Tulsa (TUL) to Houston (IAH): On-Time Performance
Data through July 2026
When you fly TUL to IAH matters as much as anything else about the booking: the route swung from 97% on-time in September 2024 to just 73% in June 2025. Across the full period the route averages 83% on-time against a national 78%. Morning departures also hold up better than evening ones (89% vs 78%), which matters most in the rough months.
- On-time
- 83%
- arrived <15 min late
- Avg delay
- 15 min
- completed flights
- Cancelled
- 1.1%
- Flights/day
- 3.0
- last 12 months
- Duration
- 1h 45m
- scheduled
- Distance
- 429 mi
Best airline from TUL to IAH
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 90% | 9 min | 1.6% | 564 |
| SkyWest Airlines | 80% | 18 min | 0.8% | 1,184 |
Monthly on-time trend
Best time to fly from TUL to IAH
Aim for departures around 6 a.m. (95% on-time); avoid 3 p.m. departures (74%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 79% | 19 min |
| Tuesday | 83% | 12 min |
| Wednesday | 85% | 12 min |
| Thursdaybest | 89% | 9 min |
| Friday | 82% | 16 min |
| Saturday | 82% | 16 min |
| Sunday | 83% | 21 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft32%
- Airline operations32%
- National airspace system24%
- Weather11%
Frequently asked questions
- How often are flights from TUL to IAH delayed?
- 17% of TUL–IAH 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 15 minutes.
- Which airline is most reliable from TUL to IAH?
- United Airlines has the best on-time record on this route at 90%, based on 564 flights. 2 airlines flew TUL–IAH frequently enough to compare in this period.
- What is the best time of day to fly from TUL to IAH?
- Departures around 6 a.m. have the best record (95% on-time), while departures around 3 p.m. have the worst (74%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from TUL to IAH?
- The scheduled TUL–IAH flight time averages 1h 45m over 429 miles. Actual arrival times vary — flights on this route land 15+ minutes late 17% of the time.
- How often are TUL to IAH flights cancelled?
- 1.1% 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 TUL to IAH?
- June 2025 was the roughest month in this dataset, with only 73% of arrivals on time. The best was September 2024 at 97%. If your dates are flexible, that 24-point gap is worth planning around.
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Based on 1,748 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.