Best Time to Fly DEN to BHM: On-Time Stats by Hour & Airline
Denver International → Birmingham-Shuttlesworth International
Data through July 2026 · Last updated October 18, 2026
1,218 flights were scheduled from Denver (DEN) to Birmingham (BHM) in the last 12 months, and 73.7% of those that flew arrived on time, 3.9 points below the US average of 77.6%.
Among 3 airlines, SkyWest Airlines led with 79.8% on time and Southwest Airlines was last with 65.8%.
Over 24 months, Tuesday was the most reliable day (75% on time) and June the worst month (55%).
The cancellation rate was 0.4% (US average 1.8%).
DEN to BHM on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlines | 79.8% | 60 min | 0.3% | 635 |
| United Airlines | 73.9% | 56 min | 0.0% | 92 |
| Southwest Airlines | 65.8% | 54 min | 0.6% | 491 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DEN to BHM
On-time arrival % by scheduled departure hour (local time), 2,311 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 9am–10am | 80.2% | 1.0% | 97 |
| 10am–11am | 80.3% | 0.3% | 700 |
| 11am–12pm | 88.7% | 1.0% | 98 |
| 1pm–2pm | 66.0% | 0.0% | 50 |
| 2pm–3pm | Limited data | 9 | |
| 3pm–4pm | Limited data | 4 | |
| 4pm–5pm | 70.3% | 0.0% | 74 |
| 5pm–6pm | 71.2% | 0.6% | 853 |
| 6pm–7pm | 67.3% | 0.9% | 108 |
| 7pm–8pm | 49.1% | 1.2% | 165 |
| 8pm–9pm | 50.5% | 1.9% | 103 |
| 9pm–10pm | 71.4% | 2.0% | 50 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DEN to BHM
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 68.4% | -6.0 pts | 0.0% | 38 |
| Christmas & New Year (Dec 20 - Jan 3) | 74.4% | +0.1 pts | 0.0% | 90 |
| Summer peak (Jun 15 - Aug 15) | 63.1% | -11.2 pts | 1.0% | 412 |
| All other days | 74.4% | — | 0.6% | 1,771 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).