Historical on-time performance
Nashville to Ontario
1,750 miData through Dec 2025Source: US DOT · BTS
Flights on BNA–ONT arrive on time 66% of the time over the last 12 months.
On-time rate66%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled0.4%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-time66%Median5 minp9045 minCancel0.4%Flights245
Why flights run late
Delay causes
- Airline28%
- Weather6%
- Air traffic (NAS)9%
- Late aircraft57%
- Security0%
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 BNA → ONT
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Middays are the most reliable time of day to fly this route — 85% on time.
- Middays85% on time · p90 20 min · 229 flights
- Afternoons70% on time · p90 40 min · 226 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 64% to 83% on time.
- Wednesdays83% on time · p90 30 min · 66 flights · limited
- Fridays81% on time · p90 30 min · 77 flights · limited
- Thursdays77% on time · p90 30 min · 74 flights · limited
- Saturdays75% on time · p90 50 min · 77 flights · limited
- Sundays75% on time · p90 30 min · 80 flights · limited
- Mondays75% on time · p90 25 min · 75 flights · limited
- Tuesdays64% on time · p90 40 min · 67 flights · limited
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