ORD Airport: 74.5% on time, worst at 10 PM

ORD right now

Live conditions where a permitted source publishes them, and the historical record where none does.

No disruption reported

Aviation weather is not currently a factor.

Aviation weatherVFR

45°F · wind 6 kt

Minimal operational impact. Conditions are not a notable factor for operations right now.

Updated 08:51 UTC

Forecast issued 08:56Z.

Updated 08:56 UTC

Aircraft seen now

On the field6

Airborne within 15 NM0

Departed in the last hour5

Arrived in the last hour0

Below 10,000 ft, so aircraft overflying at cruise are not counted. These are observations, not an operational status: a count is a floor, since receiver coverage varies and a movement between two samples can be missed.

Updated 08:57 UTC

Aircraft observations from ADSB.lol (opens in a new tab) (Katia Esposito and contributing feeders), under the ODbL 1.0 (opens in a new tab). Derived data.

Parking

Daily $43/day$43.00/day

Economy F $30/day$30.00/day

Economy G $16/day$16.00/day

Economy H $16/day$16.00/day

Hourly—

International $43/day$43.00/day

This airport’s live space counts stopped updating more than 6 hours ago, so they are not shown. Published rates are unaffected.

FlyerIntel shows live values only where a permitted source provides them. Sections without data are left empty rather than estimated.

Airport reliability

Departures from ORD, July 2023 – July 2026.

Airport Reliability Score

53/ 100Fair

Better than 7% of major US airports covered by FlyerIntel (64 compared)

Calculated from 952,802 flights. How this is calculated

Departures arriving on time

74.5%

694,804 of 932,487 completed

Cancellation rate

1.85%

17,611 cancelled

Median arrival delay

-4 min

Average 11.6 min

Severe delays

9.8%

Arrived 60+ minutes late

Delay when late

75 min

Average, when 15+ min late

Departures analyzed

952,802

952,666 arrivals

Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026

What stands out

How this airport compares to others like it, not just to itself.

The airline matters unusually much at this airport, a wider carrier-to-carrier gap than 91% of 218 comparable airports.

Republic Airways arrived on time 81.0% of the time, against 59.2% for PSA Airlines, flying out of the exact same airport.

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Ranked against every other airport with the same kind of figure and at least 218 in the comparison.

Why flights are cancelled at ORD

Every cancellation carries a reason code filed by the airline that operated the flight. Departures, July 2023 – July 2026.

Extreme weather accounts for 69.9% of cancelled departures from ORD — about 1 in every 77 scheduled departures. That is 10 points higher than the 59.5% recorded across every airport FlyerIntel covers.

Share of cancellations

Weather69.9%

Air traffic16.4%

Airline13.7%

Security0.0%

Of 17,611 cancelled departures carrying a reason code.

What each reason means

Extreme weather1 in 77

Conditions the carrier judged severe enough to stop the flight: a blizzard, a hurricane, a line of thunderstorms.

12,318 cancellations, 69.9% of the total.

The air traffic system1 in 331

Airport capacity, air traffic control flow programs, heavy traffic and ordinary bad weather. A system decision, not the airline’s.

2,882 cancellations, 16.4% of the total.

The airline1 in 395

Crew, maintenance, aircraft cleaning, baggage or fueling: what BTS counts as within the carrier’s own control.

2,411 cancellations, 13.7% of the total.

Security—

A terminal evacuation, a security breach, screening equipment failure, or screening queues over 29 minutes.

0 cancellations, 0.0% of the total.

17,611 of 952,802 scheduled departures from ORD were cancelled. Ordinary bad weather is filed under air traffic, so weather’s full share is larger than its bar.

By carrier

Cancellation causes by carrier at ORD
Carrier	Cancelled	Rate	Airline	Weather	Air traffic	Security
SkyWest Airlines OO	4,969	2.55%	1%	87%	12%	0%
United Airlines UA	3,330	1.15%	36%	56%	8%	0%
American Airlines AA	3,011	1.79%	11%	80%	9%	0%
Envoy Air MQ	2,528	1.97%	3%	61%	37%	0%
Republic Airways YX	1,754	2.38%	3%	64%	33%	0%
Delta Air Lines DL	588	1.75%	48%	35%	17%	0%

Shares are of each carrier’s own coded cancellations at ORD and run across the row, so they total 100%. “Rate” is cancellations as a share of that carrier’s scheduled departures here. Two carriers on the same runways in the same weather can file very different splits, so read this as what each airline reported about itself, not as a ranking of fault. Carriers below the published minimum of coded cancellations are not listed.

Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026 · Reason codes are each airline’s own filing, not an independent finding of fault. Shown for airports with at least 500 coded cancellations; 17,611 were recorded at ORD.

Why flights run late at ORD

Where US DOT attributed the delay minutes on departures from ORD.

Late-arriving aircraft40.6%

the inbound aircraft was late, so this flight started late

The airline30.6%

crew, maintenance, boarding and fueling, all within the carrier’s control

Air traffic control20.4%

airspace and airport capacity, including weather-driven flow control

Weather8.3%

weather severe enough to stop this flight specifically

Security0.1%

screening or terminal security incidents

Share of the delay minutes US DOT attributed to each cause for departures from ORD. Only delays of 15 minutes or more are attributed.

Of the 168,395 departures from ORD that left 15 or more minutes late and have a known inbound aircraft, 58% followed a flight that landed 15 or more minutes late. The other 42% left late even though the aircraft had come in on time or early. Across the 64 covered airports that share runs from 47% to 73%, with a median of 62%; ORD’s is the 27th lowest.

The late flight is the one the same aircraft flew into ORD just before, found from the tail number in the DOT file. Airlines and hours differ from one airport to the next, so this describes the departures from ORD and does not rate the airport.

An airport is only partly the author of its own delays. Late-arriving aircraft describes the national schedule arriving here more than anything about this airfield. Air traffic control covers airspace and airport capacity, which is where a congested airport shows up; only the airline category sits squarely inside the carriers’ own operation. How differently they run it is further down this page.

Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026

What weather costs at ORD

Departures from ORD by the weather at the airport in the hour they were scheduled to leave, July 2023 – July 2026.

11.0% of scheduled departures from ORD left in an hour of bad weather. 6.5% of them were cancelled, against 1.2% in normal conditions, and 55.7% of the ones that flew arrived on time, against 77.1%. Those hours held 39% of all cancelled departures. That is about 5,600 more cancellations than the normal-conditions rate would give.

Cancellations were highest in thunderstorm hours: 18.4% of 13,445 departures, 15.5 times the normal rate.

Airlines filed 70% of ORD’s coded cancellations under extreme weather. By the weather at the airport in the scheduled hour, 39% of cancelled departures were in bad-weather hours. A code is the airline’s stated reason and an hour’s weather is what the airport reported, so the two need not match.

By weather

Scheduled departures, July 2023 – July 2026

Cancellation and on-time rates at ORD by the weather at the airport in the scheduled departure hour
Weather at the airport	Departures	Cancelled	Left on time	Arrived on time	Avg. departure delay
Normal conditionsVFR with no thunderstorm, snow or ice, fog, heavy rain or high wind	735,75877.3% of all	1.2%	77.4%	77.1%	15.0 min
Any bad weatherIFR or LIFR, or a thunderstorm, snow or ice, fog, heavy rain or high wind	104,45511.0% of all	6.5%5.5 times normal	66.2%	55.7%21.4 points below normal	30.9 min
MVFRceiling 1,000 to 3,000 feet or visibility 3 to 5 miles	130,24713.7% of all	2.5%2.1 times normal	74.9%	70.5%6.6 points below normal	18.6 min
IFRceiling 500 to 999 feet or visibility 1 to under 3 miles	42,4774.5% of all	5.8%4.9 times normal	66.5%	56.8%20.3 points below normal	29.3 min
LIFRceiling under 500 feet or visibility under 1 mile	17,4961.8% of all	9.7%8.2 times normal	67.9%	54.9%22.2 points below normal	31.1 min
Thunderstorma thunderstorm reported at the airport	13,4451.4% of all	18.4%15.5 times normal	39.3%	24.6%52.5 points below normal	76.9 min
Snow or icesnow, snow grains, ice pellets, freezing rain or freezing drizzle	27,6682.9% of all	9.3%7.8 times normal	58.5%	37.0%40.1 points below normal	38.1 min
Fogfog or freezing fog reported at the airport	4,4860.5% of all	13.3%11.2 times normal	60.7%	43.9%33.2 points below normal	44.2 min
Heavy rainheavy rain reported at the airport	5,9390.6% of all	18.0%15.1 times normal	44.9%	32.7%44.4 points below normal	66.5 min
High windwind of 25 knots or more, or gusts of 30 knots or more	27,9232.9% of all	6.2%5.2 times normal	67.3%	61.1%16.0 points below normal	29.6 min
Low ceilinga broken or overcast layer under 1,000 feet	45,8384.8% of all	5.3%4.5 times normal	71.5%	63.2%13.9 points below normal	24.0 min
Low visibilityvisibility under 3 miles	33,1103.5% of all	10.0%8.4 times normal	61.7%	46.1%31.0 points below normal	37.4 min

