Sitka Rocky Gutierrez in September 2025

85.0%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 September 2025, reporting carriers scheduled 120 domestic departures from Sitka Rocky Gutierrez (SIT). 85.0% left less than 15 minutes late and 83.3% reached their destination on time; 0.8% were cancelled.

Nationally that month, 83.1% of flights departed on time and 82.8% arrived on time, so SIT departures were 1.9 points above the national departure figure.

A year earlier, in September 2024, the airport had 128 departures with 87.5% leaving on time: a change of −2.5 points, with flights down 6%.

Flights arriving at SIT that month were on time 85.0% of the time (120 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 72%, air carrier 13% and national aviation system 9%.

On time 83.3%
Arrived 15+ minutes late 15.0%
Cancelled 0.8%
Diverted 0.8%

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

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

Measure	Sep 2025	Sep 2024	SIT, 12 months to Jul 2026	All reported flights, Sep 2025
Departed on time	85.0%	87.5%	81.6%	83.1%
Arrived on time	83.3%	85.2%	79.8%	82.8%
Cancelled	0.8%	0.8%	2.6%	0.5%
Average departure delay (late minutes only)	9.4 min	6.4 min	11.3 min	12.2 min
Scheduled departures a day	4	4	4	18,748
Scheduled departures	120	128	1,333	562,439

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AS Alaska Airlines	120	100%	83.3%	-1.0 min	0.8%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SIT–JNU	Sitka to Juneau	60	90.0%	-9.3 min	1.7%
SIT–KTN	Sitka to Ketchikan	30	86.7%	1.9 min	0.0%
SIT–SEA	Sitka to Seattle	30	66.7%	12.5 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), September 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2025	Minutes
Air carrier	12.6%	34.3%	123
Late-arriving aircraft	71.6%	37.4%	699
National Aviation System	9.2%	22.6%	90
Extreme weather	4.1%	5.6%	40
Security	2.5%	0.1%	24

976 delay minutes on 18 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 September 2025?

85.0% of 120 scheduled domestic departures left less than 15 minutes late, and 83.3% reached their destination on time. The national figures that month were 83.1% and 82.8%.

How does that compare with a year earlier?

In September 2024, 87.5% of 128 departures left on time and 0.8% were cancelled, against 85.0% and 0.8% in September 2025.

Provenance

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