Columbus, OH · Airport profile
CMH
John Glenn Columbus International Airport
82.1% of departures from CMH arrived on time across 134,005 flights, July 2023 – July 2026. The weakest hour is 9 PM, at 68.3%. Late-arriving aircraft accounts for the most delay minutes.
CMH right now
Live conditions where a permitted source publishes them, and the historical record where none does.
Aviation weather is not currently a factor.
93.9% leave on time
05:00–05:59 local · 6,029 departures on record
When flights run late in this hour, most of the delay is attributed to the airline.
Historical pattern for CMH from US DOT BTS — not a live reading.
Minimal operational impact. Conditions are not a notable factor for operations right now.
UpdatedForecast issued 05:28Z.
UpdatedBelow 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.
UpdatedAircraft 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.
FlyerIntel shows live values only where a permitted source provides them. Sections without data are left empty rather than estimated.
Airport reliability
Departures from CMH, July 2023 – July 2026.
Better than 68% of major US airports covered by FlyerIntel (64 compared)
Calculated from 134,005 flights. How this is calculated
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
Why flights are cancelled at CMH
Every cancellation carries a reason code filed by the airline that operated the flight. Departures, July 2023 – July 2026.
Extreme weather accounts for 56.5% of cancelled departures from CMH — about 1 in every 112 scheduled departures. That is close to the split across every airport FlyerIntel covers.
Share of cancellations
Of 2,123 cancelled departures carrying a reason code.
What each reason means
Conditions the carrier judged severe enough to stop the flight: a blizzard, a hurricane, a line of thunderstorms.
1,200 cancellations, 56.5% of the total.
Crew, maintenance, aircraft cleaning, baggage or fueling: what BTS counts as within the carrier’s own control.
490 cancellations, 23.1% of the total.
Airport capacity, air traffic control flow programs, heavy traffic and ordinary bad weather. A system decision, not the airline’s.
433 cancellations, 20.4% of the total.
A terminal evacuation, a security breach, screening equipment failure, or screening queues over 29 minutes.
0 cancellations, 0.0% of the total.
2,123 of 134,005 scheduled departures from CMH were cancelled. Ordinary bad weather is filed under air traffic, so weather’s full share is larger than its bar.
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; 2,123 were recorded at CMH.
Why flights run late at CMH
Where US DOT attributed the delay minutes on departures from CMH.
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for departures from CMH. Only delays of 15 minutes or more are attributed.
Of the 20,752 departures from CMH that left 15 or more minutes late and have a known inbound aircraft, 62% followed a flight that landed 15 or more minutes late. The other 38% 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%; CMH’s is the 32nd highest.
The late flight is the one the same aircraft flew into CMH 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 CMH 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 CMH
Departures from CMH by the weather at the airport in the hour they were scheduled to leave, July 2023 – July 2026.
10.7% of scheduled departures from CMH left in an hour of bad weather. 3.5% of them were cancelled, against 1.3% in normal conditions, and 72.6% of the ones that flew arrived on time, against 83.3%. Those hours held 23% of all cancelled departures. That is about 305 more cancellations than the normal-conditions rate would give.
Cancellations were highest in fog hours: 14.1% of 743 departures, 10.6 times the normal rate.
