Sun, Oct 4 has passed, so this is the 12-month record.

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

No clear winner: Southwest’s BNA → BHM flights land within a few points of 77% on time whatever the hour.

Nonstops (seasonal or thin)


Southwest	BNA	BHM	1h 00m	77%	0.6%	516	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Delta Details →	BNA 06:15 → ATL 08:31DL 3001	2h 44m Atlanta	ATL 11:15 → BHM 11:11DL 1017	4h 56m	99%	86%
Delta Details →	BNA 07:30 → ATL 09:44DL 2802	3h 46m Atlanta	ATL 13:30 → BHM 13:24DL 3012	5h 54m	98%	85%
American Details →	BNA 05:31 → CLT 08:00AA 1065	3h 30m Charlotte	CLT 11:30 → BHM 12:09AA 4932 · flown by SkyWest	6h 38m	100%	85%
Delta Details →	BNA 05:10 → ATL 07:20DL 2637	1h 05m Atlanta	ATL 08:25 → BHM 08:21DL 3100	3h 11m	95%	85%
American Details →	BNA 09:04 → ORD 11:00AA 3973 · flown by Envoy	2h 01m Chicago	ORD 13:01 → BHM 15:01AA 3971 · flown by Envoy	5h 57m	96%	81%
Southwest Details →	BNA 05:10 → DAL 07:00WN 485	2h 50m Dallas	DAL 09:50 → BHM 11:30WN 1271	6h 20m	100%	80%
Delta Details →	BNA 10:53 → ATL 13:04DL 1155	3h 21m Atlanta	ATL 16:25 → BHM 16:19DL 2484	5h 28m	99%	78%
Delta Details →	BNA 10:06 → DTW 12:46DL 2682	3h 05m Detroit	DTW 15:51 → BHM 16:55DL 4647 · flown by Endeavor	6h 49m	98%	77%
Tight connection: often missed
Delta Details →	BNA 14:51 → ATL 17:04DL 3159	55m Atlanta	ATL 17:59 → BHM 17:55DL 1132	3h 05m	70%	52%
American Details →	BNA 17:41 → ORD 19:55AA 1570	1h 35m Chicago	ORD 21:30 → BHM 23:28AA 3757 · flown by Envoy	5h 48m	66%	43%
American Details →	BNA 18:43 → DFW 21:00AA 3925 · flown by Envoy	59m Dallas-Fort Worth	DFW 21:59 → BHM 23:46AA 3067	5h 03m	61%	21%

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 19m · leaves 06:15 4%

DEN · 1h 20m · leaves 07:00 6%

ORD · 59m · leaves 09:04 10%

Afternoon and evening

DFW · 59m · leaves 18:43 39%

ORD · 1h 00m · leaves 18:24 41%

MIA · 52m · leaves 18:39 69%

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.


Southwest WN 507 BNA 10:10 → DTW Delta DL 4647 DTW 15:51 → BHM Connection details →	3h 06m	6h 45m	100%	80%
United UA 2465 BNA 07:40 → ORD American AA 3739 ORD 11:59 → BHM Connection details →	2h 18m	6h 24m	95%	68%
Southwest WN 893 BNA 12:50 → ATL Delta DL 1132 ATL 17:59 → BHM Connection details →	2h 59m	5h 06m	90%	67%

Rank all connections, any airlines →

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