Historical on-time performance
Ontario to Nashville
1,750 miData through Dec 2025Source: US DOT · BTS
Flights on ONT–BNA arrive on time 85% of the time over the last 12 months.
On-time rate85%arrived within 15 min
p90 delay20 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-time85%Medianon timep9020 minCancel0.0%Flights245
Why flights run late
Delay causes
- Airline19%
- Weather0%
- Air traffic (NAS)23%
- Late aircraft58%
- Security1%
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 (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 86% to 87% on time.
- Mornings87% on time · p90 15 min · 237 flights
- Middays86% on time · p90 20 min · 267 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 81% to 90% on time.
- Tuesdays90% on time · p90 10 min · 67 flights · limited
- Saturdays88% on time · p90 15 min · 77 flights · limited
- Wednesdays88% on time · p90 15 min · 66 flights · limited
- Mondays87% on time · p90 20 min · 75 flights · limited
- Thursdays86% on time · p90 20 min · 74 flights · limited
- Fridays83% on time · p90 20 min · 77 flights · limited
- Sundays81% on time · p90 20 min · 80 flights · limited
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