Oklahoma City (OKC) to Chicago (ORD): On-Time Performance
Data through July 2026
When you fly OKC to ORD matters as much as anything else about the booking: the route swung from 87% on-time in October 2024 to just 67% in March 2026. Across the full period the route averages 77% on-time against a national 78%. Morning departures also hold up better than evening ones (82% vs 61%), which matters most in the rough months.
- On-time
- 77%
- arrived <15 min late
- Avg delay
- 21 min
- completed flights
- Cancelled
- 1.9%
- Flights/day
- 7.2
- last 12 months
- Duration
- 2h 17m
- scheduled
- Distance
- 693 mi
Best airline from OKC to ORD
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airwaysmost reliable | 89% | 8 min | 1.3% | 557 |
| Envoy Air | 80% | 17 min | 1.0% | 616 |
| SkyWest Airlines | 75% | 24 min | 2.1% | 3,896 |
Monthly on-time trend
Best time to fly from OKC to ORD
Aim for departures around 5 a.m. (88% on-time); avoid 5 p.m. departures (59%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 78% | 25 min |
| Tuesday | 81% | 17 min |
| Wednesday | 77% | 19 min |
| Thursday | 79% | 19 min |
| Friday | 74% | 22 min |
| Saturdaybest | 82% | 17 min |
| Sunday | 71% | 26 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft18%
- Airline operations50%
- National airspace system23%
- Weather9%
Frequently asked questions
- How often are flights from OKC to ORD delayed?
- 23% of OKC–ORD 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 21 minutes.
- Which airline is most reliable from OKC to ORD?
- Republic Airways has the best on-time record on this route at 89%, based on 557 flights. 3 airlines flew OKC–ORD frequently enough to compare in this period.
- What is the best time of day to fly from OKC to ORD?
- Departures around 5 a.m. have the best record (88% on-time), while departures around 5 p.m. have the worst (59%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from OKC to ORD?
- The scheduled OKC–ORD flight time averages 2h 17m over 693 miles. Actual arrival times vary — flights on this route land 15+ minutes late 23% of the time.
- How often are OKC to ORD flights cancelled?
- 1.9% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What is the worst month to fly from OKC to ORD?
- March 2026 was the roughest month in this dataset, with only 67% of arrivals on time. The best was October 2024 at 87%. If your dates are flexible, that 20-point gap is worth planning around.
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Based on 5,073 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.