OnTimeStats

Historical on-time performance

St. Louis to Oklahoma City

462 miData through May 2026Source: US DOT · BTS

Flights on STL–OKC arrive on time 79% of the time over the last 12 months.

On-time rate79%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled1.1%of scheduled flights

based on 524 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time79%
    Medianon time
    p9030 min
    Cancel1.1%
    Flights524

Why flights run late

Delay causes

  • Airline24%
  • Weather1%
  • Air traffic (NAS)5%
  • Late aircraft70%
  • Security0%

Most delay minutes here are attributed to Late aircraft.

When flights don't go

Why flights were cancelled

  • Airline0%
  • Weather83%
  • Air traffic (NAS)17%
  • Security0%

Most cancellations here are attributed to Weather. Shares are among 6 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 STL → 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 65% to 89% on time.

  • Middays89% on time · p90 15 min · 764 flights
  • Mornings87% on time · p90 15 min · 231 flights
  • Overnights65% on time · p90 55 min · 870 flights

Best day of week

On-time rates are fairly even by day on this route — ranging from 72% to 81% on time.

  • Wednesdays81% on time · p90 25 min · 288 flights
  • Saturdays81% on time · p90 20 min · 186 flights · limited
  • Tuesdays80% on time · p90 30 min · 287 flights
  • Thursdays78% on time · p90 30 min · 288 flights
  • Mondays76% on time · p90 30 min · 288 flights
  • Fridays75% on time · p90 40 min · 289 flights
  • Sundays72% on time · p90 45 min · 288 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.