Historical on-time performance
Oklahoma City to Chicago
691 miData through Dec 2025Source: US DOT · BTS
Flights on OKC–MDW arrive on time 84% of the time over the last 12 months.
On-time rate84%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled0.2%of scheduled flights
based on 445 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time84%Medianon timep9030 minCancel0.2%Flights445
Why flights run late
Delay causes
- Airline12%
- Weather12%
- Air traffic (NAS)14%
- Late aircraft61%
- 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 OKC → MDW
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 — 93% on time.
- Mornings93% on time · p90 5 min · 677 flights
- Middays87% on time · p90 15 min · 154 flights · limited
- Afternoons78% on time · p90 30 min · 560 flights
- Evenings69% on time · p90 60 min · 174 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 80% to 88% on time.
- Mondays88% on time · p90 15 min · 252 flights
- Wednesdays86% on time · p90 20 min · 202 flights
- Fridays85% on time · p90 20 min · 251 flights
- Saturdays85% on time · p90 25 min · 182 flights · limited
- Thursdays84% on time · p90 25 min · 248 flights
- Sundays81% on time · p90 30 min · 227 flights
- Tuesdays80% on time · p90 25 min · 203 flights
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