Route · PIT → SEA · 2020–2025 BTS data
Pittsburgh to Seattle
The PIT–SEA corridor (Pittsburgh, PA → Seattle, WA) runs ahead of the national average, served by 1 carrier across roughly 2,125 miles.
Data updated 2026-06-13
- 79.6%
- On-time
- +0.6 pts
- vs US avg
- 57 min
- Delay when late
- 1,848
- Flights
Cancelled
1.4%
Best Month
Jul 2024 92%
Worst Month
Jun 2025 53%
Distance
2,125 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Oct 2025 | 34 | 2 | 1 | 0 | AS |
| Sep 2025 | 52 | 8 | 0 | 0 | AS |
| Aug 2025 | 58 | 23 | 0 | 0 | AS |
| Jul 2025 | 62 | 24 | 2 | 1 | AS |
| Jun 2025 | 60 | 28 | 0 | 0 | AS |
| May 2025 | 48 | 12 | 0 | 0 | AS |
| Apr 2025 | 30 | 6 | 0 | 0 | AS |
| Jan 2025 | 31 | 12 | 1 | 1 | AS |
| Oct 2024 | 30 | 4 | 1 | 0 | AS |
| Sep 2024 | 43 | 2 | 0 | 0 | AS |
| Aug 2024 | 55 | 11 | 3 | 0 | AS |
| Jul 2024 | 62 | 5 | 0 | 0 | AS |
| Jun 2024 | 60 | 23 | 0 | 0 | AS |
| May 2024 | 47 | 12 | 0 | 0 | AS |
| Apr 2024 | 30 | 2 | 0 | 0 | AS |
| Mar 2024 | 31 | 2 | 0 | 0 | AS |
| Jan 2024 | 31 | 4 | 6 | 0 | AS |
| Nov 2023 | 30 | 8 | 0 | 0 | AS |
| Oct 2023 | 31 | 6 | 0 | 0 | AS |
| Sep 2023 | 36 | 5 | 1 | 0 | AS |
| Aug 2023 | 62 | 7 | 0 | 0 | AS |
| Jul 2023 | 62 | 21 | 0 | 0 | AS |
| Jun 2023 | 45 | 12 | 0 | 0 | AS |
| May 2023 | 31 | 0 | 0 | 0 | AS |
Cancellation Rate
1.4%
15 of 1,061 flights
Diversion Rate
0.2%
2 of 1,061 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
PIT - Pittsburgh
Full on-time, delay-cause, and seasonal performance for Pittsburgh, PA.
Origin airport →SEA - Seattle
Full on-time, delay-cause, and seasonal performance for Seattle, WA.
Destination airport →Compare the two airports
See PIT 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 PIT–SEA.
Routes with a similar on-time rate
What the Data Says About PIT to SEA
1,848 tracked flights put the PIT to SEA pairing (Pittsburgh to Seattle) at a 79.6% on-time rate, squarely in line with the wider network. Delays that do occur run 57.4 minutes on average. Across the 2,125-mile route and its 1 carrier, the trailing 24 months show 1.4% cancelled and 0.2% diverted (1,061 flights sampled).
The monthly split is wide on this route: Jul 2024 posted the strongest performance at 92% on-time, while Jun 2025 came in at just 53% - a 39-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.