Chicago to Harrisburg — airline reliability comparison
Republic Airways is the most reliable airline on the ORD to MDT route with a 84% on-time rate, compared to American Airlines at 69%. Based on 774 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 | 84% | 2.3% | 45m | 774 |
| MQ | 80% | 1.8% | 63m | 880 |
| SkyWest AirlinesOO | 75% | 2.1% | 64m | 1,156 |
| United AirlinesUA | 70% | 1.1% | 68m | 1,595 |
| American AirlinesAAWorst | 69% | 4.8% | 96m | 264 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.