Houston (IAH) to Birmingham (BHM): On-Time Performance
Data through July 2026
Houston (IAH) to Birmingham (BHM) is a thinner route than most in this dataset — 92 departures over the past year, roughly 2 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 73% arrived on time, noticeably below the national average of 78%.
- On-time
- 73%
- arrived <15 min late
- Avg delay
- 22 min
- completed flights
- Cancelled
- 2.7%
- Flights/day
- 0.25
- last 12 months
- Duration
- 1h 55m
- scheduled
- Distance
- 562 mi
Monthly on-time trend
Best time to fly from IAH to BHM
Aim for departures around 12 p.m. (86% on-time); avoid 7 p.m. departures (51%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 61% | 31 min |
| Tuesday | 74% | 17 min |
| Wednesday | 67% | 24 min |
| Thursday | 83% | 11 min |
| Friday | 63% | 28 min |
| Saturday | 79% | 29 min |
| Sundaybest | 85% | 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 aircraft38%
- Airline operations37%
- National airspace system10%
- Weather15%
Frequently asked questions
- How often are flights from IAH to BHM delayed?
- 27% of IAH–BHM 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 22 minutes.
- What is the best time of day to fly from IAH to BHM?
- Departures around 12 p.m. have the best record (86% on-time), while departures around 7 p.m. have the worst (51%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from IAH to BHM?
- The scheduled IAH–BHM flight time averages 1h 55m over 562 miles. Actual arrival times vary — flights on this route land 15+ minutes late 27% of the time.
- How often are IAH to BHM flights cancelled?
- 2.7% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What day of the week is most reliable for IAH to BHM?
- Sunday flights have the best record at 85% on-time. Day-of-week differences on this route are meaningful — Monday trails at 61%.
Explore related pages
More routes from IAH
Other ways to fly to Birmingham (BHM)
Related guides
Based on 402 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.