OnTimeStats

Historical on-time performance

Chicago to Oklahoma City

693 miData through May 2026Source: US DOT · BTS

Flights on ORD–OKC arrive on time 65% of the time over the last 12 months.

On-time rate65%arrived within 15 min
p90 delay95 min1 in 10 flights is worse (tail risk)
Cancelled2.6%of scheduled flights

based on 2,465 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.

  • Republic Airways
    On-time81%
    Medianon time
    p9045 min
    Cancel0.7%
    Flights144
  • SkyWest Airlines
    On-time64%
    Medianon time
    p90100 min
    Cancel2.7%
    Flights2,321

Why flights run late

Delay causes

  • Airline39%
  • Weather21%
  • Air traffic (NAS)17%
  • Late aircraft24%
  • Security0%

Most delay minutes here are attributed to Airline.

When flights don't go

Why flights were cancelled

  • Airline5%
  • Weather81%
  • Air traffic (NAS)14%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 64 cancellations with a reported cause (BTS reports causes from June 2003).

Over time

On-time trend

By season

On-time rate by month

When to fly

Best time to fly ORD → OKC

All airlines · rolling 36 months (2023-06 .. 2026-05).

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 66% to 79% on time.

  • Mornings79% on time · p90 40 min · 1,823 flights
  • Middays78% on time · p90 50 min · 929 flights
  • Afternoons71% on time · p90 70 min · 1,730 flights
  • Overnights70% on time · p90 75 min · 504 flights
  • Evenings66% on time · p90 80 min · 1,667 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 69% to 75% on time.

  • Saturdays75% on time · p90 50 min · 857 flights
  • Mondays74% on time · p90 55 min · 993 flights
  • Thursdays74% on time · p90 65 min · 993 flights
  • Tuesdays74% on time · p90 60 min · 897 flights
  • Wednesdays73% on time · p90 60 min · 907 flights
  • Fridays71% on time · p90 55 min · 1,004 flights
  • Sundays69% on time · p90 75 min · 1,002 flights

Keep exploring

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.