Sitka Rocky Gutierrez in August 2025

72.7%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 2025, reporting carriers scheduled 143 domestic departures from Sitka Rocky Gutierrez (SIT). 72.7% left less than 15 minutes late and 66.4% reached their destination on time; 0.7% were cancelled.

Nationally that month, 76.8% of flights departed on time and 76.3% arrived on time, so SIT departures were 4.1 points below the national departure figure.

A year earlier, in August 2024, the airport had 174 departures with 76.4% leaving on time: a change of −3.7 points, with flights down 18%.

Flights arriving at SIT that month were on time 68.3% of the time (142 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 51%, national aviation system 21% and air carrier 20%.

On time 66.4%
Arrived 15+ minutes late 31.5%
Cancelled 0.7%
Diverted 1.4%

Every scheduled departure from SIT in August 2025, judged by arrival at the destination.

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

Measure	Aug 2025	Aug 2024	SIT, 12 months to Jul 2026	All reported flights, Aug 2025
Departed on time	72.7%	76.4%	81.6%	76.8%
Arrived on time	66.4%	76.4%	79.8%	76.3%
Cancelled	0.7%	4.0%	2.6%	1.1%
Average departure delay (late minutes only)	12.6 min	21.0 min	11.3 min	17.6 min
Scheduled departures a day	5	6	4	20,079
Scheduled departures	143	174	1,333	602,378

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AS Alaska Airlines	143	100%	66.4%	8.7 min	0.7%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SIT–JNU	Sitka to Juneau	62	80.6%	-2.7 min	1.6%
SIT–SEA	Sitka to Seattle	50	44.0%	27.5 min	0.0%
SIT–KTN	Sitka to Ketchikan	31	74.2%	0.1 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 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Aug 2025	Minutes
Air carrier	19.6%	33.1%	363
Late-arriving aircraft	51.2%	40.5%	946
National Aviation System	20.6%	19.2%	381
Extreme weather	0.7%	7.0%	13
Security	7.9%	0.1%	146

1,849 delay minutes on 45 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 SIT on time in August 2025?

72.7% of 143 scheduled domestic departures left less than 15 minutes late, and 66.4% reached their destination on time. The national figures that month were 76.8% and 76.3%.

How does that compare with a year earlier?

In August 2024, 76.4% of 174 departures left on time and 4.0% were cancelled, against 72.7% and 0.7% in August 2025.

Provenance

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