OnTimeStats

Historical on-time performance

Jacksonville to Chicago

865 miData through Dec 2025Source: US DOT · BTS

Flights on JAX–ORD arrive on time 77% of the time over the last 12 months.

On-time rate77%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled1.8%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 Airways
    On-time62%
    Medianon time
    p9095 min
    Cancel5.9%
    Flights68
  • United Airlines
    On-time78%
    Medianon time
    p9040 min
    Cancel1.0%
    Flights811
  • American Airlines
    On-time75%
    Medianon time
    p9045 min
    Cancel2.5%
    Flights361
  • Envoy Air
    On-time82%
    Medianon time
    p9025 min
    Cancel2.2%
    Flights270

Why flights run late

Delay causes

  • Airline36%
  • Weather2%
  • Air traffic (NAS)28%
  • Late aircraft33%
  • Security0%

Most delay minutes here are attributed to Airline.

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly JAX → ORD

All airlines · rolling 36 months (2023-01 .. 2025-12).

Best time of day

Mornings are the most reliable time of day to fly this route — 88% on time.

  • Mornings88% on time · p90 10 min · 1,833 flights
  • Middays82% on time · p90 30 min · 1,694 flights
  • Afternoons71% on time · p90 55 min · 1,046 flights
  • Evenings65% on time · p90 80 min · 314 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 78% to 84% on time.

  • Tuesdays84% on time · p90 25 min · 649 flights
  • Saturdays82% on time · p90 30 min · 679 flights
  • Thursdays81% on time · p90 30 min · 720 flights
  • Mondays81% on time · p90 35 min · 733 flights
  • Sundays80% on time · p90 40 min · 732 flights
  • Wednesdays79% on time · p90 30 min · 654 flights
  • Fridays78% on time · p90 30 min · 722 flights
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Keep exploring

Related pages

Delay predictorfor this route→JAX airportJacksonville→ORD airportChicago→Spirit Airlines on this routecarrier detail→Spirit Airlinesairline profile→

Methodology

A flight is on time when it arrives within 15 minutes of schedule — the US DOT / BTS standard. Median and p90(the “1-in-10 bad day”) are read from the full arrival-delay distribution, never averaged across periods.

Figures cover a carrier’s own BTS-coded flights. Cells below ~200 flights are flagged as limited data. All numbers are pre-computed from public BTS On-Time Performance data.