Southwest Airlines is the most reliable airline on the BNA to PWM route with a 78% on-time rate. Based on 299 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: BNA to PWM
Nashville to Portland — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines78%
BNA to PWM Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 78% | 0.4% | 41m | 299 |
Route Overview
79%
Overall On-Time
41m
Avg Delay
0.3%
Cancel Rate
299
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.