Historical on-time performance
Charlotte to Ontario
2,078 miData through Dec 2025Source: US DOT · BTS
Flights on CLT–ONT arrive on time 73% of the time over the last 12 months.
On-time rate73%arrived within 15 min
p90 delay75 min1 in 10 flights is worse (tail risk)
Cancelled0.7%of scheduled flights
based on 275 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- American AirlinesOn-time73%Medianon timep9075 minCancel0.7%Flights275
Why flights run late
Delay causes
- Airline24%
- Weather14%
- Air traffic (NAS)9%
- Late aircraft52%
- 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 CLT → ONT
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 59% to 68% on time.
- Evenings68% on time · p90 65 min · 877 flights
- Overnights59% on time · p90 95 min · 85 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 63% to 78% on time.
- Tuesdays78% on time · p90 55 min · 142 flights · limited
- Wednesdays73% on time · p90 45 min · 142 flights · limited
- Fridays65% on time · p90 55 min · 143 flights · limited
- Saturdays65% on time · p90 75 min · 140 flights · limited
- Thursdays65% on time · p90 45 min · 141 flights · limited
- Mondays64% on time · p90 95 min · 143 flights · limited
- Sundays63% on time · p90 95 min · 144 flights · limited
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