A departure is counted in every row its hour fits, so the rows overlap and do not add up. Left on time is a departure under 15 minutes late, and arrived on time an arrival under 15 minutes late; cancelled is the share of scheduled departures. Rows with fewer than 120 departures are not scored.

This is the weather reported at ORD in the hour a flight was scheduled to leave. It leaves out the weather at the destination and on the way, weather that arrived after the scheduled time, and anything else that goes wrong in a bad hour. An hour takes the worst conditions any report in it gave. Weather was matched to 99.9% of the airport’s scheduled departures; the rest left in hours with no report, or at a scheduled time the flight records cannot place exactly. Bad-weather hours are compared with normal hours at the same airport, not with what the same flights would have done in a clear sky: they also fall more often in some seasons and at some times of day.

Source: FlyerIntel analysis of US DOT BTS flight records and Iowa Environmental Mesonet weather reports · July 2023 – July 2026 · Where the weather comes from, and its limits. All covered airports side by side: What Weather Costs Each Airport.

Which airlines hold up in bad weather at ORD

Cancellations by airline in hours of bad weather at ORD, against the other carriers in the same months, July 2023 – July 2026.

11% of the weather-matched departures from ORD left in an hour of bad weather at the airport. 6.5% of them were cancelled. That is 5.5 times the 1.2% in normal hours, a steep climb. No one carrier holds most of them; 10 airlines have enough to compare.

Compared with the other carriers at ORD in the same months, United Airlines (3.5% cancelled against 7.4% for the others; below them in normal hours too) cancelled the fewest in bad weather and SkyWest Airlines (10.7% cancelled against 5.8% for the others; level with them in normal hours, so a bad-weather difference) the most. 5 more airlines are also clearly apart from the others.

Airlines in bad weather at ORD

Scheduled departures, July 2023 – July 2026

Cancellation rates by airline in hours of bad weather at ORD, against the other carriers in the same months and against the airline's own normal hours
Airline	Bad-weather departures	Cancelled	Other carriers	Normal hours
United Airlines	31,26930% of bad-weather	3.5%below the others	7.4%	0.8%others 1.3%
Delta Air Lines	3,3533% of bad-weather	3.5%below the others	6.2%	1.5%others 1.1%
Alaska Airlines	9711% of bad-weather	4.1%below the others	6.5%	0.9%others 1.2%
Frontier Airlines	1,0471% of bad-weather	6.0%	7.5%	2.5%others 1.2%
American Airlines	17,78917% of bad-weather	5.4%below the others	6.7%	1.3%others 1.2%
Southwest Airlines	2,0552% of bad-weather	4.2%	5.1%	0.9%others 1.0%
Spirit Airlines	2,3782% of bad-weather	4.8%	5.5%	1.9%others 1.0%
Republic Airways	9,4719% of bad-weather	8.1%above the others	6.5%	1.4%others 1.2%
Envoy Air	14,22814% of bad-weather	8.6%above the others	6.9%	1.0%others 1.3%
SkyWest Airlines	21,04420% of bad-weather	10.7%above the others	5.8%	1.4%others 1.2%

Best first. The other carriers’ column applies their rate in each month to the airline’s own departures, so a stormy month is not held against it; the normal-hours column gives the same pair outside bad weather.

The 10 listed airlines flew 99% of the bad-weather departures at ORD; a carrier under 500 is not listed. The comparison does not hold the hour of the day, the destination or the aircraft fixed, and a gap counts as clear only at 2 standard errors and 0.3 points. Republic Airways, Envoy Air and SkyWest Airlines fly for mainline airlines and are counted as carriers of their own here, though they share the airport’s gates, its de-icing and often its decisions to cancel.

