Historical on-time performance
Ontario to Nashville
1,750 miData through May 2026Source: US DOT · BTS
Flights on ONT–BNA arrive on time 77% of the time over the last 12 months.
On-time rate77%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights
based on 245 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time77%Medianon timep9025 minCancel0.0%Flights245
Why flights run late
Delay causes
- Airline34%
- Weather0%
- Air traffic (NAS)18%
- Late aircraft45%
- Security3%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly ONT → BNA
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 82% to 86% on time.
- Mornings86% on time · p90 20 min · 313 flights
- Middays82% on time · p90 20 min · 314 flights
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