Frontier Airlines is the most reliable airline on the TPA to STL route with a 88% on-time rate, compared to Southwest Airlines at 81%. Based on 74 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: TPA to STL
Tampa to St. Louis — airline reliability comparison
On-Time Rate by Airline
Frontier Airlines88%
Southwest Airlines81%
TPA to STL Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Frontier AirlinesF9Best | 88% | 1.5% | 55m | 74 |
| Southwest AirlinesWNWorst | 81% | 1.1% | 54m | 4,036 |
Route Overview
81%
Overall On-Time
55m
Avg Delay
1.1%
Cancel Rate
4,126
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.