Source: FlyerIntel analysis of US DOT BTS flight records and Iowa Environmental Mesonet weather reports · July 2023 – July 2026 · Where the weather comes from, and its limits. All covered airports side by side: What Weather Costs Each Airport.

Turning aircraft around at ORD

Time on the ground between one flight and the next of the same aircraft at ORD, and what a late arrival does to the next departure, July 2023 – July 2026.

The median turn at ORD is scheduled for 66 minutes on the ground and takes 72 minutes, against 56 minutes and 63 minutes across all airports. Aircraft are given longer on the ground here than at the typical airport. The 6 minutes by which the typical turn runs over its schedule are about what it is across all airports. 21.0% of turns here began with an aircraft that landed 15 or more minutes late, above the 18.9% for all airports.

When the aircraft landed 15 or more minutes late (154,818 turns here, 64 minutes late on average), 80% of the turns were finished in no more than the scheduled ground time, against 68% across all airports. 60% of those flights left 15 or more minutes late, against 72%. After an aircraft that landed on time, 11% did (all airports 11%).

Given the turn lengths scheduled here, the network’s rates would give 74% finished in the schedule and 65% leaving late. ORD does better on both counts: more late turns are finished in the schedule and fewer late aircraft become late departures, so the turn recovers lateness here beyond what the schedule explains. 41% of its late-inbound turns had a scheduled turn of 60 to 89 minutes, against 29% across all airports.

Turns at ORD against all airports

736,622 turns, July 2023 – July 2026

Aircraft turns at ORD against all airports: scheduled and actual time on the ground and what a late inbound aircraft does
Measure	ORD	All airports	All airports, same turn lengths
Median scheduled turn	66 min	56 min	—
Median actual turn	72 min	63 min	—
Turns that began with an aircraft 15+ minutes late	21%	19%	—
Late turns finished within the schedule	80%	68%	74%
Late inbound that left 15+ minutes late	60%	72%	65%
On-time inbound that left 15+ minutes late	11%	11%	—

The last column is the network’s rate at the turn lengths scheduled at ORD, band by band from under 30 minutes to 3 to 6 hours. A turn finishes within the schedule when the aircraft spent no more time on the ground than the schedule gave it.

A turn pairs an aircraft’s landing at ORD with its next departure from it by tail number; the aircraft is never named. These 736,622 turns are 77% of the flights that left ORD in the period; the rest are an aircraft’s first flight after a long stay, flights without a usable inbound, and cancelled flights. Ground time runs from the gate. Turns under 30 minutes are kept, but most leave late even after an on-time landing. Airlines set their own turn schedules, so this describes the airlines that fly at ORD and does not rate the airport.

Source: FlyerIntel analysis of US DOT BTS flight records · July 2023 – July 2026 · Airports side by side: Where a Late Aircraft Gets Its Time Back.

What sets ORD apart

Where ORD’s hours, months, airlines and taxi time differ most from the other airports, July 2023 – July 2026.

10 PM is where ORD falls furthest behind the rest: 62.4% of its 10 PM departures arrive on time, 9.7 points below the 72.1% for that hour elsewhere.

January is ORD’s hardest month against the field, 71.3% on time to 79.1% elsewhere, 7.8 points short.

PSA Airlines’ departures from ORD arrive on time 59.2% of the time, 16.7 points worse than the 75.9% the same airline manages at its other airports.

Departing aircraft spend 25.5 minutes on average between pushback and takeoff at ORD, 7.2 minutes more than the 18.3 minutes at the other airports.

ORD against the other airports

July 2023 – July 2026

Where ORD differs most from the other covered airports, with the flights behind each figure
Measure	ORD	Elsewhere	Gap	Flights behind it
Hour: 10 PM departures	62.4%	72.1%	−9.7 pts	10,943 here, 468,857 elsewhere
Month: January	71.3%	79.1%	−7.8 pts	64,143 here, 1,225,648 elsewhere
Airline: PSA Airlines	59.2%	75.9%	−16.7 pts	3,376 here, 687,667 elsewhere
Taxi-out: Departures	25.5 min	18.3 min	+7.2 min	936,029 here, 16,694,080 elsewhere

"Elsewhere" is every other covered airport together, taken from the same aggregates as this page with ORD’s own flights removed (for airlines, that airline’s flights from all its other airports). Hours, months and airlines appear only where both sides have at least 120 completed flights (airlines 500) and the gap is at least 2 points and 2 standard errors; only the largest gap in each direction is shown. The taxi figure is weighted by departures and has no error estimate, so it appears from 2 minutes.

