Best Time to Fly IAH to OKC: On-Time Stats by Hour & Airline
George Bush Intercontinental/Houston → Okc Will Rogers International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 79.6% of Houston (IAH) to Oklahoma City (OKC) flights arrived on time (1,285 scheduled flights). That is 2.0 points above the national average of 77.6%.
United Airlines was the most punctual of the 2 airlines on the route at 81.5%, while SkyWest Airlines trailed at 79.1%.
October has been the best month (86% on time) and Saturday the weakest day of the week (74%).
1.2% of flights were cancelled, versus 1.8% nationally.
IAH to OKC 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 |
|---|---|---|---|---|
| United Airlines | 81.5% | 62 min | 1.6% | 308 |
| SkyWest Airlines | 79.1% | 87 min | 1.0% | 977 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly IAH to OKC
On-time arrival % by scheduled departure hour (local time), 2,554 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 85.7% | 0.3% | 338 |
| 9am–10am | 91.5% | 0.0% | 71 |
| 11am–12pm | 73.5% | 0.0% | 34 |
| 12pm–1pm | 71.3% | 0.0% | 122 |
| 2pm–3pm | 78.5% | 0.6% | 174 |
| 4pm–5pm | 85.3% | 1.9% | 257 |
| 5pm–6pm | Limited data | 4 | |
| 6pm–7pm | 70.7% | 1.9% | 512 |
| 7pm–8pm | 73.6% | 0.9% | 333 |
| 8pm–9pm | 65.8% | 2.5% | 235 |
| 9pm–10pm | 78.9% | 1.3% | 474 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on IAH to OKC
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) | 61.5% | -17.0 pts | 0.0% | 39 |
| Christmas & New Year (Dec 20 - Jan 3) | 67.2% | -11.3 pts | 3.3% | 60 |
| Summer peak (Jun 15 - Aug 15) | 73.0% | -5.5 pts | 1.2% | 564 |
| All other days | 78.5% | — | 1.2% | 1,891 |
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).