Cyril E King in August 2023

74.1%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 August 2023, reporting carriers scheduled 320 domestic departures from Cyril E King (STT). 74.1% left less than 15 minutes late and 66.6% reached their destination on time; 0.6% were cancelled.

Nationally that month, 76.7% of flights departed on time and 76.9% arrived on time, so STT departures were 2.6 points below the national departure figure.

Flights arriving at STT that month were on time 74.7% of the time (320 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 58%, air carrier 21% and national aviation system 18%.

On time 66.6%
Arrived 15+ minutes late 29.7%
Cancelled 0.6%
Diverted 3.1%

Every scheduled departure from STT in August 2023, judged by arrival at the destination.

August 2023 against a year earlier, the airport's year and the nation

Measure	Aug 2023	Year earlier	STT, 12 months to Jul 2026	All reported flights, Aug 2023
Departed on time	74.1%	—	74.9%	76.7%
Arrived on time	66.6%	—	75.9%	76.9%
Cancelled	0.6%	—	2.1%	1.5%
Average departure delay (late minutes only)	20.5 min	—	21.9 min	17.3 min
Scheduled departures a day	11	—	15	20,100
Scheduled departures	320	—	5,548	602,987

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AA American Airlines	113	35%	77.0%	1.9 min	0.0%
NK Spirit Airlines	62	19%	37.1%	26.7 min	0.0%
DL Delta Air Lines	48	15%	81.3%	-5.0 min	0.0%
UA United Airlines	48	15%	93.8%	6.8 min	0.0%
B6 JetBlue Airways	35	11%	28.6%	58.0 min	5.7%
F9 Frontier Airlines	14	4%	64.3%	21.1 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
STT–MIA	Charlotte Amalie to Miami	62	75.8%	4.0 min	0.0%
STT–SJU	Charlotte Amalie to San Juan	49	38.8%	46.8 min	4.1%
STT–ATL	Charlotte Amalie to Atlanta	39	82.1%	-7.5 min	0.0%
STT–CLT	Charlotte Amalie to Charlotte	33	78.8%	-10.2 min	0.0%
STT–FLL	Charlotte Amalie to Fort Lauderdale	31	45.2%	21.7 min	0.0%
STT–MCO	Charlotte Amalie to Orlando	31	29.0%	31.2 min	0.0%
STT–JFK	Charlotte Amalie to New York	23	78.3%	15.5 min	0.0%
STT–IAD	Charlotte Amalie to Washington	17	100.0%	-13.3 min	0.0%
STT–IAH	Charlotte Amalie to Houston	17	100.0%	-23.4 min	0.0%
STT–EWR	Charlotte Amalie to Newark	8	75.0%	124.0 min	0.0%
STT–ORD	Charlotte Amalie to Chicago	6	83.3%	-7.3 min	0.0%
STT–DFW	Charlotte Amalie to Dallas/Fort Worth	2	100.0%	-22.5 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), August 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Aug 2023	Minutes
Air carrier	21.4%	36.7%	1,417
Late-arriving aircraft	58.4%	42.2%	3,872
National Aviation System	17.7%	15.7%	1,170
Extreme weather	2.5%	5.1%	169
Security	0.0%	0.2%	0

6,628 delay minutes on 95 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 August 2023?

74.1% of 320 scheduled domestic departures left less than 15 minutes late, and 66.6% reached their destination on time. The national figures that month were 76.7% and 76.9%.

How does that compare with a year earlier?

August 2022 is outside the 36 months on file, or the airport had too few reported flights that month.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for August 2023; 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.