Southwest Airlines is the most reliable airline on the IAH to DAL route with a 84% on-time rate. Based on 2,232 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: IAH to DAL
Houston to Dallas — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines84%
IAH to DAL Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 84% | 2.3% | 63m | 2,232 |
Route Overview
85%
Overall On-Time
63m
Avg Delay
2.5%
Cancel Rate
2,232
Total Flights
Flying out of IAH? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Data last updated October 2026. Source: Bureau of Transportation Statistics.