Historical on-time performance
Chicago to Jacksonville
864 miData through Dec 2025Source: US DOT · BTS
Flights on ORD–JAX arrive on time 71% of the time over the last 12 months.
On-time rate71%arrived within 15 min
p90 delay60 min1 in 10 flights is worse (tail risk)
Cancelled1.4%of scheduled flights
based on 1,510 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- Republic AirwaysOn-time72%Medianon timep9075 minCancel1.5%Flights68
- United AirlinesOn-time74%Medianon timep9055 minCancel0.9%Flights810
- Envoy AirOn-time77%Medianon timep9045 minCancel1.8%Flights271
- American AirlinesOn-time63%Medianon timep9095 minCancel2.2%Flights361
Why flights run late
Delay causes
- Airline23%
- Weather3%
- Air traffic (NAS)15%
- Late aircraft59%
- 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 ORD → JAX
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 67% to 84% on time.
- Mornings84% on time · p90 25 min · 1,642 flights
- Afternoons83% on time · p90 30 min · 469 flights
- Middays77% on time · p90 50 min · 881 flights
- Evenings69% on time · p90 65 min · 1,809 flights
- Overnights67% on time · p90 55 min · 88 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 73% to 82% on time.
- Tuesdays82% on time · p90 35 min · 651 flights
- Saturdays79% on time · p90 45 min · 676 flights
- Wednesdays78% on time · p90 35 min · 655 flights
- Mondays77% on time · p90 50 min · 735 flights
- Thursdays77% on time · p90 45 min · 722 flights
- Sundays73% on time · p90 50 min · 732 flights
- Fridays73% on time · p90 50 min · 719 flights
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