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 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, 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 →	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%
Delta Details →	MDW 17:10 → ATL 20:22DL 1728	2h 43m Atlanta	ATL 23:05 → BHM 23:02DL 2034	5h 53m	95%	73%
Delta Details →	MDW 12:50 → ATL 15:49DL 2417	2h 10m Atlanta	ATL 17:59 → BHM 17:55DL 1132	5h 06m	97%	70%
Southwest Details →	MDW 07:15 → BNA 08:40WN 2959	2h 05m Nashville	BNA 10:45 → BHM 11:40WN 434	4h 25m	96%	70%
Southwest Details →	MDW 10:10 → HOU 12:50WN 2783	1h 55m Houston	HOU 14:45 → BHM 16:30WN 437	6h 20m	95%	66%

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.


Southwest WN 3054 MDW 07:15 → ATL Delta DL 3012 ATL 13:30 → BHM Connection details →	3h 25m	6h 09m	100%	88%
Southwest WN 4154 MDW 08:55 → ATL Delta DL 3163 ATL 15:14 → BHM Connection details →	3h 29m	6h 15m	100%	75%
Southwest WN 2765 MDW 06:50 → DEN United UA 1241 DEN 10:15 → BHM Connection details →	1h 55m	7h 13m	92%	74%

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