Houston (IAH) to Tucson (TUS): On-Time Performance
Data through July 2026
Houston (IAH) to Tucson (TUS) is a thinner route than most in this dataset — 206 departures over the past year, roughly 4 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 80% arrived on time.
- On-time
- 80%
- arrived <15 min late
- Avg delay
- 13 min
- completed flights
- Cancelled
- 2.4%
- Flights/day
- 0.56
- last 12 months
- Duration
- 2h 49m
- scheduled
- Distance
- 937 mi
Best airline from IAH to TUS
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 81% | 10 min | 1.6% | 514 |
| SkyWest Airlines | 78% | 19 min | 4.1% | 244 |
Monthly on-time trend
Best time to fly from IAH to TUS
Aim for departures around 9 a.m. (89% on-time); avoid 8 p.m. departures (75%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 84% | 7 min |
| Tuesdaybest | 87% | 7 min |
| Wednesday | 77% | 13 min |
| Thursday | 74% | 22 min |
| Friday | 84% | 11 min |
| Saturday | 83% | 13 min |
| Sunday | 74% | 17 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft29%
- Airline operations49%
- National airspace system11%
- Weather12%
Frequently asked questions
- How often are flights from IAH to TUS delayed?
- 20% of IAH–TUS 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 13 minutes.
- Which airline is most reliable from IAH to TUS?
- United Airlines has the best on-time record on this route at 81%, based on 514 flights. 2 airlines flew IAH–TUS frequently enough to compare in this period.
- What is the best time of day to fly from IAH to TUS?
- Departures around 9 a.m. have the best record (89% on-time), while departures around 8 p.m. have the worst (75%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from IAH to TUS?
- The scheduled IAH–TUS flight time averages 2h 49m over 937 miles. Actual arrival times vary — flights on this route land 15+ minutes late 20% of the time.
- How often are IAH to TUS flights cancelled?
- 2.4% 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 IAH to TUS?
- July 2024 was the roughest month in this dataset, with only 53% of arrivals on time. The best was January 2026 at 90%. If your dates are flexible, that 37-point gap is worth planning around.
Explore related pages
More routes from IAH
Other ways to fly to Tucson (TUS)
Related guides
Based on 758 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.