Houston (IAH) to Tulsa (TUL): On-Time Performance
Data through July 2026
When you fly IAH to TUL matters as much as anything else about the booking: the route swung from 91% on-time in October 2024 to just 68% in June 2025. Across the full period the route averages 79% on-time against a national 78%. Morning departures also hold up better than evening ones (84% vs 75%), which matters most in the rough months.
- On-time
- 79%
- arrived <15 min late
- Avg delay
- 16 min
- completed flights
- Cancelled
- 0.7%
- Flights/day
- 3.0
- last 12 months
- Duration
- 1h 38m
- scheduled
- Distance
- 429 mi
Best airline from IAH to TUL
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlinesmost reliable | 81% | 17 min | 0.3% | 1,188 |
| United Airlines | 76% | 15 min | 1.6% | 561 |
Monthly on-time trend
Best time to fly from IAH to TUL
Aim for departures around 7 a.m. (85% on-time); avoid 6 p.m. departures (68%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 74% | 22 min |
| Tuesday | 81% | 14 min |
| Wednesdaybest | 84% | 14 min |
| Thursday | 82% | 13 min |
| Friday | 76% | 17 min |
| Saturday | 77% | 18 min |
| Sunday | 81% | 15 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft40%
- Airline operations41%
- National airspace system10%
- Weather9%
Frequently asked questions
- How often are flights from IAH to TUL delayed?
- 21% of IAH–TUL 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 16 minutes.
- Which airline is most reliable from IAH to TUL?
- SkyWest Airlines has the best on-time record on this route at 81%, based on 1,188 flights. 2 airlines flew IAH–TUL frequently enough to compare in this period.
- What is the best time of day to fly from IAH to TUL?
- Departures around 7 a.m. have the best record (85% on-time), while departures around 6 p.m. have the worst (68%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from IAH to TUL?
- The scheduled IAH–TUL flight time averages 1h 38m over 429 miles. Actual arrival times vary — flights on this route land 15+ minutes late 21% of the time.
- How often are IAH to TUL flights cancelled?
- 0.7% 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 IAH to TUL?
- June 2025 was the roughest month in this dataset, with only 68% of arrivals on time. The best was October 2024 at 91%. If your dates are flexible, that 23-point gap is worth planning around.
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Based on 1,749 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.