OnTimeStats

Historical on-time performance

Tulsa to Chicago

583 miData through Dec 2025Source: US DOT · BTS

Flights on TUL–MDW 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)
Cancelled0.4%of scheduled flights

based on 260 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time85%
    Medianon time
    p9025 min
    Cancel0.4%
    Flights260

Why flights run late

Delay causes

  • Airline21%
  • Weather7%
  • Air traffic (NAS)19%
  • Late aircraft53%
  • 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 TUL → MDW

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 79% to 92% on time.

  • Mornings92% on time · p90 5 min · 225 flights
  • Middays88% on time · p90 15 min · 408 flights
  • Afternoons82% on time · p90 25 min · 663 flights
  • Evenings79% on time · p90 20 min · 67 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 81% to 90% on time.

  • Tuesdays90% on time · p90 10 min · 201 flights
  • Saturdays90% on time · p90 10 min · 136 flights · limited
  • Mondays86% on time · p90 20 min · 222 flights
  • Wednesdays85% on time · p90 15 min · 201 flights
  • Thursdays84% on time · p90 25 min · 220 flights
  • Sundays84% on time · p90 25 min · 161 flights · limited
  • Fridays81% on time · p90 30 min · 222 flights
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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.