Sitka Rocky Gutierrez in May 2025

84.3%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 May 2025, reporting carriers scheduled 127 domestic departures from Sitka Rocky Gutierrez (SIT). 84.3% left less than 15 minutes late and 83.5% reached their destination on time; 0.8% were cancelled.

Nationally that month, 76.7% of flights departed on time and 75.4% arrived on time, so SIT departures were 7.6 points above the national departure figure.

A year earlier, in May 2024, the airport had 124 departures with 87.9% leaving on time: a change of −3.6 points, with flights up 2%.

Flights arriving at SIT that month were on time 78.1% of the time (128 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 58%, air carrier 31% and national aviation system 11%.

On time 83.5%
Arrived 15+ minutes late 15.7%
Cancelled 0.8%
Diverted 0.0%

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

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

Measure	May 2025	May 2024	SIT, 12 months to Jul 2026	All reported flights, May 2025
Departed on time	84.3%	87.9%	81.6%	76.7%
Arrived on time	83.5%	88.7%	79.8%	75.4%
Cancelled	0.8%	0.0%	2.6%	1.0%
Average departure delay (late minutes only)	7.1 min	8.4 min	11.3 min	17.5 min
Scheduled departures a day	4	4	4	20,188
Scheduled departures	127	124	1,333	605,648

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AS Alaska Airlines	127	100%	83.5%	-1.6 min	0.8%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SIT–JNU	Sitka to Juneau	62	82.3%	-1.6 min	1.6%
SIT–SEA	Sitka to Seattle	34	79.4%	2.5 min	0.0%
SIT–KTN	Sitka to Ketchikan	31	90.3%	-6.1 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), May 2025.

Delay causes

BTS cause category	Share of delay minutes	National, May 2025	Minutes
Air carrier	31.0%	29.3%	279
Late-arriving aircraft	57.6%	37.8%	518
National Aviation System	11.4%	25.9%	103
Extreme weather	0.0%	6.9%	0
Security	0.0%	0.1%	0

900 delay minutes on 20 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 May 2025?

84.3% of 127 scheduled domestic departures left less than 15 minutes late, and 83.5% reached their destination on time. The national figures that month were 76.7% and 75.4%.

How does that compare with a year earlier?

In May 2024, 87.9% of 124 departures left on time and 0.0% were cancelled, against 84.3% and 0.8% in May 2025.

Provenance

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