Houston to Dallas — airline reliability comparison
Spirit Airlines is the most reliable airline on the IAH to DFW route with a 87% on-time rate, compared to Frontier Airlines at 55%. Based on 192 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 |
|---|---|---|---|---|
| Spirit AirlinesNKBest | 87% | 1.4% | 53m | 192 |
| SkyWest AirlinesOO | 80% | 2.8% | 76m | 254 |
| MQ | 80% | 3.4% | 85m | 2,864 |
| American AirlinesAA | 75% | 3.2% | 121m | 8,813 |
| United AirlinesUA | 71% | 1.6% | 72m | 6,374 |
| Frontier AirlinesF9Worst | 55% | 2.5% | 96m | 531 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.