OnTimeStats

Historical on-time performance

Colorado Springs to Dallas

602 miData through Dec 2025Source: US DOT · BTS

Flights on COS–DAL arrive on time 81% of the time over the last 12 months.

On-time rate81%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.8%of scheduled flights

based on 883 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time81%
    Medianon time
    p9035 min
    Cancel0.8%
    Flights883

Why flights run late

Delay causes

  • Airline20%
  • Weather5%
  • Air traffic (NAS)17%
  • 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 COS → DAL

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 — 90% on time.

  • Mornings90% on time · p90 10 min · 1,067 flights
  • Middays81% on time · p90 30 min · 671 flights
  • Afternoons76% on time · p90 40 min · 418 flights
  • Evenings70% on time · p90 55 min · 600 flights

Best day of week

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

  • Saturdays84% on time · p90 25 min · 253 flights
  • Mondays83% on time · p90 30 min · 460 flights
  • Fridays83% on time · p90 30 min · 459 flights
  • Tuesdays82% on time · p90 25 min · 389 flights
  • Sundays81% on time · p90 35 min · 357 flights
  • Wednesdays81% on time · p90 30 min · 386 flights
  • Thursdays78% on time · p90 35 min · 452 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.