Route · SIT → SEA · 2020–2025 BTS data
Sitka to Seattle
The SIT–SEA corridor (Sitka, AK → Seattle, WA) runs behind the national average, served by 3 carriers across roughly 861 miles.
Data updated 2026-06-13
- 78.8%
- On-time
- -0.2 pts
- vs US avg
- 75 min
- Delay when late
- 1,678
- Flights
Cancelled
1.1%
Best Month
Aug 2020 92%
Worst Month
Jul 2025 61%
Distance
861 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Sep 2025 | 30 | 10 | 0 | 0 | AS |
| Aug 2025 | 50 | 28 | 0 | 0 | AS |
| Jul 2025 | 62 | 24 | 1 | 0 | AS |
| Jun 2025 | 60 | 23 | 1 | 0 | AS |
| May 2025 | 34 | 7 | 0 | 0 | AS |
| Sep 2024 | 38 | 11 | 0 | 0 | OO,AS |
| Aug 2024 | 81 | 24 | 3 | 1 | AS,OO |
| Jul 2024 | 93 | 20 | 1 | 0 | AS,OO |
| Jun 2024 | 83 | 19 | 2 | 0 | AS,OO |
| May 2024 | 31 | 4 | 0 | 0 | AS |
| Sep 2023 | 40 | 9 | 0 | 0 | AS,OO |
| Aug 2023 | 93 | 20 | 0 | 0 | AS,OO |
| Jul 2023 | 93 | 15 | 0 | 0 | AS,OO |
| Jun 2023 | 71 | 8 | 0 | 0 | AS,OO |
| Sep 2022 | 41 | 9 | 0 | 0 | OO,AS |
| Aug 2022 | 93 | 24 | 1 | 0 | AS,OO |
| Jul 2022 | 93 | 23 | 4 | 1 | OO,AS |
| Jun 2022 | 84 | 13 | 3 | 0 | OO,AS |
| Sep 2021 | 42 | 10 | 0 | 0 | OO,AS |
| Aug 2021 | 78 | 15 | 1 | 0 | OO,AS |
| Jul 2021 | 92 | 13 | 0 | 0 | OO,AS |
| Jun 2021 | 60 | 13 | 0 | 0 | OO,AS |
| Sep 2020 | 30 | 3 | 0 | 0 | AS |
| Aug 2020 | 92 | 7 | 0 | 0 | AS,OO |
Cancellation Rate
1.1%
17 of 1,564 flights
Diversion Rate
0.1%
2 of 1,564 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
SIT - Sitka
Full on-time, delay-cause, and seasonal performance for Sitka, AK.
Origin airport →SEA - Seattle
Full on-time, delay-cause, and seasonal performance for Seattle, WA.
Destination airport →Compare the two airports
See SIT and SEA side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to SIT–SEA.
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What the Data Says About SIT to SEA
1,678 tracked flights put the SIT to SEA pairing (Sitka to Seattle) at a 78.8% on-time rate, squarely in line with the wider network. Delays that do occur run 75.4 minutes on average. Across the 861-mile route and its 3 carriers, the trailing 24 months show 1.1% cancelled and 0.1% diverted (1,564 flights sampled).
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 61% - a 31-point swing worth factoring into travel timing.
Frequently Asked Questions
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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.
Read our methodology - how this data is sourced, computed, and verified.
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.