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 HOU → BHM flights land within a few points of 77% on time whatever the hour.

Nonstops (seasonal or thin)


Southwest	HOU	BHM	1h 40m	77%	0.4%	448	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. Layovers up to 4 hours. Pick a connection for the details.


Southwest + Deltatwo ticketsDetails →	HOU 05:50 → ATL 08:50WN 2622	2h 25m Atlanta	ATL 11:15 → BHM 11:11DL 1017	5h 21m	100%	89%
Southwest + Unitedtwo ticketsDetails →	HOU 05:30 → DEN 06:55WN 1970	3h 20m Denver	DEN 10:15 → BHM 14:03UA 1241	8h 33m	100%	81%
Southwest + Deltatwo ticketsDetails →	HOU 09:45 → ATL 12:48WN 1947	3h 37m Atlanta	ATL 16:25 → BHM 16:19DL 2484	6h 36m	100%	80%
Southwest Details →	HOU 07:00 → DAL 08:10WN 4	1h 40m Dallas	DAL 09:50 → BHM 11:30WN 1271	4h 30m	97%	77%
Delta Details →	HOU 17:12 → ATL 20:28DL 2381	2h 37m Atlanta	ATL 23:05 → BHM 23:02DL 2034	5h 51m	95%	73%
Delta Details →	HOU 13:10 → ATL 16:18DL 1195	3h 42m Atlanta	ATL 20:00 → BHM 19:58DL 3202	6h 48m	97%	72%
Southwest Details →	HOU 07:10 → BNA 09:10WN 1954	1h 35m Nashville	BNA 10:45 → BHM 11:40WN 434	4h 30m	96%	71%
Delta Details →	HOU 10:16 → ATL 13:20DL 1509	1h 54m Atlanta	ATL 15:14 → BHM 15:10DL 3163	4h 54m	96%	70%
Tight connection: often missed
Southwest Details →	HOU 10:30 → BWI 14:35WN 1960	1h 00m Baltimore	BWI 15:35 → BHM 16:40WN 3656	6h 10m	73%	58%
American Details →	HOU 12:46 → DFW 14:09AA 6413 · flown by SkyWest	55m Dallas-Fort Worth	DFW 15:04 → BHM 17:02AA 5072 · flown by PSA	4h 20m	74%	36%

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.

Afternoon and evening

ATL · 1h 16m · leaves 17:12 15%

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