Chicago to Louisville — airline reliability comparison
Republic Airways is the most reliable airline on the ORD to SDF route with a 80% on-time rate, compared to United Airlines at 76%. Based on 4,833 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 |
|---|---|---|---|---|
| Republic AirwaysYXBest | 80% | 1.9% | 68m | 4,833 |
| MQ | 78% | 1.5% | 51m | 1,333 |
| SkyWest AirlinesOO | 77% | 1.9% | 69m | 1,665 |
| United AirlinesUAWorst | 76% | 1.0% | 63m | 362 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.