Southwest Airlines is the most reliable airline on the ONT to BWI route with a 83% on-time rate. Based on 334 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: ONT to BWI
Ontario to Baltimore — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines83%
ONT to BWI Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 83% | 0.4% | 39m | 334 |
Route Overview
83%
Overall On-Time
39m
Avg Delay
0.3%
Cancel Rate
334
Total Flights
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Data last updated October 2026. Source: Bureau of Transportation Statistics.