OnTimeStats

Historical on-time performance

El Paso to Chicago

1,237 miData through Dec 2025Source: US DOT · BTS

Flights on ELP–MDW arrive on time 86% of the time over the last 12 months.

On-time rate86%arrived within 15 min
p90 delay20 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights

based on 213 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time86%
    Medianon time
    p9020 min
    Cancel0.5%
    Flights213

Why flights run late

Delay causes

  • Airline23%
  • Weather6%
  • Air traffic (NAS)13%
  • Late aircraft58%
  • 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 ELP → 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 83% to 93% on time.

  • Mornings93% on time · p90 5 min · 101 flights · limited
  • Middays87% on time · p90 15 min · 347 flights
  • Afternoons83% on time · p90 45 min · 90 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 80% to 95% on time.

  • Mondays95% on time · p90 5 min · 79 flights · limited
  • Tuesdays93% on time · p90 10 min · 75 flights · limited
  • Fridays90% on time · p90 20 min · 79 flights · limited
  • Saturdays89% on time · p90 10 min · 73 flights · limited
  • Sundays84% on time · p90 35 min · 79 flights · limited
  • Thursdays82% on time · p90 30 min · 79 flights · limited
  • Wednesdays80% on time · p90 25 min · 74 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.