Best Time to Fly DTW to BHM: On-Time Stats by Hour & Airline
Detroit Metro Wayne County → Birmingham-Shuttlesworth International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 71.9% of Detroit (DTW) to Birmingham (BHM) flights arrived on time (312 scheduled flights). That is 5.7 points below the national average of 77.6%.
Delta Air Lines was the most punctual of the 2 airlines on the route at 77.0%, while SkyWest Airlines trailed at 68.8%.
May has been the best month (85% on time) and Sunday the weakest day of the week (67%).
1.6% of flights were cancelled, versus 1.8% nationally.
DTW 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 |
|---|---|---|---|---|
| Delta Air Lines | 77.0% | 72 min | 0.9% | 114 |
| SkyWest Airlines | 68.8% | 85 min | 2.1% | 188 |
| Spirit Airlines | Limited data | 10 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DTW to BHM
On-time arrival % by scheduled departure hour (local time), 799 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | 79.5% | 0.0% | 118 |
| 10am–11am | Limited data | 18 | |
| 11am–12pm | Limited data | 18 | |
| 12pm–1pm | Limited data | 1 | |
| 2pm–3pm | 70.1% | 0.0% | 117 |
| 3pm–4pm | 65.9% | 1.7% | 173 |
| 4pm–5pm | 70.0% | 0.0% | 50 |
| 7pm–8pm | 68.7% | 2.4% | 167 |
| 8pm–9pm | 82.5% | 0.0% | 137 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DTW 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) | Limited data | 13 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 28 | ||
| Summer peak (Jun 15 - Aug 15) | 72.7% | -1.6 pts | 0.9% | 233 |
| All other days | 74.4% | — | 0.9% | 525 |
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).