OnTimeStats

Historical on-time performance

Fresno to Chicago

1,730 miData through Dec 2025Source: US DOT · BTS

Flights on FAT–ORD arrive on time 62% of the time over the last 12 months.

On-time rate62%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled3.9%of scheduled flights

based on 152 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • United Airlines
    On-time62%
    Median5 min
    p9025 min
    Cancel3.9%
    Flights152

Why flights run late

Delay causes

  • Airline45%
  • Weather7%
  • Air traffic (NAS)40%
  • Late aircraft8%
  • 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 FAT → ORD

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 64% to 67% on time.

  • Overnights67% on time · p90 65 min · 259 flights
  • Mornings64% on time · p90 25 min · 199 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 57% to 80% on time.

  • Tuesdays80% on time · p90 20 min · 56 flights · limited
  • Wednesdays68% on time · p90 40 min · 56 flights · limited
  • Saturdays66% on time · p90 80 min · 62 flights · limited
  • Mondays66% on time · p90 65 min · 70 flights · limited
  • Fridays64% on time · p90 55 min · 74 flights · limited
  • Sundays63% on time · p90 65 min · 68 flights · limited
  • Thursdays57% on time · p90 30 min · 72 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.