OnTimeStats

Historical on-time performance

OKCDEN

Oklahoma City to Denver

495 miData through Dec 2025Source: US DOT · BTS

Flights on OKC–DEN arrive on time 74% of the time over the last 12 months.

On-time rate74%arrived within 15 min
Median delayon timetypical arrival
p90 delay55 min1 in 10 flights is worsetail risk
Cancelled0.6%of scheduled flights

based on 3,075 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • United Airlinesbest
    On-time76%
    Medianon time
    p9020 min
    Cancel0.0%
    Flights93
  • Southwest Airlines
    On-time74%
    Medianon time
    p9055 min
    Cancel0.3%
    Flights1,223
  • SkyWest Airlines
    On-time75%
    Medianon time
    p9050 min
    Cancel0.6%
    Flights1,602
  • Frontier Airlines
    On-time69%
    Medianon time
    p9075 min
    Cancel1.9%
    Flights157

Why flights run late

Delay causes

  • Airline30%
  • Weather9%
  • Air traffic (NAS)38%
  • Late aircraft22%
  • Security0%

Most delay minutes here are attributed to Air traffic (NAS).

Over time

On-time trend

By season

On-time rate by month

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Related pages

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.