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

Nonstops (seasonal or thin)


Southwest	MDW	MEM	1h 40m	81%	1.5%	670	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

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


Southwest + Unitedtwo ticketsDetails →	MDW 06:50 → DEN 08:20WN 2765	2h 45m Denver	DEN 11:05 → MEM 14:26UA 1112	7h 36m	100%	92%
Southwest + Deltatwo ticketsDetails →	MDW 07:15 → ATL 10:05WN 3054	2h 10m Atlanta	ATL 12:15 → MEM 12:35DL 2778	5h 20m	100%	87%
Southwest + Frontiertwo ticketsDetails →	MDW 11:10 → DEN 12:40WN 2960	3h 03m Denver	DEN 15:43 → MEM 19:03F9 4626	7h 53m	96%	81%
Southwest + Deltatwo ticketsDetails →	MDW 08:55 → ATL 11:45WN 4154	3h 23m Atlanta	ATL 15:08 → MEM 15:31DL 1700	6h 35m	100%	80%
Southwest + Deltatwo ticketsDetails →	MDW 15:30 → MSP 17:00WN 2832	3h 05m Minneapolis	MSP 20:05 → MEM 22:21DL 4035 · flown by SkyWest	6h 51m	98%	78%
Delta Details →	MDW 06:00 → ATL 08:55DL 1285	1h 15m Atlanta	ATL 10:10 → MEM 10:37DL 2937	4h 37m	92%	77%
Southwest Details →	MDW 05:15 → DEN 06:50WN 2989	3h 40m Denver	DEN 10:30 → MEM 13:55WN 4698	8h 40m	100%	77%
Southwest + Deltatwo ticketsDetails →	MDW 10:15 → MSP 11:45WN 2869	4h 00m Minneapolis	MSP 15:45 → MEM 17:59DL 4063 · flown by SkyWest	7h 44m	98%	76%
Tight connection: often missed
Southwest Details →	MDW 16:15 → DEN 18:00WN 2769	1h 10m Denver	DEN 19:10 → MEM 22:32WN 2225	6h 20m	67%	25%

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 15m · leaves 06:00 8%

Afternoon and evening

DEN · 1h 10m · leaves 16:15 33%

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