CHS Airport: 80.6% on time, worst at 9 PM

CHS 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.

Departures at this hour

92.9% leave on time

05:00–05:59 local · 2,817 departures on record

Typical taxi out13 min

Median arrival14 min early

Cancelled2.1%

When flights run late in this hour, most of the delay is attributed to the airline.

Historical pattern for CHS from US DOT BTS — not a live reading.

Aviation weatherVFR

49°F · wind 12 kt gusting 19

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

Updated 08:56 UTC

Forecast issued 05:22Z.

Updated 05:22 UTC

Aircraft seen now

On the field0

Airborne within 15 NM0

Departed in the last hour0

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 09:02 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.

Security wait times

Main checkpoint closed—

TSA PreCheck PreCheck closed—

Updated 09:02 UTC

Parking

Daily Deck—

Economy—

Hourly Deck—

Overflow—

Valet Parking—

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

Airport reliability

Departures from CHS, July 2023 – July 2026.

Airport Reliability Score

61/ 100Good

Better than 31% of major US airports covered by FlyerIntel (64 compared)

Calculated from 77,398 flights. How this is calculated

Departures arriving on time

80.6%

60,867 of 75,561 completed

Cancellation rate

2.10%

1,622 cancelled

Median arrival delay

-8 min

Average 7.9 min

Severe delays

7.6%

Arrived 60+ minutes late

Delay when late

84 min

Average, when 15+ min late

Departures analyzed

77,398

77,396 arrivals

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

Why flights are cancelled at CHS

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

Extreme weather accounts for 58.2% of cancelled departures from CHS — about 1 in every 82 scheduled departures. That is close to the split across every airport FlyerIntel covers.

Share of cancellations

Weather58.2%

Airline24.3%

Air traffic17.5%

Security0.0%

Of 1,622 cancelled departures carrying a reason code.

What each reason means

Extreme weather1 in 82

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

944 cancellations, 58.2% of the total.

The airline1 in 196

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

394 cancellations, 24.3% of the total.

The air traffic system1 in 273

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

284 cancellations, 17.5% 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.

1,622 of 77,398 scheduled departures from CHS 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; 1,622 were recorded at CHS.

Why flights run late at CHS

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

Late-arriving aircraft44.6%

the inbound aircraft was late, so this flight started late

The airline29.5%

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

Air traffic control22.6%

airspace and airport capacity, including weather-driven flow control

Weather3.3%

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 CHS. Only delays of 15 minutes or more are attributed.

Of the 13,859 departures from CHS that left 15 or more minutes late and have a known inbound aircraft, 69% followed a flight that landed 15 or more minutes late. The other 31% 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%; CHS’s is the 3rd highest.

The late flight is the one the same aircraft flew into CHS 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 CHS 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 CHS

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

6.6% of scheduled departures from CHS left in an hour of bad weather. 4.0% of them were cancelled, against 1.9% in normal conditions, and 72.6% of the ones that flew arrived on time, against 81.1%. Those hours held 13% of all cancelled departures. That is about 110 more cancellations than the normal-conditions rate would give.

Cancellations were highest in high wind hours: 10.2% of 571 departures, 5.5 times the normal rate.

Airlines filed 58% of CHS’ coded cancellations under extreme weather. By the weather at the airport in the scheduled hour, 13% 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 CHS 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	66,22785.6% of all	1.9%	81.3%	81.1%	12.2 min
Any bad weatherIFR or LIFR, or a thunderstorm, snow or ice, fog, heavy rain or high wind	5,1056.6% of all	4.0%2.2 times normal	73.7%	72.6%8.5 points below normal	23.9 min
MVFRceiling 1,000 to 3,000 feet or visibility 3 to 5 miles	6,6118.5% of all	3.5%1.9 times normal	78.2%	78.6%2.5 points below normal	15.4 min
IFRceiling 500 to 999 feet or visibility 1 to under 3 miles	2,6593.4% of all	3.0%1.6 times normal	76.8%	76.3%4.8 points below normal	19.0 min
LIFRceiling under 500 feet or visibility under 1 mile	1,1771.5% of all	2.8%1.5 times normal	83.3%	82.1%1.0 points above normal	12.1 min
Thunderstorma thunderstorm reported at the airport	1,0221.3% of all	3.2%1.7 times normal	48.9%	45.4%35.7 points below normal	57.7 min
Fogfog or freezing fog reported at the airport	4000.5% of all	2.3%	89.3%	86.2%5.1 points above normal	3.0 min
Heavy rainheavy rain reported at the airport	8101.0% of all	2.6%	60.7%	57.1%24.0 points below normal	41.9 min
High windwind of 25 knots or more, or gusts of 30 knots or more	5710.7% of all	10.2%5.5 times normal	57.3%	55.4%25.7 points below normal	57.8 min
Low ceilinga broken or overcast layer under 1,000 feet	2,9843.9% of all	2.8%	81.7%	81.2%	12.3 min
Low visibilityvisibility under 3 miles	1,7342.2% of all	3.7%2.0 times normal	75.8%	74.0%7.1 points below normal	22.1 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. Too few departures to score: snow or ice (42).

