Nashville to Chicago — airline reliability comparison
Southwest Airlines is the most reliable airline on the BNA to ORD route with a 80% on-time rate, compared to Frontier Airlines at 61%. Based on 2,651 flights tracked.
This route involves weather-prone airports and high-congestion airports, which can affect reliability regardless of airline.
Source: Bureau of Transportation Statistics. Updated October 2026.| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 80% | 1.6% | 55m | 2,651 |
| Republic AirwaysYX | 80% | 2.0% | 79m | 1,254 |
| United AirlinesUA | 78% | 1.9% | 86m | 3,920 |
| SkyWest AirlinesOO | 77% | 1.9% | 100m | 5,568 |
| American AirlinesAA | 76% | 1.4% | 94m | 1,008 |
| MQ | 75% | 2.2% | 68m | 2,450 |
| Spirit AirlinesNK | 67% | 0.0% | 38m | 15 |
| Frontier AirlinesF9Worst | 61% | 2.6% | 77m | 276 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.