Cyril E King in April 2025

81.6%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 490 domestic departures from Cyril E King (STT). 81.6% left less than 15 minutes late and 83.7% reached their destination on time; 0.4% were cancelled.

Nationally that month, 80.6% of flights departed on time and 79.5% arrived on time, so STT departures were 1.0 points above the national departure figure.

A year earlier, in April 2024, the airport had 542 departures with 77.3% leaving on time: a change of +4.3 points, with flights down 10%.

Flights arriving at STT that month were on time 80.6% of the time (490 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 60%, late-arriving aircraft 32% and national aviation system 6%.

On time 83.7%
Arrived 15+ minutes late 14.7%
Cancelled 0.4%
Diverted 1.2%

Every scheduled departure from STT 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	STT, 12 months to Jul 2026	All reported flights, Apr 2025
Departed on time	81.6%	77.3%	74.9%	80.6%
Arrived on time	83.7%	71.4%	75.9%	79.5%
Cancelled	0.4%	1.1%	2.1%	0.8%
Average departure delay (late minutes only)	19.2 min	18.2 min	21.9 min	14.1 min
Scheduled departures a day	16	18	15	19,465
Scheduled departures	490	542	5,548	583,950

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AA American Airlines	204	42%	81.9%	2.0 min	0.0%
DL Delta Air Lines	88	18%	85.2%	2.3 min	1.1%
NK Spirit Airlines	75	15%	80.0%	0.5 min	1.3%
UA United Airlines	72	15%	90.3%	-10.2 min	0.0%
B6 JetBlue Airways	51	10%	84.3%	-8.3 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
STT–MIA	Charlotte Amalie to Miami	90	82.2%	15.2 min	0.0%
STT–JFK	Charlotte Amalie to New York	62	83.9%	-0.5 min	0.0%
STT–CLT	Charlotte Amalie to Charlotte	60	83.3%	-3.5 min	0.0%
STT–ATL	Charlotte Amalie to Atlanta	56	87.5%	-6.7 min	1.8%
STT–SJU	Charlotte Amalie to San Juan	51	84.3%	-8.3 min	0.0%
STT–MCO	Charlotte Amalie to Orlando	41	73.2%	11.4 min	2.4%
STT–FLL	Charlotte Amalie to Fort Lauderdale	34	88.2%	-12.1 min	0.0%
STT–EWR	Charlotte Amalie to Newark	30	96.7%	-18.4 min	0.0%
STT–IAD	Charlotte Amalie to Washington	30	90.0%	-8.4 min	0.0%
STT–PHL	Charlotte Amalie to Philadelphia	19	68.4%	-5.4 min	0.0%
STT–ORD	Charlotte Amalie to Chicago	9	55.6%	22.2 min	0.0%
STT–DFW	Charlotte Amalie to Dallas/Fort Worth	4	100.0%	-34.2 min	0.0%

By scheduled departure hour

100

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	60.1%	32.7%	4,425
Late-arriving aircraft	31.9%	39.4%	2,351
National Aviation System	5.7%	22.2%	419
Extreme weather	1.4%	5.5%	105
Security	0.9%	0.2%	63

7,363 delay minutes on 72 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 STT on time in April 2025?

81.6% of 490 scheduled domestic departures left less than 15 minutes late, and 83.7% 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, 77.3% of 542 departures left on time and 1.1% were cancelled, against 81.6% and 0.4% 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 STT · methodology · corrections.