Los Angeles to Houston — airline reliability comparison
United Airlines is the most reliable airline on the LAX to IAH route with a 88% on-time rate, compared to Frontier Airlines at 62%. Based on 12,017 flights tracked.
This route involves 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 | 88% | 1.0% | 62m | 12,017 |
| SkyWest AirlinesOO | 86% | 0.5% | 54m | 1,328 |
| Delta Air LinesDL | 84% | 1.1% | 83m | 2,371 |
| Spirit AirlinesNK | 80% | 1.2% | 82m | 2,769 |
| Frontier AirlinesF9Worst | 62% | 1.9% | 72m | 559 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.