Southwest Airlines is the most reliable airline on the HOU to ONT route with a 81% on-time rate. Based on 1,015 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: HOU to ONT
Houston to Ontario — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines81%
HOU to ONT Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 81% | 0.4% | 54m | 1,015 |
Route Overview
81%
Overall On-Time
54m
Avg Delay
0.4%
Cancel Rate
1,015
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.