Southwest Airlines is the most reliable airline on the BNA to PIT route with a 80% on-time rate, compared to Allegiant Air at 78%. Based on 3,133 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: BNA to PIT
Nashville to Pittsburgh — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines80%
Allegiant Air78%
BNA to PIT Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 80% | 0.7% | 54m | 3,133 |
| Allegiant AirG4Worst | 78% | 0.0% | 39m | 163 |
Route Overview
79%
Overall On-Time
55m
Avg Delay
0.6%
Cancel Rate
3,522
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.