Southwest Airlines is the most reliable airline on the DAL to IAH route with a 80% on-time rate. Based on 2,204 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: DAL to IAH
Dallas to Houston — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines80%
DAL to IAH Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 80% | 1.7% | 60m | 2,204 |
Route Overview
81%
Overall On-Time
58m
Avg Delay
1.8%
Cancel Rate
2,204
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.