Delta Air Lines is the most reliable airline on the TPA to SEA route with a 83% on-time rate, compared to Alaska Airlines at 70%. Based on 1,285 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: TPA to SEA
Tampa to Seattle — airline reliability comparison
On-Time Rate by Airline
Delta Air Lines83%
Alaska Airlines70%
TPA to SEA Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Delta Air LinesDLBest | 83% | 1.0% | 69m | 1,285 |
| Alaska AirlinesASWorst | 70% | 1.5% | 56m | 2,412 |
Route Overview
75%
Overall On-Time
60m
Avg Delay
1.3%
Cancel Rate
3,697
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.