Charleston AFB/International in April 2025

80.8%departed on time

BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.

In April 2025, reporting carriers scheduled 2,263 domestic departures from Charleston AFB/International (CHS). 80.8% left less than 15 minutes late and 77.9% reached their destination on time; 0.7% were cancelled.

Nationally that month, 80.6% of flights departed on time and 79.5% arrived on time, so CHS departures were level with the national departure figure.

A year earlier, in April 2024, the airport had 2,206 departures with 82.6% leaving on time: a change of −1.8 points, with flights up 3%.

Flights arriving at CHS that month were on time 79.5% of the time (2,261 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 37%, air carrier 32% and national aviation system 31%.

On time 77.9%
Arrived 15+ minutes late 21.2%
Cancelled 0.7%
Diverted 0.3%

Every scheduled departure from CHS in April 2025, judged by arrival at the destination.

April 2025 against a year earlier, the airport's year and the nation

Measure	Apr 2025	Apr 2024	CHS, 12 months to Jul 2026	All reported flights, Apr 2025
Departed on time	80.8%	82.6%	77.8%	80.6%
Arrived on time	77.9%	81.5%	77.5%	79.5%
Cancelled	0.7%	0.6%	2.3%	0.8%
Average departure delay (late minutes only)	16.4 min	14.0 min	18.1 min	14.1 min
Scheduled departures a day	75	74	67	19,465
Scheduled departures	2,263	2,206	24,565	583,950

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AA American Airlines	485	21%	77.3%	15.1 min	1.0%
WN Southwest Airlines	347	15%	81.6%	7.0 min	0.0%
DL Delta Air Lines	324	14%	85.5%	-0.7 min	0.3%
UA United Airlines	231	10%	77.1%	11.8 min	0.4%
YX Republic Airline	222	10%	81.1%	3.0 min	0.0%
B6 JetBlue Airways	205	9%	79.0%	2.4 min	0.0%
OH PSA Airlines	176	8%	75.0%	15.3 min	1.1%
NK Spirit Airlines	126	6%	65.9%	18.5 min	2.4%
MQ Envoy Air	56	2%	57.1%	13.5 min	5.4%
OO SkyWest Airlines	39	2%	84.6%	22.7 min	0.0%
AS Alaska Airlines	30	1%	50.0%	15.0 min	0.0%
F9 Frontier Airlines	14	1%	57.1%	37.1 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
CHS–ATL	Charleston to Atlanta	256	87.5%	-2.2 min	0.4%
CHS–CLT	Charleston to Charlotte	229	80.8%	9.9 min	0.0%
CHS–DCA	Charleston to Washington	176	76.7%	10.1 min	1.1%
CHS–PHL	Charleston to Philadelphia	160	74.4%	13.0 min	0.6%
CHS–BOS	Charleston to Boston	152	74.3%	8.8 min	0.0%
CHS–ORD	Charleston to Chicago	151	72.8%	8.5 min	2.0%
CHS–EWR	Charleston to Newark	138	70.3%	20.6 min	2.2%
CHS–BWI	Charleston to Baltimore	114	83.3%	1.7 min	0.0%
CHS–LGA	Charleston to New York	108	79.6%	5.3 min	0.9%
CHS–MIA	Charleston to Miami	87	72.4%	42.1 min	2.3%
CHS–DFW	Charleston to Dallas/Fort Worth	86	70.9%	12.5 min	2.3%
CHS–JFK	Charleston to New York	86	76.7%	0.3 min	0.0%

By scheduled departure hour

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), April 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2025	Minutes
Air carrier	31.8%	32.7%	11,608
Late-arriving aircraft	36.7%	39.4%	13,384
National Aviation System	30.6%	22.2%	11,166
Extreme weather	0.9%	5.5%	327
Security	0.0%	0.2%	0

36,485 delay minutes on 480 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

How many flights left CHS on time in April 2025?

80.8% of 2,263 scheduled domestic departures left less than 15 minutes late, and 77.9% reached their destination on time. The national figures that month were 80.6% and 79.5%.

How does that compare with a year earlier?

In April 2024, 82.6% of 2,206 departures left on time and 0.6% were cancelled, against 80.8% and 0.7% in April 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for April 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for CHS · methodology · corrections.