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Route · SEA → SIT · 2020–2025 BTS data

Seattle to Sitka

The SEA–SIT corridor (Seattle, WA → Sitka, AK) runs behind the national average, served by 3 carriers across roughly 861 miles.

Data updated 2026-06-13

74.4%
On-time
-4.6 pts
vs US avg
58 min
Delay when late
1,647
Flights

Cancelled

0.8%

Best Month

Aug 2020 92%

Worst Month

Jul 2025 53%

Distance

861 mi

Carriers

3

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Sep 2025 30 6 0 0 AS
Aug 2025 49 20 0 0 AS
Jul 2025 62 29 1 1 AS
Jun 2025 60 28 0 0 AS
May 2025 35 10 0 0 AS
Sep 2024 37 12 0 0 OO,AS
Aug 2024 80 33 2 3 AS,OO
Jul 2024 93 27 1 0 AS,OO
Jun 2024 84 38 1 2 AS,OO
May 2024 32 16 0 0 AS
Sep 2023 39 7 0 0 AS,OO
Aug 2023 93 25 0 1 AS,OO
Jul 2023 93 24 0 2 AS,OO
Jun 2023 73 19 0 0 AS,OO
Sep 2022 39 4 0 0 OO,AS
Aug 2022 93 20 1 2 AS,OO
Jul 2022 93 26 4 2 OO,AS
Jun 2022 85 18 3 0 OO,AS
Sep 2021 41 8 0 0 OO,AS
Aug 2021 78 17 0 0 OO,AS
Jul 2021 92 9 0 0 OO,AS
Jun 2021 60 12 0 1 OO,AS
Sep 2020 30 2 0 0 AS
Aug 2020 61 5 0 1 AS,OO

Cancellation Rate

0.8%

13 of 1,532 flights

Diversion Rate

1.0%

15 of 1,532 flights

What the Data Says About SEA to SIT

On-time performance on the SEA to SIT pairing (Seattle to Sitka) trails a chunk of the network: 74.4% of 1,647 tracked flights arrived on schedule, with a 57.8-minute average delay on the ones that ran late. The route spans about 861 miles across 3 carriers. Cancellations over the trailing 24 months hit 0.8% (13 of 1,532 flights), with 1.0% diverted.

The monthly split is wide on this route: Aug 2020 posted the strongest performance at 92% on-time, while Jul 2025 came in at just 53% - a 39-point swing worth factoring into travel timing.

Frequently Asked Questions

How often are flights delayed from SEA to SIT?
Flights from Seattle to Sitka have a 74.4% on-time rate based on 1,647 flights. The average delay is 57.8 minutes. The best recent month was Aug 2020 with 92% on-time.
What is the cancellation rate for SEA to SIT?
Over the last 24 months, 0.8% of flights on this route were cancelled (13 of 1,532 flights) and 1.0% were diverted.
How far is the flight from SEA to SIT?
The flight distance from Seattle (SEA) to Sitka (SIT) is approximately 861 miles. This route is served by 3 carriers.
When is the best time to fly from SEA to SIT?
The best recent month for on-time performance was Aug 2020 (92% on-time). The worst was Jul 2025 (53% on-time). Consider booking during months with historically better performance.

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Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights Editorial

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.