Boston to Nashville — airline reliability comparison
Delta Air Lines is the most reliable airline on the BOS to BNA route with a 79% on-time rate, compared to Spirit Airlines at 73%. Based on 1,905 flights tracked.
This route involves weather-prone airports, which can affect reliability regardless of airline.
Source: Bureau of Transportation Statistics. Updated October 2026.| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Delta Air LinesDLBest | 79% | 1.0% | 72m | 1,905 |
| Southwest AirlinesWN | 77% | 1.1% | 62m | 3,180 |
| Republic AirwaysYX | 76% | 2.1% | 67m | 1,211 |
| SkyWest AirlinesOO | 74% | 1.9% | 108m | 102 |
| JetBlue AirwaysB6 | 73% | 1.9% | 68m | 2,717 |
| Spirit AirlinesNKWorst | 73% | 3.3% | 67m | 501 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.