Best time to fly from ORD

On-time arrival rate by scheduled local departure time: each weekday and hour, and averaged over the week.

Flights departing 5–9 AM arrived on time 84.4% of the time, against 66.0% for 6–9 PM departures — a gap of 18.4 percentage points.

By day and hour

On-time arrival rate for each weekday and scheduled departure hour, in local time.

Wednesday 5–6 AM was the most reliable slot at ORD (91.2% on time, 1,247 flights) and Sunday 10–11 PM the least (59.8%, 1,945 flights).

Hour of departure matters more than day of the week: hourly averages sit a typical 7.1 points from the airport-wide rate, weekday averages 2.1 points.

On-time arrival rate at ORD by weekday and scheduled departure hour, local time. Each button reads out one slot.
Hour	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
5 AM–6 AM
6 AM–7 AM
7 AM–8 AM
8 AM–9 AM
9 AM–10 AM
10 AM–11 AM
11 AM–12 PM
12 PM–1 PM
1 PM–2 PM
2 PM–3 PM
3 PM–4 PM
4 PM–5 PM
5 PM–6 PM
6 PM–7 PM
7 PM–8 PM
8 PM–9 PM
9 PM–10 PM
10 PM–11 PM
11 PM–12 AM

On-time rate, % · stronger color, fewer on time

60–64
65–69
70–74
75–79
80–84
85–89
90–94

Most reliable slot
Least reliable slot

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · On time is arrival within 15 minutes of schedule. Cells round to whole percentages; the table shows one decimal.

Best and worst slots are named only among slots with 500+ flights, and only when the gap is larger than sampling error. Departures before 5 AM (444 flights) are not drawn: no slot in those hours has enough flights to score.

