Houston to Atlanta — airline reliability comparison
SkyWest Airlines is the most reliable airline on the IAH to ATL route with a 86% on-time rate, compared to Frontier Airlines at 56%. Based on 116 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 |
|---|---|---|---|---|
| SkyWest AirlinesOOBest | 86% | 0.0% | 77m | 116 |
| Delta Air LinesDL | 82% | 1.5% | 69m | 8,475 |
| United AirlinesUA | 76% | 1.2% | 68m | 4,249 |
| Spirit AirlinesNK | 72% | 2.2% | 63m | 2,033 |
| Frontier AirlinesF9Worst | 56% | 2.7% | 85m | 1,886 |
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.