Historical on-time performance
Charlotte to Ontario
2,078 miData through May 2026Source: US DOT · BTS
Flights on CLT–ONT arrive on time 74% of the time over the last 12 months.
On-time rate74%arrived within 15 min
p90 delay65 min1 in 10 flights is worse (tail risk)
Cancelled0.7%of scheduled flights
based on 276 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- American AirlinesOn-time74%Medianon timep9065 minCancel0.7%Flights276
Why flights run late
Delay causes
- Airline28%
- Weather15%
- Air traffic (NAS)10%
- Late aircraft46%
- Security1%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather100%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 2 cancellations with a reported cause (BTS reports causes from June 2003).
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 (2023-06 .. 2026-05).
Best day of week
On-time rates are fairly even by day on this route — ranging from 65% to 78% on time.
- Tuesdays78% on time · p90 60 min · 144 flights · limited
- Wednesdays72% on time · p90 45 min · 144 flights · limited
- Saturdays71% on time · p90 70 min · 144 flights · limited
- Fridays69% on time · p90 55 min · 147 flights · limited
- Thursdays68% on time · p90 50 min · 145 flights · limited
- Mondays67% on time · p90 80 min · 145 flights · limited
- Sundays65% on time · p90 90 min · 147 flights · limited
Keep exploring