View as tableHide table

On-time arrival rate (%) with flights beneath, by scheduled departure hour and weekday at ORD. A dash means fewer than 120 flights, which are not scored.
Hour	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
5 AM–6 AM	88.1% on time1,396 flights	89.0% on time1,260 flights	91.2% on time1,247 flights	90.2% on time1,397 flights	87.9% on time1,413 flights	86.7% on time1,321 flights	88.0% on time1,428 flights
6 AM–7 AM	86.0% on time4,458 flights	88.5% on time3,928 flights	89.3% on time3,936 flights	88.5% on time4,440 flights	85.7% on time4,457 flights	88.2% on time3,534 flights	85.5% on time4,166 flights
7 AM–8 AM	86.0% on time10,210 flights	88.6% on time8,993 flights	89.3% on time9,125 flights	86.9% on time10,176 flights	84.4% on time10,144 flights	85.9% on time8,931 flights	85.5% on time9,900 flights
8 AM–9 AM	81.4% on time12,277 flights	84.1% on time11,510 flights	83.3% on time11,884 flights	82.6% on time12,121 flights	77.8% on time12,334 flights	80.6% on time11,232 flights	79.0% on time12,126 flights
9 AM–10 AM	80.4% on time10,032 flights	84.3% on time9,828 flights	82.3% on time9,879 flights	81.5% on time10,090 flights	75.9% on time9,967 flights	79.0% on time9,005 flights	77.9% on time9,760 flights
10 AM–11 AM	79.3% on time10,580 flights	82.5% on time10,416 flights	80.7% on time10,388 flights	80.7% on time10,448 flights	76.0% on time10,505 flights	78.9% on time9,799 flights	75.7% on time10,305 flights
11 AM–12 PM	75.7% on time6,310 flights	80.3% on time6,000 flights	78.2% on time6,104 flights	78.1% on time6,305 flights	73.8% on time6,311 flights	77.6% on time6,017 flights	73.9% on time6,229 flights
12 PM–1 PM	76.6% on time6,697 flights	80.1% on time6,389 flights	78.5% on time6,435 flights	78.1% on time6,699 flights	73.6% on time6,730 flights	78.8% on time5,830 flights	75.2% on time6,569 flights
1 PM–2 PM	76.2% on time9,535 flights	79.4% on time8,815 flights	78.3% on time9,061 flights	76.6% on time9,513 flights	73.7% on time9,484 flights	78.9% on time8,234 flights	73.3% on time9,366 flights
2 PM–3 PM	74.1% on time9,764 flights	76.7% on time9,237 flights	74.9% on time9,364 flights	74.8% on time9,782 flights	70.5% on time9,816 flights	77.8% on time8,637 flights	70.1% on time9,582 flights
3 PM–4 PM	71.3% on time7,416 flights	75.0% on time6,919 flights	72.0% on time7,039 flights	70.4% on time7,339 flights	69.9% on time7,418 flights	74.5% on time6,290 flights	68.0% on time7,257 flights
4 PM–5 PM	67.4% on time7,326 flights	71.3% on time6,648 flights	69.1% on time6,823 flights	67.6% on time7,295 flights	67.1% on time7,343 flights	71.8% on time6,424 flights	64.7% on time7,279 flights
5 PM–6 PM	66.4% on time6,686 flights	69.5% on time6,505 flights	68.3% on time6,567 flights	65.8% on time6,477 flights	65.4% on time6,628 flights	70.2% on time6,179 flights	64.1% on time6,550 flights
6 PM–7 PM	67.5% on time11,889 flights	69.2% on time11,574 flights	66.3% on time11,696 flights	64.1% on time11,671 flights	65.1% on time11,792 flights	71.7% on time10,944 flights	65.4% on time11,776 flights
7 PM–8 PM	66.8% on time9,102 flights	69.9% on time8,518 flights	66.9% on time8,605 flights	63.8% on time8,967 flights	63.4% on time9,199 flights	69.5% on time7,987 flights	63.0% on time9,174 flights
8 PM–9 PM	65.4% on time9,787 flights	69.6% on time8,605 flights	65.7% on time9,100 flights	60.2% on time9,709 flights	60.7% on time10,097 flights	69.7% on time8,789 flights	62.7% on time10,095 flights
9 PM–10 PM	67.1% on time5,430 flights	72.1% on time4,748 flights	68.5% on time4,964 flights	63.8% on time5,562 flights	64.8% on time5,661 flights	71.1% on time4,656 flights	66.8% on time5,752 flights
10 PM–11 PM	61.2% on time1,939 flights	68.3% on time1,361 flights	63.6% on time1,329 flights	60.0% on time1,880 flights	60.0% on time1,789 flights	67.2% on time1,448 flights	59.8% on time1,945 flights
11 PM–12 AM	80.3% on time135 flights	83.6% on time152 flights	66.7% on time147 flights	70.1% on time177 flights	66.5% on time170 flights	73.5% on time182 flights	68.2% on time286 flights

By departure window

All days combined

5–9 AM84.4%

9 AM–12 PM79.0%

12–3 PM75.8%

3–6 PM69.0%

6–9 PM66.0%

9 PM–5 AM66.5%

By departure hour

All days combined

12 AM

3 AM

6 AM

9 AM

12 PM

3 PM

6 PM

9 PM

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Buckets with fewer than 120 flights are not scored.

What parking will cost

Estimated from ORD's own published rates.

Where you would park

Arriving

Returning

Estimated cost

Choose a facility and both dates to see an estimate.

Rates as published by the airport, last read 2026-10-18. Confirm before you travel.

Source: Chicago O'Hare International Airport · An estimate from published standard rates. Airports vary surcharges, oversize vehicle fees and event pricing, so confirm the price with the airport before you travel.

International arrivals

How long passport control normally takes here, hour by hour and hall by hall. This is the arrivals queue, not departure security — and it is history, not a live wait.

A US passport clears Terminal 5, ORD’s busiest hall, in a typical 12 min; everyone else in the same terminal typically takes 18 min, and 40 min on a busy day. These are separate halls, separately staffed — CBP’s single combined figure of 15 min is a number few arrivals actually experience.

Terminal by terminal, across the day

Terminal by terminal, across the day
Terminal	US passports	US busy day	Other passports	Other busy day	Global Entry
Terminal 5	12 min	23 min	18 min	40 min	14.1% of arrivals

US passports — Terminal 5

12 AM

3 AM

6 AM

9 AM

12 PM

3 PM

6 PM

9 PM

US citizens and lawful permanent residents, who use the US-passport lanes.

