Historical on-time performance
Houston to Oklahoma City
395 miData through Dec 2025Source: US DOT · BTS
Flights on IAH–OKC arrive on time 73% of the time over the last 12 months.
On-time rate73%arrived within 15 min
p90 delay70 min1 in 10 flights is worse (tail risk)
Cancelled1.0%of scheduled flights
based on 1,353 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesbestOn-time85%Medianon timep9025 minCancel0.0%Flights61
- SkyWest AirlinesOn-time73%Medianon timep9075 minCancel1.0%Flights1,292
Why flights run late
Delay causes
- Airline36%
- Weather13%
- Air traffic (NAS)13%
- Late aircraft38%
- 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 IAH → OKC
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 — 85% on time.
- Mornings85% on time · p90 25 min · 915 flights
- Afternoons78% on time · p90 50 min · 546 flights
- Middays72% on time · p90 80 min · 151 flights · limited
- Overnights70% on time · p90 65 min · 640 flights
- Evenings65% on time · p90 80 min · 651 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 69% to 78% on time.
- Thursdays78% on time · p90 45 min · 434 flights
- Tuesdays78% on time · p90 50 min · 418 flights
- Saturdays77% on time · p90 50 min · 367 flights
- Fridays75% on time · p90 60 min · 420 flights
- Sundays75% on time · p90 60 min · 406 flights
- Wednesdays75% on time · p90 55 min · 427 flights
- Mondays69% on time · p90 70 min · 431 flights
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