OnTimeStats

Historical on-time performance

Chicago to Pensacola

794 miData through Dec 2025Source: US DOT · BTS

Flights on ORD–PNS arrive on time 85% of the time over the last 12 months.

On-time rate85%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled0.6%of scheduled flights

based on 337 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • United Airlines
    On-time85%
    Medianon time
    p9025 min
    Cancel0.6%
    Flights337

Why flights run late

Delay causes

  • Airline31%
  • Weather3%
  • Air traffic (NAS)15%
  • Late aircraft51%
  • 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 → PNS

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 81% to 82% on time.

  • Middays82% on time · p90 35 min · 1,143 flights
  • Mornings81% on time · p90 25 min · 160 flights · limited

Best day of week

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

  • Mondays84% on time · p90 40 min · 170 flights · limited
  • Wednesdays84% on time · p90 20 min · 168 flights · limited
  • Saturdays83% on time · p90 35 min · 262 flights
  • Fridays83% on time · p90 25 min · 168 flights · limited
  • Thursdays82% on time · p90 50 min · 171 flights · limited
  • Tuesdays82% on time · p90 40 min · 170 flights · limited
  • Sundays78% on time · p90 35 min · 196 flights · limited
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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.