Southwest Airlines is the most reliable airline on the STL to TPA route with a 80% on-time rate, compared to Frontier Airlines at 63%. Based on 4,053 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: STL to TPA
St. Louis to Tampa — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines80%
Frontier Airlines63%
STL to TPA Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 80% | 1.1% | 55m | 4,053 |
| Frontier AirlinesF9Worst | 63% | 3.1% | 160m | 74 |
Route Overview
80%
Overall On-Time
59m
Avg Delay
1.1%
Cancel Rate
4,143
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.