Southwest Airlines is the most reliable airline on the BNA to ONT route with a 75% on-time rate. Based on 691 flights tracked.
Source: Bureau of Transportation Statistics. Updated October 2026.Best Airline: BNA to ONT
Nashville to Ontario — airline reliability comparison
On-Time Rate by Airline
Southwest Airlines75%
BNA to ONT Airline Comparison
| Airline | On-Time % | Cancel % | Avg Delay | Flights |
|---|---|---|---|---|
| Southwest AirlinesWNBest | 75% | 0.4% | 53m | 691 |
Route Overview
74%
Overall On-Time
52m
Avg Delay
0.3%
Cancel Rate
691
Total Flights
Flying out of BNA? We'll brief you.
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Data last updated October 2026. Source: Bureau of Transportation Statistics.