Oklahoma City (OKC) to Chicago (MDW): On-Time Performance
Data through July 2026
The calendar drives reliability on OKC–MDW. September 2024 flights landed on schedule 98% of the time, but December 2025 dropped to 65% — a gap of 33 points. Across the full period the route averages 85% on-time against a national 78%. Morning departures also hold up better than evening ones (94% vs 74%), which matters most in the rough months.
- On-time
- 85%
- arrived <15 min late
- Avg delay
- 9 min
- completed flights
- Cancelled
- 1.0%
- Flights/day
- 1.5
- last 12 months
- Duration
- 1h 54m
- scheduled
- Distance
- 691 mi
Monthly on-time trend
Best time to fly from OKC to MDW
Aim for departures around 6 a.m. (95% on-time); avoid 2 p.m. departures (69%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Mondaybest | 93% | 6 min |
| Tuesday | 79% | 8 min |
| Wednesday | 83% | 7 min |
| Thursday | 82% | 11 min |
| Friday | 88% | 7 min |
| Saturday | 90% | 9 min |
| Sunday | 82% | 12 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft54%
- Airline operations20%
- National airspace system16%
- Weather11%
Frequently asked questions
- How often are flights from OKC to MDW delayed?
- 15% of OKC–MDW flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 9 minutes.
- What is the best time of day to fly from OKC to MDW?
- Departures around 6 a.m. have the best record (95% on-time), while departures around 2 p.m. have the worst (69%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from OKC to MDW?
- The scheduled OKC–MDW flight time averages 1h 54m over 691 miles. Actual arrival times vary — flights on this route land 15+ minutes late 15% of the time.
- How often are OKC to MDW flights cancelled?
- 1% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from OKC to MDW?
- December 2025 was the roughest month in this dataset, with only 65% of arrivals on time. The best was September 2024 at 98%. If your dates are flexible, that 33-point gap is worth planning around.
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Based on 1,125 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.