Airlines filed 57% of CMH’s coded cancellations under extreme weather. By the weather at the airport in the scheduled hour, 23% 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| 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 | 101,25075.6% of all | 1.3% | 83.3% | 83.3% | 9.3 min |
| Any bad weatherIFR or LIFR, or a thunderstorm, snow or ice, fog, heavy rain or high wind | 14,26810.7% of all | 3.5%2.6 times normal | 77.8% | 72.6%10.7 points below normal | 15.7 min |
| MVFRceiling 1,000 to 3,000 feet or visibility 3 to 5 miles | 21,14815.8% of all | 1.9% | 81.6% | 80.1%3.2 points below normal | 11.1 min |
| IFRceiling 500 to 999 feet or visibility 1 to under 3 miles | 7,1185.3% of all | 2.1%1.6 times normal | 82.4% | 77.9%5.4 points below normal | 11.1 min |
| LIFRceiling under 500 feet or visibility under 1 mile | 2,0281.5% of all | 7.2%5.4 times normal | 79.8% | 75.0%8.3 points below normal | 16.4 min |
| Thunderstorma thunderstorm reported at the airport | 1,2440.9% of all | 4.3%3.3 times normal | 50.6% | 50.6%32.7 points below normal | 43.0 min |
| Snow or icesnow, snow grains, ice pellets, freezing rain or freezing drizzle | 4,2403.2% of all | 7.3%5.5 times normal | 74.3% | 58.2%25.1 points below normal | 18.9 min |
| Fogfog or freezing fog reported at the airport | 7430.6% of all | 14.1%10.6 times normal | 76.2% | 68.6%14.7 points below normal | 30.0 min |
| Heavy rainheavy rain reported at the airport | 9360.7% of all | 2.5%1.8 times normal | 66.1% | 65.7%17.6 points below normal | 28.5 min |
| High windwind of 25 knots or more, or gusts of 30 knots or more | 1,7951.3% of all | 3.5%2.6 times normal | 67.8% | 64.9%18.4 points below normal | 28.3 min |
| Low ceilinga broken or overcast layer under 1,000 feet | 6,8745.1% of all | 2.0% | 84.9% | 82.2%1.1 points below normal | 9.5 min |
| Low visibilityvisibility under 3 miles | 4,8083.6% of all | 5.1%3.8 times normal | 77.6% | 70.1%13.2 points below normal | 17.2 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 CMH 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 100.0% 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 CMH
Cancellations by airline in hours of bad weather at CMH, against the other carriers in the same months, July 2023 – July 2026.
11% of the weather-matched departures from CMH left in an hour of bad weather at the airport. 3.5% of them were cancelled. That is 2.6 times the 1.3% in normal hours. No one carrier holds most of them; 7 airlines have enough to compare.
Compared with the other carriers at CMH in the same months, Envoy Air (1.7% cancelled against 3.6% for the others; below them in normal hours too) cancelled the fewest in bad weather and Republic Airways (5.3% cancelled against 3.2% for the others; above them in normal hours too) the most. 3 more airlines are also clearly apart from the others.
Airlines in bad weather at CMH
Scheduled departures, July 2023 – July 2026| Airline | Bad-weather departures | Cancelled | Other carriers | Normal hours |
|---|---|---|---|---|
| Envoy Air | 1,1638% of bad-weather | 1.7%below the others | 3.6% | 0.7%others 1.3% |
| United Airlines | 9367% of bad-weather | 1.6%below the others | 3.4% | 1.1%others 1.3% |
| Southwest Airlines | 4,01528% of bad-weather | 2.7%below the others | 4.0% | 0.6%others 1.6% |
| Delta Air Lines | 1,0978% of bad-weather | 2.4%below the others | 3.6% | 0.9%others 1.4% |
| Spirit Airlines | 5914% of bad-weather | 3.5% | 3.1% | 2.0%others 1.2% |
| American Airlines | 1,2369% of bad-weather | 4.3% | 3.6% | 1.7%others 1.3% |
| Republic Airways | 4,12529% of bad-weather | 5.3%above the others | 3.2% | 2.0%others 1.1% |
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 7 listed airlines flew 92% of the bad-weather departures at CMH; 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. Envoy Air and Republic Airways 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 CMH
Time on the ground between one flight and the next of the same aircraft at CMH, and what a late arrival does to the next departure, July 2023 – July 2026.
The median turn at CMH is scheduled for 45 minutes on the ground and takes 53 minutes, against 56 minutes and 63 minutes across all airports. Aircraft are given less time on the ground here than at the typical airport. The 8 minutes by which the typical turn runs over its schedule are about what it is across all airports.
When the aircraft landed 15 or more minutes late (15,492 turns here, 56 minutes late on average), 65% of the turns were finished in no more than the scheduled ground time, against 68% across all airports. 76% of those flights left 15 or more minutes late, against 72%. After an aircraft that landed on time, 9% did (all airports 11%).
Given the turn lengths scheduled here, the network’s rates would give 61% finished in the schedule and 78% leaving late. CMH finishes more late turns in the schedule than the network would, but lateness is passed on about as often. 40% of its late-inbound turns had a scheduled turn of 30 to 44 minutes, against 20% across all airports.
Turns at CMH against all airports
84,850 turns, July 2023 – July 2026| Measure | CMH | All airports | All airports, same turn lengths |
|---|---|---|---|
| Median scheduled turn | 45 min | 56 min | — |
| Median actual turn | 53 min | 63 min | — |
| Turns that began with an aircraft 15+ minutes late | 18% | 19% | — |
| Late turns finished within the schedule | 65% | 68% | 61% |
| Late inbound that left 15+ minutes late | 76% | 72% | 78% |
| On-time inbound that left 15+ minutes late | 9% | 11% | — |
The last column is the network’s rate at the turn lengths scheduled at CMH, 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 CMH with its next departure from it by tail number; the aircraft is never named. These 84,850 turns are 63% of the flights that left CMH 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 CMH 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 CMH apart
Where CMH’s hours, months, airlines and taxi time differ most from the other airports, July 2023 – July 2026.
Flights scheduled to leave CMH at 11 AM arrive on time 87.0% of the time, 5.8 points better than the 81.2% for that hour at the other airports.
9 PM is where CMH falls furthest behind the rest: 68.3% of its 9 PM departures arrive on time, 2.9 points below the 71.2% for that hour elsewhere.
July treats CMH better than it treats the rest of the country: 76.8% on time against 70.1% elsewhere, 6.7 points ahead.
Delta Air Lines does better out of CMH than anywhere else it flies: 87.8% on time here, 82.0% on its other departures, 5.8 points apart.
United Airlines’ departures from CMH arrive on time 75.3% of the time, 4.5 points worse than the 79.8% the same airline manages at its other airports.
Taxi-out at CMH averages 15.2 minutes, 3.5 minutes less than the 18.7 minutes elsewhere.
CMH against the other airports
July 2023 – July 2026| Measure | CMH | Elsewhere | Gap | Flights behind it |
|---|---|---|---|---|
| Hour: 11 AM departures | 87.0% | 81.2% | +5.8 pts | 8,765 here, 1,075,807 elsewhere |
| Hour: 9 PM departures | 68.3% | 71.2% | −2.9 pts | 1,484 here, 682,827 elsewhere |
| Month: July | 76.8% | 70.1% | +6.7 pts | 14,895 here, 1,971,588 elsewhere |
| Airline: Delta Air Lines | 87.8% | 82.0% | +5.8 pts | 10,601 here, 3,091,524 elsewhere |
| Airline: United Airlines | 75.3% | 79.8% | −4.5 pts | 8,959 here, 2,373,611 elsewhere |
| Taxi-out: Departures | 15.2 min | 18.7 min | −3.5 min | 131,955 here, 17,498,154 elsewhere |
"Elsewhere" is every other covered airport together, taken from the same aggregates as this page with CMH’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 CMH
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 89.6% of the time, against 68.8% for 9 PM–5 AM departures — a gap of 20.8 percentage points.
By day and hour
On-time arrival rate for each weekday and scheduled departure hour, in local time.
Friday 5–6 AM was the most reliable slot at CMH (95.2% on time, 1,001 flights) and Sunday 8–9 PM the least (61.7%, 750 flights).
Hour of departure matters more than day of the week: hourly averages sit a typical 7.9 points from the airport-wide rate, weekday averages 1.9 points.
| Hour | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday |
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| 9 PM–10 PM |
On-time rate, % · stronger color, fewer on time
- 60–69
- 70–79
- 80–89
- 90–99
- Fewer than 120 flights, not scored
- 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 after 10 PM (107 flights) are not drawn: no slot in those hours has enough flights to score.
View as tableHide table
| Hour | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday |
|---|---|---|---|---|---|---|---|
| 5 AM–6 AM | 92.7% on time994 flights | 90.7% on time676 flights | 93.2% on time675 flights | 92.7% on time980 flights | 95.2% on time1,001 flights | 92.5% on time836 flights | 93.2% on time867 flights |
| 6 AM–7 AM | 89.4% on time2,717 flights | 91.9% on time2,669 flights | 93.4% on time2,678 flights | 91.6% on time2,705 flights | 90.3% on time2,722 flights | 89.7% on time2,340 flights | 92.7% on time2,490 flights |
| 7 AM–8 AM | 85.3% on time1,872 flights | 87.4% on time1,873 flights | 90.0% on time1,913 flights | 88.7% on time1,850 flights | 85.5% on time1,849 flights | 85.4% on time1,827 flights | 87.7% on time1,803 flights |
| 8 AM–9 AM | 84.5% on time1,254 flights | 88.7% on time1,278 flights | 89.1% on time1,330 flights | 88.3% on time1,237 flights | 86.3% on time1,245 flights | 87.2% on time1,336 flights | 88.2% on time1,326 flights |
| 9 AM–10 AM | 88.3% on time724 flights | 91.8% on time782 flights | 90.3% on time771 flights | 91.5% on time738 flights | 89.5% on time729 flights | 86.4% on time753 flights | 88.4% on time752 flights |
| 10 AM–11 AM | 84.8% on time1,188 flights | 89.3% on time1,069 flights | 90.0% on time1,076 flights | 89.1% on time1,183 flights | 87.7% on time1,182 flights | 89.2% on time803 flights | 88.0% on time1,110 flights |
| 11 AM–12 PM | 85.3% on time1,320 flights | 89.4% on time1,340 flights | 89.6% on time1,368 flights | 85.1% on time1,295 flights | 87.0% on time1,320 flights | 89.1% on time966 flights | 83.6% on time1,289 flights |
| 12 PM–1 PM | 77.8% on time1,106 flights | 84.6% on time998 flights | 87.2% on time974 flights | 80.9% on time1,080 flights | 80.9% on time1,093 flights | 82.7% on time1,101 flights | 79.8% on time1,096 flights |
| 1 PM–2 PM | 82.2% on time832 flights | 85.7% on time805 flights | 86.2% on time840 flights | 80.9% on time829 flights | 78.4% on time845 flights | 83.5% on time694 flights | 81.2% on time857 flights |
| 2 PM–3 PM | 78.3% on time1,109 flights | 81.8% on time1,071 flights | 80.6% on time1,080 flights | 76.4% on time1,093 flights | 75.0% on time1,103 flights | 78.5% on time887 flights | 74.5% on time1,097 flights |
| 3 PM–4 PM | 75.0% on time1,144 flights | 76.8% on time1,052 flights | 78.0% on time1,052 flights | 74.3% on time1,145 flights | 72.6% on time1,176 flights | 77.8% on time1,111 flights | 69.9% on time1,131 flights |
| 4 PM–5 PM | 74.1% on time1,035 flights | 80.5% on time1,008 flights | 76.4% on time1,020 flights | 70.6% on time1,016 flights | 69.6% on time1,052 flights | 73.2% on time1,031 flights | 68.6% on time1,019 flights |
| 5 PM–6 PM | 72.4% on time1,357 flights | 76.0% on time1,233 flights | 72.0% on time1,254 flights | 68.3% on time1,362 flights | 71.5% on time1,355 flights | 74.1% on time1,092 flights | 67.7% on time1,357 flights |
| 6 PM–7 PM | 73.9% on time1,458 flights | 78.4% on time1,373 flights | 75.4% on time1,381 flights | 67.6% on time1,424 flights | 70.4% on time1,444 flights | 72.9% on time1,073 flights | 66.7% on time1,515 flights |
| 7 PM–8 PM | 70.4% on time906 flights | 76.5% on time830 flights | 73.0% on time861 flights | 69.8% on time941 flights | 71.3% on time917 flights | 68.5% on time609 flights | 66.2% on time990 flights |
| 8 PM–9 PM | 73.2% on time714 flights | 74.8% on time414 flights | 77.3% on time406 flights | 67.0% on time694 flights | 70.2% on time709 flights | 67.6% on time284 flights | 61.7% on time750 flights |
| 9 PM–10 PM | 68.1% on time250 flights | 111 flights, too few to score | 85 flights, too few to score | 70.0% on time256 flights | 66.7% on time267 flights | 73.0% on time151 flights | 64.4% on time392 flights |
By departure window
All days combinedBy departure hour
All days combined- 12 AM to 4 AM: too few flights to score
- 5 AM: 93.0% on time from 6,029 flights
- 6 AM: 91.3% on time from 18,321 flights
- 7 AM: 87.1% on time from 12,987 flights
- 8 AM: 87.5% on time from 9,006 flights
- 9 AM: 89.5% on time from 5,249 flights
- 10 AM: 88.2% on time from 7,611 flights
- 11 AM: 87.0% on time from 8,898 flights
- 12 PM: 81.9% on time from 7,448 flights
- 1 PM: 82.6% on time from 5,702 flights
- 2 PM: 77.8% on time from 7,440 flights
- 3 PM: 74.9% on time from 7,811 flights
- 4 PM: 73.3% on time from 7,181 flights
- 5 PM: 71.6% on time from 9,010 flights
- 6 PM: 72.1% on time from 9,668 flights
- 7 PM: 70.8% on time from 6,054 flights
- 8 PM: 69.6% on time from 3,971 flights
- 9 PM: 68.3% on time from 1,512 flights
- 10 PM to 11 PM: too few flights to score
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Buckets with fewer than 120 flights are not scored.
What to expect at CMH
How busy the airport is through the day, from scheduled departure volume.
Scheduled departures by hour
- 12 AM: no departures
- 1 AM: no departures
- 2 AM: no departures
- 3 AM: no departures
- 4 AM: no departures
- 5 AM: about 5 departures a day
- 6 AM: about 16 departures a day
- 7 AM: about 12 departures a day
- 8 AM: about 8 departures a day
- 9 AM: about 5 departures a day
- 10 AM: about 7 departures a day
- 11 AM: about 8 departures a day
- 12 PM: about 7 departures a day
- 1 PM: about 5 departures a day
- 2 PM: about 7 departures a day
- 3 PM: about 7 departures a day
- 4 PM: about 6 departures a day
- 5 PM: about 8 departures a day
- 6 PM: about 9 departures a day
- 7 PM: about 5 departures a day
- 8 PM: about 4 departures a day
- 9 PM: about 1 departure a day
- 10 PM: fewer than one departure a day
- 11 PM: fewer than one departure a day
The busiest hour is 6 AM, with about 16 departures a day, against roughly 1 at 9 PM. 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
Tuesday is historically the most reliable day and Sunday the least, a gap of 5.4 percentage points.
By month
- Jan: 80.4% on time
- Feb: 83.3% on time
- Mar: 80.9% on time
- Apr: 84.3% on time
- May: 80.2% on time
- Jun: 79.4% on time
- Jul: 76.8% on time
- Aug: 82.7% on time
- Sep: 86.2% on time
- Oct: 86.7% on time
- Nov: 85.8% on time
- Dec: 80.4% on time
July is historically the weakest month and October the strongest, a spread of 9.9 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026
Airlines at CMH
Departure performance by operating carrier. Regional flights are reported by the carrier that operated them, not by the mainline brand.
| Carrier | Departures | On time | Cancelled | Median delay |
|---|---|---|---|---|
| Southwest Airlines WN | 37,586 | 82.2% | 0.87% | -7 min |
| Republic Airways YX | 37,392 | 85.7% | 2.40% | -11 min |
| American Airlines AA | 11,877 | 79.5% | 1.94% | -8 min |
| Delta Air Lines DL | 10,729 | 87.8% | 1.01% | -12 min |
| Envoy Air MQ | 9,722 | 79.7% | 0.87% | -7 min |
| United Airlines UA | 9,083 | 75.3% | 1.16% | -3 min |
| Spirit Airlines NK | 5,904 | 77.6% | 2.13% | -8 min |
| PSA Airlines OH | 4,462 | 75.3% | 3.23% | -6 min |
| SkyWest Airlines OO | 3,986 | 79.4% | 1.35% | -8 min |
| Alaska Airlines AS | 1,477 | 77.2% | 1.08% | -3 min |
| Frontier Airlines F9 | 1,102 | 68.6% | 2.45% | -4 min |
| Endeavor Air 9E | 685 | 87.4% | 0.44% | -11 min |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Carriers with fewer than 500 departures are not listed.
Routes from CMH
Ranked by FlyerIntel Route Reliability Score.
Most reliable
Least reliable
Busiest routes
| Destination | Flights | On time | Score |
|---|---|---|---|
| CMH → ORD Chicago | 12,181 | 77.6% | 58 |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Only routes with at least 10,000 flights are ranked.
Reliability over time
On-time arrival rate for departures, by month.
- July 2023: 75.7% on time from 3,745 flights
- August 2023: 84.7% on time from 3,744 flights
- September 2023: 85.6% on time from 3,485 flights
- October 2023: 88.7% on time from 3,642 flights
- November 2023: 89.7% on time from 3,408 flights
- December 2023: 88.8% on time from 3,319 flights
- January 2024: 80.1% on time from 3,168 flights
- February 2024: 86.1% on time from 3,043 flights
- March 2024: 82.8% on time from 3,461 flights
- April 2024: 85.2% on time from 3,351 flights
- May 2024: 79.5% on time from 3,580 flights
- June 2024: 82.2% on time from 3,629 flights
- July 2024: 77.3% on time from 3,797 flights
- August 2024: 81.1% on time from 3,707 flights
- September 2024: 87.8% on time from 3,548 flights
- October 2024: 90.8% on time from 3,849 flights
- November 2024: 88.0% on time from 3,610 flights
- December 2024: 82.3% on time from 3,528 flights
- January 2025: 79.6% on time from 3,283 flights
- February 2025: 81.1% on time from 3,103 flights
- March 2025: 83.9% on time from 3,760 flights
- April 2025: 83.5% on time from 3,824 flights
- May 2025: 77.7% on time from 3,851 flights
- June 2025: 75.1% on time from 3,926 flights
- July 2025: 73.3% on time from 3,933 flights
- August 2025: 82.1% on time from 3,758 flights
- September 2025: 85.2% on time from 3,726 flights
- October 2025: 81.1% on time from 4,031 flights
- November 2025: 79.9% on time from 3,641 flights
- December 2025: 70.7% on time from 3,567 flights
- January 2026: 81.6% on time from 3,296 flights
- February 2026: 82.9% on time from 3,231 flights
- March 2026: 76.4% on time from 4,010 flights
- April 2026: 84.2% on time from 3,713 flights
- May 2026: 83.4% on time from 3,860 flights
- June 2026: 81.0% on time from 3,876 flights
- July 2026: 80.9% on time from 4,002 flights
Over the most recent 12 months (2025-08 to 2026-07), departures from CMH arrived on time 80.8% of the time, against 81.9% in the 12 months before — broadly unchanged.
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 134,005 departures from CMH. A flight counts as delayed when it arrives 15 or more minutes after schedule.
Full methodology · All data sources
Related research: The Day After the Holiday · The Least Reliable Hour of the Week · The Best Major Airports for a Tight Connection · Which Months Cancel the Most Flights
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<a href="https://flyerintel.com/airports/cmh/"><img src="https://flyerintel.com/badge/airport/cmh/" alt="John Glenn Columbus 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.
Latest observation for CMH: METAR KCMH 180851Z 00000KT CLR 03/02 A3052 RMK AO2 SLP339 T00280017 53005 $ (issued ).