Best Time to Fly OKC to ORD: On-Time Stats by Hour & Airline
Okc Will Rogers International → Chicago O'Hare International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 75.1% of Oklahoma City (OKC) to Chicago (ORD) flights arrived on time (2,616 scheduled flights). That is 2.5 points below the national average of 77.6%.
Republic Airways was the most punctual of the 2 airlines on the route at 87.9%, while SkyWest Airlines trailed at 73.8%.
April has been the best month (83% on time) and Sunday the weakest day of the week (71%).
3.0% of flights were cancelled, versus 1.8% nationally.
OKC to ORD on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airways | 87.9% | 66 min | 1.4% | 211 |
| SkyWest Airlines | 73.8% | 93 min | 3.2% | 2,375 |
| United Airlines | Limited data | 4 | ||
| Envoy Air | Limited data | 26 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly OKC to ORD
On-time arrival % by scheduled departure hour (local time), 4,890 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 88.0% | 1.7% | 237 |
| 6am–7am | 81.2% | 2.0% | 250 |
| 7am–8am | 82.6% | 1.5% | 884 |
| 8am–9am | 78.2% | 2.6% | 153 |
| 9am–10am | 82.0% | 1.0% | 196 |
| 10am–11am | 81.0% | 1.0% | 582 |
| 11am–12pm | 76.4% | 2.4% | 170 |
| 12pm–1pm | 78.4% | 1.2% | 245 |
| 1pm–2pm | 76.9% | 1.3% | 702 |
| 2pm–3pm | 86.8% | 0.7% | 298 |
| 3pm–4pm | 88.5% | 0.0% | 78 |
| 4pm–5pm | 71.4% | 2.2% | 278 |
| 5pm–6pm | 59.6% | 4.1% | 459 |
| 6pm–7pm | 64.8% | 5.2% | 136 |
| 7pm–8pm | 63.8% | 5.0% | 222 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on OKC to ORD
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 62.9% | -16.4 pts | 8.2% | 97 |
| Christmas & New Year (Dec 20 - Jan 3) | 82.9% | +3.6 pts | 0.6% | 165 |
| Summer peak (Jun 15 - Aug 15) | 70.6% | -8.7 pts | 1.6% | 917 |
| All other days | 79.3% | — | 1.9% | 3,711 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).