Tucson (TUS) to Houston (IAH): On-Time Performance
Data through July 2026
Tucson (TUS) to Houston (IAH) 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, 89% arrived on time, comfortably above the national average of 78%.
- On-time
- 89%
- arrived <15 min late
- Avg delay
- 9 min
- completed flights
- Cancelled
- 1.7%
- Flights/day
- 0.56
- last 12 months
- Duration
- 2h 28m
- scheduled
- Distance
- 937 mi
Best airline from TUS to IAH
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 91% | 8 min | 1.6% | 515 |
| SkyWest Airlines | 85% | 11 min | 2.1% | 243 |
Monthly on-time trend
Best time to fly from TUS to IAH
Aim for departures around 6 a.m. (94% on-time); avoid 11 a.m. departures (78%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 87% | 8 min |
| Tuesday | 91% | 15 min |
| Wednesday | 93% | 5 min |
| Thursday | 87% | 10 min |
| Friday | 87% | 7 min |
| Saturdaybest | 95% | 5 min |
| Sunday | 86% | 11 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 operations44%
- National airspace system19%
- Weather8%
Frequently asked questions
- How often are flights from TUS to IAH delayed?
- 11% of TUS–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 9 minutes.
- Which airline is most reliable from TUS to IAH?
- United Airlines has the best on-time record on this route at 91%, based on 515 flights. 2 airlines flew TUS–IAH frequently enough to compare in this period.
- What is the best time of day to fly from TUS to IAH?
- Departures around 6 a.m. have the best record (94% on-time), while departures around 11 a.m. have the worst (78%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from TUS to IAH?
- The scheduled TUS–IAH flight time averages 2h 28m over 937 miles. Actual arrival times vary — flights on this route land 15+ minutes late 11% of the time.
- How often are TUS to IAH flights cancelled?
- 1.7% 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 TUS to IAH?
- July 2024 was the roughest month in this dataset, with only 81% of arrivals on time. The best was October 2025 at 100%. If your dates are flexible, that 19-point gap is worth planning around.
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Based on 758 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.