Chicago to Houston — airline reliability comparison
United Airlines is the most reliable airline on the ORD to IAH route with a 80% on-time rate, compared to American Airlines at 71%. Based on 13,390 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 |
|---|---|---|---|---|
| United AirlinesUABest | 80% | 0.9% | 63m | 13,390 |
| Republic AirwaysYX | 76% | 2.6% | 78m | 568 |
| MQ | 76% | 0.8% | 55m | 705 |
| Frontier AirlinesF9 | 75% | 2.8% | 97m | 481 |
| Spirit AirlinesNK | 72% | 2.5% | 87m | 1,501 |
| American AirlinesAAWorst | 71% | 1.6% | 76m | 2,454 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.