Delta Air Lines is the most reliable airline on the SEA to TUS route with a 85% on-time rate, compared to Alaska Airlines at 81%. Based on 820 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: SEA to TUS
Seattle to Tucson — airline reliability comparison
On-Time Rate by Airline
Delta Air Lines85%
SkyWest Airlines83%
Alaska Airlines81%
SEA to TUS Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Delta Air LinesDLBest | 85% | 0.8% | 76m | 820 |
| SkyWest AirlinesOO | 83% | 0.2% | 48m | 1,134 |
| Alaska AirlinesASWorst | 81% | 0.3% | 40m | 1,787 |
Route Overview
82%
Overall On-Time
53m
Avg Delay
0.4%
Cancel Rate
3,765
Total Flights
Flying out of SEA? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.