Southwest Airlines is the most reliable airline on the ONT to DAL route with a 84% on-time rate. Based on 1,365 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: ONT to DAL
Ontario to Dallas — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines84%
ONT to DAL Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 84% | 1.3% | 42m | 1,365 |
Route Overview
83%
Overall On-Time
42m
Avg Delay
1.2%
Cancel Rate
1,365
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.