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 MEM → HOU flights land within a few points of 78% on time whatever the hour.

Nonstops (seasonal or thin)


Southwest	MEM	HOU	1h 40m	78%	0.7%	831	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	MEM 05:15 → MDW 06:50WN 2916	3h 20m Chicago	MDW 10:10 → HOU 12:50WN 2783	7h 35m	100%	86%
Delta Details →	MEM 05:15 → ATL 07:35DL 1666	3h 30m Atlanta	ATL 11:05 → HOU 12:11DL 1195	6h 57m	98%	81%
Delta Details →	MEM 10:36 → ATL 12:54DL 2071	2h 17m Atlanta	ATL 15:11 → HOU 16:23DL 2381	5h 49m	97%	76%
American Details →	MEM 05:51 → DFW 07:40AA 1884	3h 11m Dallas-Fort Worth	DFW 10:51 → HOU 12:16AA 6413 · flown by SkyWest	6h 25m	97%	74%
Southwest Details →	MEM 09:40 → DEN 11:05WN 579	1h 25m Denver	DEN 12:30 → HOU 16:05WN 1544	6h 25m	94%	74%
Delta Details →	MEM 14:42 → ATL 17:05DL 1681	3h 30m Atlanta	ATL 20:35 → HOU 21:43DL 2051	7h 01m	98%	70%
American Details →	MEM 17:19 → DFW 19:09AA 3678 · flown by Envoy	3h 35m Dallas-Fort Worth	DFW 22:44 → HOU 23:59AA 3394 · flown by Envoy	6h 40m	94%	67%
American Details →	MEM 09:29 → DFW 11:14AA 2114	3h 08m Dallas-Fort Worth	DFW 14:22 → HOU 15:44AA 5002 · flown by SkyWest	6h 16m	93%	64%
Tight connection: often missed
Southwest Details →	MEM 17:00 → BNA 18:00WN 410	55m Nashville	BNA 18:55 → HOU 21:02WN 534	4h 00m	41%	14%

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 20m · leaves 07:25 6%

Afternoon and evening

BNA · 55m · leaves 17:00 59%

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 1666 MEM 05:15 → ATL Southwest WN 4914 ATL 09:30 → HOU Connection details →	1h 55m	5h 20m	94%	73%
United UA 472 MEM 08:51 → DEN Southwest WN 1544 DEN 12:30 → HOU Connection details →	1h 55m	7h 14m	91%	70%
Delta DL 2071 MEM 10:36 → ATL Southwest WN 206 ATL 16:05 → HOU Connection details →	3h 11m	6h 39m	98%	63%

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