This is the weather reported at CHS 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.

Turning aircraft around at CHS

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

The median turn at CHS is scheduled for 50 minutes on the ground and takes 54 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 typical turn runs 4 minutes over its schedule, closer to it than the 7 minutes across all airports.

When the aircraft landed 15 or more minutes late (11,299 turns here, 60 minutes late on average), 66% of the turns were finished in no more than the scheduled ground time, against 68% across all airports. 81% of those flights left 15 or more minutes late, against 72%. After an aircraft that landed on time, 8% did (all airports 11%).

Given the turn lengths scheduled here, the network’s rates would give 60% finished in the schedule and 81% leaving late. CHS finishes more late turns in the schedule than the network would, but lateness is passed on about as often. 42% of its late-inbound turns had a scheduled turn of 45 to 59 minutes, against 31% across all airports.

Turns at CHS against all airports

57,192 turns, July 2023 – July 2026

Aircraft turns at CHS against all airports: scheduled and actual time on the ground and what a late inbound aircraft does
Measure	CHS	All airports	All airports, same turn lengths
Median scheduled turn	50 min	56 min	—
Median actual turn	54 min	63 min	—
Turns that began with an aircraft 15+ minutes late	20%	19%	—
Late turns finished within the schedule	66%	68%	60%
Late inbound that left 15+ minutes late	81%	72%	81%
On-time inbound that left 15+ minutes late	8%	11%	—

The last column is the network’s rate at the turn lengths scheduled at CHS, 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 CHS with its next departure from it by tail number; the aircraft is never named. These 57,192 turns are 74% of the flights that left CHS 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 CHS 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 CHS apart

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

Flights scheduled to leave CHS at 10 AM arrive on time 87.6% of the time, 4.7 points better than the 82.9% for that hour at the other airports.

June treats CHS better than it treats the rest of the country: 77.3% on time against 72.9% elsewhere, 4.4 points ahead.

American Airlines does better out of CHS than anywhere else it flies: 79.5% on time here, 74.8% on its other departures, 4.7 points apart.

SkyWest Airlines’ departures from CHS arrive on time 76.1% of the time, 4.3 points worse than the 80.4% the same airline manages at its other airports.

Taxi-out at CHS averages 16.0 minutes, 2.7 minutes less than the 18.7 minutes elsewhere.

CHS against the other airports

July 2023 – July 2026

Where CHS differs most from the other covered airports, with the flights behind each figure
Measure	CHS	Elsewhere	Gap	Flights behind it
Hour: 10 AM departures	87.6%	82.9%	+4.7 pts	4,606 here, 1,115,604 elsewhere
Month: June	77.3%	72.9%	+4.4 pts	6,605 here, 1,465,272 elsewhere
Airline: American Airlines	79.5%	74.8%	+4.7 pts	14,850 here, 2,941,789 elsewhere
Airline: SkyWest Airlines	76.1%	80.4%	−4.3 pts	1,207 here, 2,392,303 elsewhere
Taxi-out: Departures	16.0 min	18.7 min	−2.7 min	75,816 here, 17,554,293 elsewhere

"Elsewhere" is every other covered airport together, taken from the same aggregates as this page with CHS’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 CHS

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 90.9% of the time, against 67.6% for 9 PM–5 AM departures — a gap of 23.3 percentage points.

By day and hour

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

Thursday 6–7 AM was the most reliable slot at CHS (92.4% on time, 1,280 flights) and Sunday 7–8 PM the least (60.8%, 844 flights).

Hour of departure matters more than day of the week: hourly averages sit a typical 8.3 points from the airport-wide rate, weekday averages 2.2 points.

On-time arrival rate at CHS 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

