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 BHM → MDW flights land within a few points of 87% on time whatever the hour.

Nonstops (seasonal or thin)


Southwest	BHM	MDW	1h 50m	87%	1.1%	457	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Delta Details →	BHM 05:15 → ATL 07:21DL 1979	3h 44m Atlanta	ATL 11:05 → MDW 12:05DL 2417	6h 50m	100%	85%
Delta Details →	BHM 06:25 → DTW 09:27DL 3006	2h 58m Detroit	DTW 12:25 → MDW 12:46DL 4688 · flown by Endeavor	6h 21m	99%	79%
Southwest Details →	BHM 06:15 → DAL 08:00WN 239	2h 05m Dallas	DAL 10:05 → MDW 12:20WN 1357	6h 05m	98%	79%
Delta Details →	BHM 09:28 → ATL 11:29DL 3100	3h 46m Atlanta	ATL 15:15 → MDW 16:15DL 1728	6h 47m	100%	73%
Delta Details →	BHM 16:00 → ATL 18:14DL 3163	3h 01m Atlanta	ATL 21:15 → MDW 22:17DL 1076	6h 17m	95%	70%
Delta Details →	BHM 06:15 → ATL 08:21DL 1618	48m Atlanta	ATL 09:09 → MDW 10:09DL 1063	3h 54m	81%	68%
Southwest Details →	BHM 09:20 → DEN 11:05WN 436	1h 55m Denver	DEN 13:00 → MDW 16:20WN 1601	7h 00m	100%	59%
Southwest Details →	BHM 06:50 → MCO 09:25WN 440	3h 35m Orlando	MCO 13:00 → MDW 14:40WN 2657	7h 50m	100%	51%
Tight connection: often missed
Southwest Details →	BHM 18:40 → BNA 19:40WN 4389	2h 00m Nashville	BNA 21:40 → MDW 19:10WN 578	4h 30m	73%	31%

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 · 48m · leaves 06:15 19%

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.


Delta DL 1979 BHM 05:15 → ATL Southwest WN 224 ATL 10:00 → MDW Connection details →	2h 39m	5h 45m	99%	87%
American AA 5561 BHM 06:00 → DCA Southwest WN 1445 DCA 12:00 → MDW Connection details →	2h 42m	7h 00m	99%	77%
American AA 5218 BHM 06:00 → PHL Southwest WN 3224 PHL 11:22 → MDW Connection details →	2h 02m	6h 32m	91%	76%

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