75% of flights from Houston to Birmingham arrived on time over the past 12 months. That is worse than the typical U.S. route. 5% of flights arrived more than an hour late or not at all.
How late?
The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for HOU → BHM: when a flight was late, it was under 45 minutes late 68% of the time. About 1 in 20 flights landed an hour or more late; 0.4% were cancelled outright.
- On time or early75%
- 15–30 min late11%
- 30–60 min late8.1%
- 1–2 hours late3.1%
- 2–3 hours late1.8%
- 3+ hours late0.0%
- Diverted0.0%
- Cancelled0.4%
Share of all 445 scheduled flights, past 12 months, by arrival time against schedule.
By airline
| Airline | Flights | On time | Cancelled | Typical arrival | 1h+ late | Avg when late | Operated by |
|---|---|---|---|---|---|---|---|
| Southwest Airlines | 445 | 75% | 0.4% | −1 min | 4.9% | +46 min | Southwest Airlines |
Airline = the name on the ticket. Regional flights (e.g. "Delta Connection") count under the ticketing airline, and the operator is listed.
Best time of day to fly
On-time rate by scheduled departure hour (local time at HOU). Delays build through the day as late planes knock on, so early flights usually do best.
By month
Each calendar month pooled over 2023–2026. Best: September (89%). Worst: July (64%).
By day of week
| Day | Flights | On time | Cancelled |
|---|---|---|---|
| Monday | 53 | — | — |
| Tuesday | 52 | — | — |
| Wednesday | 53 | — | — |
| Thursday | 52 | — | — |
| Friday | 52 | — | — |
| Saturday | 81 | — | — |
| Sunday | 102 | 71% | 1.0% |
Why flights were late
Share of delay minutes on flights 15+ minutes late, as reported to BTS by the airlines.
Cancellations: airline 1 · weather 1
Month by month
Not enough months with data to draw a trend.
Worst days in the past year
| Date | Flights | On time | Cancelled |
|---|---|---|---|
| Apr 19, 2026 | 3 | 33% | 0 |
| Oct 5, 2025 | 3 | 67% | 0 |
| Sep 7, 2025 | 3 | 67% | 0 |
| May 10, 2026 | 3 | 67% | 0 |
| May 3, 2026 | 3 | 67% | 0 |
Nearby airport alternatives
Other ways to make the same trip, using airports within 60 miles of Houston or Birmingham. IAH → BHM has been 8 points more reliable.
| Route | Flights | On time | Cancelled |
|---|---|---|---|
| HOU → BHM (this route) | 445 | 75% | 0.4% |
| IAH → BHM Houston Bush Intercontinental to Birmingham-Shuttlesworth | 1,600 | 83% | 0.9% |
Questions
How often are flights from HOU to BHM on time?
75% of 445 scheduled flights from Houston, TX to Birmingham, AL arrived within 15 minutes of schedule between September 2025 and August 2026. 0.4% were cancelled.
What month has the most delays from HOU to BHM?
July (64% on time). The best month is September (89%), over 2023–2026.
Related
- BHM → HOU (return)
- Houston Hobby (HOU) delays by hour
- Flights into Birmingham-Shuttlesworth (BHM)
- Southwest Airlines on-time record
- Connecting off this flight? Check the risk
Domestic flights by the airlines that report to the U.S. DOT, plus their regional partners. "On time" means arriving less than 15 minutes after schedule; cancelled and diverted flights count as not on time. Past performance is a guide, not a forecast. Method.