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 (34 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 CHS. A dash means fewer than 120 flights, which are not scored.
Hour	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
5 AM–6 AM	92.8% on time431 flights	91.3% on time350 flights	95.2% on time363 flights	95.4% on time444 flights	92.5% on time435 flights	92.7% on time378 flights	92.6% on time416 flights
6 AM–7 AM	90.3% on time1,301 flights	92.2% on time1,240 flights	92.2% on time1,227 flights	92.4% on time1,280 flights	91.6% on time1,296 flights	91.7% on time1,130 flights	91.5% on time1,192 flights
7 AM–8 AM	87.2% on time776 flights	90.3% on time754 flights	91.5% on time744 flights	89.9% on time765 flights	87.8% on time782 flights	86.6% on time801 flights	89.4% on time806 flights
8 AM–9 AM	88.7% on time332 flights	91.6% on time367 flights	89.9% on time350 flights	93.6% on time302 flights	89.9% on time334 flights	87.8% on time434 flights	89.7% on time341 flights
9 AM–10 AM	85.8% on time341 flights	90.8% on time306 flights	94.7% on time307 flights	86.3% on time324 flights	88.4% on time330 flights	84.9% on time318 flights	84.9% on time359 flights
10 AM–11 AM	86.3% on time686 flights	90.8% on time625 flights	88.3% on time656 flights	88.2% on time673 flights	84.6% on time712 flights	86.6% on time650 flights	88.6% on time673 flights
11 AM–12 PM	84.6% on time993 flights	89.6% on time962 flights	87.9% on time951 flights	84.7% on time1,004 flights	83.3% on time999 flights	86.3% on time1,063 flights	82.4% on time1,033 flights
12 PM–1 PM	81.1% on time697 flights	87.4% on time594 flights	83.8% on time613 flights	80.2% on time680 flights	78.8% on time667 flights	82.3% on time656 flights	79.7% on time774 flights
1 PM–2 PM	79.3% on time585 flights	81.6% on time531 flights	83.4% on time538 flights	77.9% on time590 flights	77.3% on time589 flights	81.9% on time623 flights	77.4% on time636 flights
2 PM–3 PM	76.3% on time881 flights	81.8% on time856 flights	80.6% on time869 flights	76.1% on time884 flights	75.1% on time866 flights	79.7% on time838 flights	73.9% on time862 flights
3 PM–4 PM	73.2% on time617 flights	78.0% on time580 flights	76.7% on time598 flights	72.3% on time616 flights	70.7% on time640 flights	74.1% on time590 flights	69.4% on time658 flights
4 PM–5 PM	75.4% on time846 flights	74.8% on time751 flights	76.5% on time733 flights	72.3% on time849 flights	71.2% on time852 flights	76.9% on time760 flights	69.7% on time884 flights
5 PM–6 PM	71.6% on time694 flights	74.1% on time631 flights	76.4% on time631 flights	71.0% on time699 flights	67.0% on time708 flights	75.0% on time618 flights	65.2% on time690 flights
6 PM–7 PM	68.0% on time962 flights	74.8% on time845 flights	73.4% on time899 flights	70.3% on time939 flights	68.3% on time955 flights	74.7% on time855 flights	67.5% on time990 flights
7 PM–8 PM	67.5% on time825 flights	71.4% on time666 flights	72.9% on time688 flights	67.4% on time852 flights	69.1% on time822 flights	71.1% on time490 flights	60.8% on time844 flights
8 PM–9 PM	70.9% on time408 flights	71.4% on time236 flights	74.6% on time256 flights	69.1% on time398 flights	70.0% on time407 flights	72.2% on time301 flights	64.4% on time492 flights
9 PM–10 PM	89 flights, too few to score	8 flights, too few to score	12 flights, too few to score	65 flights, too few to score	92 flights, too few to score	33 flights, too few to score	65.0% on time125 flights

By departure window

All days combined

5–9 AM90.9%

9 AM–12 PM86.6%

12–3 PM79.5%

3–6 PM72.8%

6–9 PM69.7%

9 PM–5 AM67.6%

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 to expect at CHS

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

Departures a day

69

Average across the analysis period

Busiest hour

6 AM

About 8 departures

Typical taxi-out

16 min

Pushback to wheels-up, on departure

Typical taxi-in

7.7 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 6 AM, with about 8 departures a day, against roughly 0 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

Mon79.5%

Tue83.5%

Wed83.4%

Thu80.0%

Fri78.7%

Sat82.1%

Sun77.4%

Tuesday is historically the most reliable day and Sunday the least, a gap of 6.1 percentage points.

By month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

July is historically the weakest month and November the strongest, a spread of 13.7 percentage points.

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

Airlines at CHS

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

Airlines at CHS
Carrier	Departures	On time	Cancelled	Median delay
American Airlines AA	15,164	79.5%	1.81%	-7 min
Delta Air Lines DL	12,836	84.9%	1.56%	-10 min
Southwest Airlines WN	11,172	81.0%	0.88%	-5 min
United Airlines UA	7,666	82.9%	1.60%	-8 min
Republic Airways YX	7,396	82.3%	3.58%	-9 min
PSA Airlines OH	5,781	77.2%	3.79%	-8 min
JetBlue B6	5,648	72.6%	2.28%	-5 min
Endeavor Air 9E	2,967	86.3%	3.98%	-11 min
Spirit Airlines NK	2,847	75.2%	3.20%	-7 min
Envoy Air MQ	2,706	82.1%	1.88%	-8 min
SkyWest Airlines OO	1,231	76.1%	1.62%	-4 min
Alaska Airlines AS	1,078	76.5%	1.30%	-3 min
Allegiant Air G4	529	71.5%	1.70%	0 min

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

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 CHS arrived on time 79.6% of the time, against 80.8% 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 77,398 departures from CHS. 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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Charleston International Airport on-time performance, from FlyerIntel

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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 CHS: METAR KCHS 180856Z 01012G19KT 10SM CLR 09/04 A3032 RMK AO2 SLP265 T00940039 51002 (issued 08:56 UTC).