Birmingham (BHM) to Denver (DEN): On-Time Performance
Data through July 2026
When you fly BHM to DEN matters as much as anything else about the booking: the route swung from 95% on-time in October 2024 to just 69% 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 44%), which matters most in the rough months.
- On-time
- 83%
- arrived <15 min late
- Avg delay
- 13 min
- completed flights
- Cancelled
- 0.4%
- Flights/day
- 3.3
- last 12 months
- Duration
- 3h 15m
- scheduled
- Distance
- 1,083 mi
Best airline from BHM to DEN
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlinesmost reliable | 85% | 12 min | 0.6% | 1,426 |
| Southwest Airlines | 81% | 13 min | 0.1% | 886 |
| United Airlines | 77% | 19 min | 0.0% | 92 |
Monthly on-time trend
Best time to fly from BHM to DEN
Aim for departures around 6 a.m. (93% on-time); avoid 6 p.m. departures (41%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 81% | 15 min |
| Tuesday | 83% | 12 min |
| Wednesday | 85% | 8 min |
| Thursday | 81% | 13 min |
| Fridaybest | 85% | 11 min |
| Saturday | 84% | 15 min |
| Sunday | 84% | 16 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft25%
- Airline operations40%
- National airspace system33%
- Weather2%
Frequently asked questions
- How often are flights from BHM to DEN delayed?
- 17% of BHM–DEN 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 BHM to DEN?
- SkyWest Airlines has the best on-time record on this route at 85%, based on 1,426 flights. 3 airlines flew BHM–DEN frequently enough to compare in this period.
- What is the best time of day to fly from BHM to DEN?
- Departures around 6 a.m. have the best record (93% on-time), while departures around 6 p.m. have the worst (41%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from BHM to DEN?
- The scheduled BHM–DEN flight time averages 3h 15m over 1,083 miles. Actual arrival times vary — flights on this route land 15+ minutes late 17% of the time.
- How often are BHM to DEN flights cancelled?
- 0.4% 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 BHM to DEN?
- June 2025 was the roughest month in this dataset, with only 69% of arrivals on time. The best was October 2024 at 95%. If your dates are flexible, that 26-point gap is worth planning around.
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Based on 2,404 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.