OnTimeStats

Historical on-time performance

Dallas-Fort Worth to Chicago

797 miData through Dec 2025Source: US DOT · BTS

Flights on DFW–MDW arrive on time 69% of the time over the last 12 months.

On-time rate69%arrived within 15 min
p90 delay75 min1 in 10 flights is worse (tail risk)
Cancelled2.4%of scheduled flights

based on 127 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Frontier Airlines
    On-time69%
    Medianon time
    p9075 min
    Cancel2.4%
    Flights127

Why flights run late

Delay causes

  • Airline10%
  • Weather3%
  • Air traffic (NAS)5%
  • Late aircraft82%
  • 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 DFW → MDW

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 — 76% on time.

  • Mornings76% on time · p90 45 min · 325 flights
  • Middays68% on time · p90 90 min · 380 flights
  • Afternoons64% on time · p90 85 min · 100 flights · limited
  • Overnights64% on time · p90 90 min · 255 flights
  • Evenings55% on time · p90 105 min · 286 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 61% to 74% on time.

  • Saturdays74% on time · p90 70 min · 186 flights · limited
  • Tuesdays70% on time · p90 40 min · 166 flights · limited
  • Fridays69% on time · p90 65 min · 212 flights
  • Thursdays63% on time · p90 95 min · 208 flights
  • Mondays63% on time · p90 105 min · 208 flights
  • Sundays63% on time · p90 90 min · 211 flights
  • Wednesdays61% on time · p90 85 min · 155 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.