Delta Air Lines is the most reliable airline on the TUS to SEA route with a 86% on-time rate, compared to Alaska Airlines at 83%. Based on 820 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: TUS to SEA
Tucson to Seattle — airline reliability comparison
On-Time Rate by Airline
Delta Air Lines86%
SkyWest Airlines85%
Alaska Airlines83%
TUS to SEA Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Delta Air LinesDLBest | 86% | 1.3% | 110m | 820 |
| SkyWest AirlinesOO | 85% | 0.2% | 54m | 1,131 |
| Alaska AirlinesASWorst | 83% | 0.4% | 47m | 1,787 |
Route Overview
84%
Overall On-Time
67m
Avg Delay
0.6%
Cancel Rate
3,763
Total Flights
Flying out of TUS? We'll brief you.
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Data last updated October 2026. Source: Bureau of Transportation Statistics.