Alaska Airlines is the most reliable airline on the SEA to PIT route with a 80% on-time rate. Based on 1,574 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: SEA to PIT
Seattle to Pittsburgh — airline reliability comparison
On-Time Rate by Airline
Alaska Airlines80%
SEA to PIT Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Alaska AirlinesASBest | 80% | 0.5% | 40m | 1,574 |
Route Overview
79%
Overall On-Time
41m
Avg Delay
0.4%
Cancel Rate
1,575
Total Flights
Flying out of SEA? We'll brief you.
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Data last updated October 2026. Source: Bureau of Transportation Statistics.