Cyril E King in July 2025

81.0%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 July 2025, reporting carriers scheduled 510 domestic departures from Cyril E King (STT). 81.0% left less than 15 minutes late and 81.2% reached their destination on time; 0.0% were cancelled.

Nationally that month, 69.7% of flights departed on time and 69.0% arrived on time, so STT departures were 11.3 points above the national departure figure.

A year earlier, in July 2024, the airport had 495 departures with 69.9% leaving on time: a change of +11.1 points, with flights up 3%.

Flights arriving at STT that month were on time 80.0% of the time (510 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 72%, air carrier 17% and national aviation system 10%.

On time 81.2%
Arrived 15+ minutes late 16.1%
Cancelled 0.0%
Diverted 2.7%

Every scheduled departure from STT in July 2025, judged by arrival at the destination.

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

Measure	Jul 2025	Jul 2024	STT, 12 months to Jul 2026	All reported flights, Jul 2025
Departed on time	81.0%	69.9%	74.9%	69.7%
Arrived on time	81.2%	65.3%	75.9%	69.0%
Cancelled	0.0%	1.8%	2.1%	2.5%
Average departure delay (late minutes only)	16.4 min	31.8 min	21.9 min	24.3 min
Scheduled departures a day	17	17	15	21,048
Scheduled departures	510	495	5,548	631,428

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AA American Airlines	196	38%	83.7%	-4.2 min	0.0%
NK Spirit Airlines	100	20%	82.0%	-13.3 min	0.0%
DL Delta Air Lines	97	19%	80.4%	-3.0 min	0.0%
UA United Airlines	74	15%	85.1%	-9.9 min	0.0%
B6 JetBlue Airways	35	7%	71.4%	8.9 min	0.0%
F9 Frontier Airlines	8	2%	25.0%	89.6 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
STT–ATL	Charlotte Amalie to Atlanta	66	86.4%	-7.6 min	0.0%
STT–MIA	Charlotte Amalie to Miami	66	84.8%	0.2 min	0.0%
STT–JFK	Charlotte Amalie to New York	62	75.8%	2.5 min	0.0%
STT–MCO	Charlotte Amalie to Orlando	62	80.6%	-12.4 min	0.0%
STT–CLT	Charlotte Amalie to Charlotte	61	88.5%	-14.8 min	0.0%
STT–SJU	Charlotte Amalie to San Juan	43	62.8%	23.9 min	0.0%
STT–FLL	Charlotte Amalie to Fort Lauderdale	38	84.2%	-14.7 min	0.0%
STT–DFW	Charlotte Amalie to Dallas/Fort Worth	34	70.6%	6.9 min	0.0%
STT–IAD	Charlotte Amalie to Washington	31	80.6%	-6.8 min	0.0%
STT–IAH	Charlotte Amalie to Houston	31	87.1%	-15.2 min	0.0%
STT–EWR	Charlotte Amalie to Newark	8	87.5%	2.5 min	0.0%
STT–ORD	Charlotte Amalie to Chicago	4	100.0%	-16.2 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), July 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Jul 2025	Minutes
Air carrier	17.4%	31.1%	1,166
Late-arriving aircraft	71.6%	40.8%	4,786
National Aviation System	9.5%	20.7%	635
Extreme weather	1.5%	7.3%	102
Security	0.0%	0.1%	0

6,689 delay minutes on 82 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 July 2025?

81.0% of 510 scheduled domestic departures left less than 15 minutes late, and 81.2% reached their destination on time. The national figures that month were 69.7% and 69.0%.

How does that compare with a year earlier?

In July 2024, 69.9% of 495 departures left on time and 1.8% were cancelled, against 81.0% and 0.0% in July 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for July 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.