Route · PUW → SEA · 2020–2025 BTS data
Pullman to Seattle
The PUW–SEA corridor (Pullman, WA → Seattle, WA) runs ahead of the national average, served by 1 carrier across roughly 250 miles.
Data updated 2026-06-13
- 84.9%
- On-time
- +5.9 pts
- vs US avg
- 63 min
- Delay when late
- 1,990
- Flights
Cancelled
2.3%
Best Month
May 2021 97%
Worst Month
Dec 2022 55%
Distance
250 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2022 | 85 | 38 | 14 | 0 | QX |
| Nov 2022 | 100 | 34 | 1 | 0 | QX |
| Oct 2022 | 125 | 16 | 0 | 1 | QX |
| Sep 2022 | 137 | 14 | 0 | 0 | QX |
| Aug 2022 | 93 | 9 | 1 | 0 | QX |
| Jul 2022 | 93 | 5 | 0 | 0 | QX |
| Jun 2022 | 88 | 9 | 0 | 0 | QX |
| May 2022 | 91 | 7 | 4 | 0 | QX |
| Apr 2022 | 72 | 7 | 1 | 0 | QX |
| Mar 2022 | 62 | 5 | 0 | 0 | QX |
| Feb 2022 | 84 | 15 | 1 | 0 | QX |
| Jan 2022 | 91 | 19 | 4 | 1 | QX |
| Dec 2021 | 62 | 21 | 3 | 0 | QX |
| Nov 2021 | 59 | 8 | 1 | 0 | QX |
| Oct 2021 | 68 | 5 | 0 | 0 | QX |
| Sep 2021 | 90 | 12 | 0 | 0 | QX |
| Aug 2021 | 93 | 15 | 2 | 0 | QX |
| Jul 2021 | 93 | 16 | 0 | 0 | QX |
| Jun 2021 | 90 | 13 | 2 | 0 | QX |
| May 2021 | 74 | 2 | 0 | 0 | QX |
| Apr 2021 | 60 | 3 | 0 | 0 | QX |
| Mar 2021 | 62 | 8 | 2 | 0 | QX |
| Feb 2021 | 56 | 15 | 9 | 0 | QX |
| Jan 2021 | 62 | 4 | 1 | 0 | QX |
Cancellation Rate
2.3%
46 of 1,990 flights
Diversion Rate
0.1%
2 of 1,990 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
PUW - Pullman
Full on-time, delay-cause, and seasonal performance for Pullman, WA.
Origin airport →SEA - Seattle
Full on-time, delay-cause, and seasonal performance for Seattle, WA.
Destination airport →Compare the two airports
See PUW 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 PUW–SEA.
Routes with a similar on-time rate
What the Data Says About PUW to SEA
Bureau of Transportation Statistics records show Pullman to Seattle (PUW to SEA) running a 84.9% on-time rate over 1,990 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 63.2 minutes. The 250-mile corridor is served by 1 carrier, and over the last 24 months 2.3% of 1,990 flights were cancelled, 0.1% diverted.
The monthly split is wide on this route: May 2021 posted the strongest performance at 97% on-time, while Dec 2022 came in at just 55% - a 42-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from PUW to SEA? ▼
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Flight Guides
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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.