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 MDW → BHM flights land within a few points of 4 in 5 on time whatever the hour.

Nonstops (seasonal or thin)


Southwest	MDW	BHM	1h 40m	79%	1.1%	458	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 →	MDW 07:15 → ATL 10:05WN 3054	3h 25m Atlanta	ATL 13:30 → BHM 13:24DL 3012	6h 09m	100%	88%
Delta Details →	MDW 06:00 → ATL 08:55DL 1285	2h 20m Atlanta	ATL 11:15 → BHM 11:11DL 1017	5h 11m	95%	83%
Southwest Details →	MDW 08:55 → BWI 11:45WN 1355	3h 50m Baltimore	BWI 15:35 → BHM 16:40WN 3656	7h 45m	100%	81%
Southwest Details →	MDW 05:00 → DAL 07:15WN 1377	2h 35m Dallas	DAL 09:50 → BHM 11:30WN 1271	6h 30m	100%	78%
Delta Details →	MDW 11:05 → ATL 14:01DL 1063	2h 24m Atlanta	ATL 16:25 → BHM 16:19DL 2484	5h 16m	98%	76%
Southwest + Deltatwo ticketsDetails →	MDW 08:55 → ATL 11:45WN 4154	3h 29m Atlanta	ATL 15:14 → BHM 15:10DL 3163	6h 15m	100%	75%
Southwest + Unitedtwo ticketsDetails →	MDW 06:50 → DEN 08:20WN 2765	1h 55m Denver	DEN 10:15 → BHM 14:03UA 1241	7h 13m	92%	74%
Delta Details →	MDW 17:10 → ATL 20:22DL 1728	2h 43m Atlanta	ATL 23:05 → BHM 23:02DL 2034	5h 53m	95%	73%

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 · 55m · leaves 06:00 10%

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