All other passports — Terminal 5

12 AM

3 AM

6 AM

9 AM

12 PM

3 PM

6 PM

9 PM

Every other arriving passenger, including visa and visa-waiver travelers.

Hour by hour — Terminal 5

Hour by hour — Terminal 5
Cleared in hour	US passports	US busy day	Other passports	Other busy day	Booths open
12 AM–1 AM	12 min	26 min	21 min	43 min	8
1 AM–2 AM	10 min	18 min	13 min	31 min	7
2 AM–3 AM	9 min	16 min	12 min	21 min	7
3 AM–4 AM	9 min	17 min	14 min	24 min	7
4 AM–5 AM	10 min	18 min	14 min	27 min	7
5 AM–6 AM	10 min	20 min	17 min	34 min	8
6 AM–7 AM	9 min	22 min	24 min	44 min	14
7 AM–8 AM	13 min	28 min	20 min	40 min	14
8 AM–9 AM	9 min	23 min	15 min	36 min	14
9 AM–10 AM	15 min	26 min	23 min	42 min	15
10 AM–11 AM	10 min	22 min	17 min	42 min	14
11 AM–12 PM	11 min	19 min	19 min	42 min	18
12 PM–1 PM	11 min	18 min	18 min	35 min	22
1 PM–2 PM	12 min	20 min	18 min	38 min	26
2 PM–3 PM	15 min	32 min	27 min	55 min	28
3 PM–4 PM	17 min	33 min	34 min	66 min	27
4 PM–5 PM	14 min	26 min	24 min	57 min	24
5 PM–6 PM	14 min	20 min	16 min	33 min	22
6 PM–7 PM	15 min	24 min	17 min	33 min	22
7 PM–8 PM	13 min	23 min	15 min	29 min	19
8 PM–9 PM	10 min	20 min	14 min	32 min	14
9 PM–10 PM	10 min	18 min	15 min	29 min	11
10 PM–11 PM	10 min	16 min	13 min	23 min	11
11 PM–12 AM	12 min	23 min	17 min	32 min	9

US passports: clearing in the 3 PM–4 PM hour typically takes 17 min, against 9 min in the 2 AM–3 AM hour — 8 min between the slowest and fastest of 24 measured hours.

All other passports: clearing in the 3 PM–4 PM hour typically takes 34 min, against 12 min in the 2 AM–3 AM hour — 23 min between the slowest and fastest of 24 measured hours.

The hour is when CBP processed the passenger, not when the aircraft landed — allow for the walk from the gate. Hours with fewer than 120 days of records are not listed rather than shown as an estimate, which is why a terminal’s quietest hours are usually absent. “Busy day” is the 90th percentile: one arrival in ten is worse than that. Booths are how many CBP had open, and they follow the queue rather than prevent it — the busiest hours are staffed hardest and are still the slowest.

Source: US Customs and Border Protection · 2024-08-28 to 2026-10-16 · These are CBP passport control waits for arriving international passengers — a different queue from TSA departure screening. CBP publishes them about two days in arrears, so every figure here describes what has been typical over 2024-08-28 to 2026-10-16, and none of it is a live queue or a forecast for your flight. US and non-US passengers are reported separately by CBP and are kept separate here, because they are separate halls. FlyerIntel publishes a terminal or an hour only where CBP filed at least 120 hourly records for it, and an hour-by-hour breakdown only where at least 6 hours clear that floor.

What to expect at ORD

How busy the airport is through the day, from scheduled departure volume.

Departures a day

845

Average across the analysis period

Busiest hour

8 AM

About 74 departures

Typical taxi-out

25.5 min

Pushback to wheels-up, on departure

Typical taxi-in

17.8 min

Touchdown to gate, on arrival

Scheduled departures by hour

12 AM

3 AM

6 AM

9 AM

12 PM

3 PM

6 PM

9 PM

The busiest hour is 8 AM, with about 74 departures a day, against roughly 26 at 6 AM. That peak is also more punctual than a typical hour here: early banks fly aircraft that spent the night on the ground rather than ones inheriting the day’s delays.

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Taxi-out runs from gate to wheels-up, averaged over departures and weighted by hour. Taxi-in runs from touchdown to gate.

Weekly and seasonal patterns

By day of week

Mon74.4%

Tue77.7%

Wed75.8%

Thu74.1%

Fri71.7%

Sat76.5%

Sun71.9%

Tuesday is historically the most reliable day and Friday the least, a gap of 6.0 percentage points.

By month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

July is historically the weakest month and October the strongest, a spread of 13.4 percentage points.

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026

Airlines at ORD

Departure performance by operating carrier. Regional flights are reported by the carrier that operated them, not by the mainline brand.

Airlines at ORD
Carrier	Departures	On time	Cancelled	Median delay
United Airlines UA	288,979	76.7%	1.15%	-5 min
SkyWest Airlines OO	195,045	71.1%	2.55%	-2 min
American Airlines AA	168,332	70.9%	1.79%	-3 min
Envoy Air MQ	128,110	76.7%	1.97%	-5 min
Republic Airways YX	73,631	81.0%	2.38%	-9 min
Delta Air Lines DL	33,506	77.4%	1.75%	-8 min
Spirit Airlines NK	20,572	71.2%	2.18%	-5 min
Southwest Airlines WN	18,221	76.5%	1.26%	-5 min
Alaska Airlines AS	9,839	71.3%	1.26%	-2 min
Frontier Airlines F9	9,285	64.8%	3.08%	1 min
PSA Airlines OH	3,619	59.2%	6.60%	4 min
JetBlue B6	3,564	74.3%	2.89%	-8 min

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Carriers with fewer than 500 departures are not listed.

Routes from ORD

Ranked by FlyerIntel Route Reliability Score.

Most reliable

LASLas Vegas63 PHXPhoenix63 IAHHouston61 SEASeattle61 DENDenver61 MIAMiami61 LAXLos Angeles61 INDIndianapolis59

Least reliable

MKEMilwaukee32 EWRNewark38 LGANew York41 PHLPhiladelphia43 DCAWashington46 BOSBoston46 DFWDallas–Fort Worth48 CLECleveland51

Busiest routes

Busiest routes from ORD
Destination	Flights	On time	Score
ORD → LGA New York	33,926	73.4%	41
ORD → BOS Boston	21,895	72.4%	46
ORD → LAX Los Angeles	21,173	76.4%	61
ORD → DFW Dallas–Fort Worth	20,459	73.0%	48
ORD → DCA Washington	20,159	73.0%	46
ORD → DEN Denver	19,502	77.0%	61
ORD → ATL Atlanta	18,588	75.6%	55
ORD → EWR Newark	18,463	71.7%	38
ORD → MSP Minneapolis	18,310	73.3%	53
ORD → PHX Phoenix	17,873	77.8%	63
ORD → DTW Detroit	17,424	76.7%	54
ORD → MCO Orlando	17,133	75.3%	56

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Only routes with at least 10,000 flights are ranked.

See all 54 routes to and from ORD →

Reliability over time

On-time arrival rate for departures, by month.

24

25

26

Over the most recent 12 months (2025-08 to 2026-07), departures from ORD arrived on time 71.5% of the time, against 76.4% in the 12 months before — declining by 4.9 percentage points.

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026

Data and sources

Historical statistics

Every historical figure on this page is calculated by FlyerIntel from US DOT Bureau of Transportation Statistics on-time performance records covering July 2023 – July 2026, comprising 952,802 departures from ORD. A flight counts as delayed when it arrives 15 or more minutes after schedule.

Full methodology · All data sources

Analysis last recomputed September 26, 2026

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Chicago O'Hare International Airport on-time performance, from FlyerIntel

Updates on its own as new data comes in — paste this once, nothing to maintain.

<a href="https://flyerintel.com/airports/ord/"><img src="https://flyerintel.com/badge/airport/ord/" alt="Chicago O'Hare International Airport on-time performance, from FlyerIntel"></a>

Live conditions

Aviation weather comes from the NOAA Aviation Weather Center. Operational events come from the FAA where available. FlyerIntel shows the age of every live value and does not display data it cannot currently retrieve.

See something wrong? Report it

Latest observation for ORD: METAR KORD 180851Z 20006KT 10SM CLR 07/01 A3041 RMK AO2 SLP301 T00720011 55000 $ (issued 08:51 UTC).