Itineraries flown on 20+ days in the Jun 6 – Jul 31, 2026 schedule · each leg’s record Aug 2025 – Jul 2026

Connect in the morning. The same 75-minute layover misses 6% of the time at 7 am and 29% of the time at 8 pm.

Nonstops (seasonal or thin)


Delta	DTW	BHM	2h 03m	79%	1.1%	799	Flying now
Spirit	DTW	BHM	–	70%few flights	0.0%	10	Not flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Birmingham on time. Total trip = scheduled departure to arrival, layover included (Birmingham is 1 h behind Detroit). Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	DTW 06:17 → ATL 08:12DL 1611	3h 03m Atlanta	ATL 11:15 → BHM 11:11DL 1017	5h 54m	98%	87%
Delta Details →	DTW 09:25 → ATL 11:25DL 2777	2h 05m Atlanta	ATL 13:30 → BHM 13:24DL 3012	4h 59m	98%	86%
United Details →	DTW 10:55 → IAH 12:57UA 6251 · flown by Mesa	1h 28m Houston	IAH 14:25 → BHM 16:20UA 6120 · flown by Mesa	6h 25m	94%	85%
Delta Details →	DTW 05:17 → ATL 07:10DL 2375	1h 15m Atlanta	ATL 08:25 → BHM 08:21DL 3100	4h 04m	94%	85%
American Details →	DTW 07:00 → CLT 08:54AA 1439	2h 36m Charlotte	CLT 11:30 → BHM 12:09AA 4932 · flown by SkyWest	6h 09m	98%	84%
American Details →	DTW 05:37 → DFW 07:32AA 1108	2h 18m Dallas-Fort Worth	DFW 09:50 → BHM 11:46AA 3469 · flown by Envoy	7h 09m	98%	84%
American Details →	DTW 10:33 → ORD 11:04AA 4103 · flown by Envoy	1h 57m Chicago	ORD 13:01 → BHM 15:01AA 3971 · flown by Envoy	5h 28m	99%	83%
Delta Details →	DTW 10:25 → ATL 12:25DL 2856	4h 00m Atlanta	ATL 16:25 → BHM 16:19DL 2484	6h 56m	99%	79%
Tight connection: often missed
Delta Details →	DTW 08:25 → ATL 10:25DL 1653	50m Atlanta	ATL 11:15 → BHM 11:11DL 1017	3h 46m	75%	67%
Delta Details →	DTW 16:00 → ATL 18:04DL 1467	55m Atlanta	ATL 18:59 → BHM 18:57DL 2371	3h 57m	71%	42%
American Details →	DTW 17:29 → DCA 19:15AA 5172 · flown by PSA	1h 00m Washington	DCA 20:15 → BHM 21:28AA 5643 · flown by PSA	4h 59m	45%	18%

Same layover, different day-part

How often the first flight arrives too late to connect (45 min minimum), for one-ticket layovers of 45–80 minutes.

Morning

ATL · 1h 15m · leaves 05:17 6%

ORD · 55m · leaves 10:33 7%

Afternoon and evening

ATL · 55m · leaves 16:00 29%

LGA · 1h 15m · leaves 17:59 29%

DCA · 1h 00m · leaves 17:29 55%

Delays build through the day, so an afternoon first leg eats the layover. A short connection is fine early in the morning and a gamble later on.

Mixing airlines

One ticketMiss it and the airline rebooks you; bags go through. 45 min is enough.

Separate ticketsMiss it and you buy a new ticket. Re-check bags, clear security again: we require 90 min.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

Regional partners count as the airline that sells them: SkyWest flying Delta Connection is one Delta ticket.

How these are worked out. Makes the connection: share of the last year’s flights where the first flight arrived with at least 45 minutes to spare (90 on separate tickets). Arrives on time: first flight not cancelled × connection made × second flight not cancelled and arriving within 15 minutes. Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.

About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON