OnTimeStats

Historical on-time performance

Chicago to Oklahoma City

693 miData through Dec 2025Source: US DOT · BTS

Flights on ORD–OKC 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)
Cancelled1.9%of scheduled flights

based on 2,390 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Too close to call — no single carrier is clearly more on-time here.

  • Republic Airways
    On-time82%
    Medianon time
    p9030 min
    Cancel2.8%
    Flights249
  • SkyWest Airlines
    On-time67%
    Medianon time
    p9090 min
    Cancel1.8%
    Flights1,848
  • Envoy Air
    On-time76%
    Medianon time
    p9040 min
    Cancel1.4%
    Flights293

Why flights run late

Delay causes

  • Airline40%
  • Weather19%
  • Air traffic (NAS)18%
  • Late aircraft23%
  • Security0%

Most delay minutes here are attributed to Airline.

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 (2023-01 .. 2025-12).

Best time of day

On-time rates are fairly even by time of day on this route — ranging from 67% to 80% on time.

  • Mornings80% on time · p90 35 min · 1,692 flights
  • Middays78% on time · p90 50 min · 1,073 flights
  • Afternoons73% on time · p90 70 min · 1,361 flights
  • Overnights70% on time · p90 75 min · 492 flights
  • Evenings67% on time · p90 65 min · 1,668 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 69% to 77% on time.

  • Mondays77% on time · p90 45 min · 952 flights
  • Saturdays75% on time · p90 50 min · 795 flights
  • Tuesdays75% on time · p90 55 min · 852 flights
  • Wednesdays74% on time · p90 65 min · 862 flights
  • Fridays74% on time · p90 45 min · 948 flights
  • Thursdays73% on time · p90 65 min · 938 flights
  • Sundays69% on time · p90 70 min · 939 flights
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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.