Itineraries flown on 20+ days in the Jun 6 – Jul 31, 2026 schedule · each leg’s record Aug 2025 – Jul 2026

Connect in the morning. The same 70-minute layover misses 1 time in 10 at 11 am and almost half the time at 9 pm.

Nonstops


Frontier	DEN	MEM	2h 20m	85%	0.7%	144	Flying now
United	DEN	MEM	2h 21m	84%	0.8%	728	Flying now
Southwest	DEN	MEM	2h 15m	66%	0.8%	492	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Memphis on time. Total trip = scheduled departure to arrival, layover included (Memphis is 1 h ahead of Denver). Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	DEN 00:59 → DTW 05:48DL 1096	2h 57m Detroit	DTW 08:45 → MEM 09:41DL 3137	7h 45m	97%	91%
Delta Details →	DEN 00:40 → ATL 05:42DL 302	3h 28m Atlanta	ATL 09:10 → MEM 09:27DL 2071	7h 50m	100%	87%
American Details →	DEN 23:59 → CLT 05:13AA 3156	3h 57m Charlotte	CLT 09:10 → MEM 10:00 +1AA 2110	9h 01m	100%	86%
United Details →	DEN 05:00 → IAH 08:32UA 320	3h 23m Houston	IAH 11:55 → MEM 13:41UA 5758 · flown by SkyWest	7h 41m	100%	85%
Southwest Details →	DEN 05:15 → HOU 08:40WN 1730	1h 08m Houston	HOU 09:48 → MEM 11:20WN 4013	5h 05m	97%	85%
Delta Details →	DEN 05:45 → ATL 10:42DL 341	1h 33m Atlanta	ATL 12:15 → MEM 12:35DL 2778	5h 50m	97%	84%
American Details →	DEN 06:20 → DFW 09:27AA 2078	3h 10m Dallas-Fort Worth	DFW 12:37 → MEM 14:16AA 3676 · flown by Envoy	6h 56m	98%	82%
United Details →	DEN 10:07 → IAH 13:40UA 1129	2h 44m Houston	IAH 16:24 → MEM 18:12UA 6158 · flown by Mesa	7h 05m	100%	81%
Tight connection: often missed
Delta Details →	DEN 16:05 → MSP 19:15DL 2271	50m Minneapolis	MSP 20:05 → MEM 22:21DL 4035 · flown by SkyWest	5h 16m	63%	51%
United Details →	DEN 16:29 → ORD 20:14UA 675	1h 06m Chicago	ORD 21:20 → MEM 23:21UA 2317	5h 52m	64%	36%
Delta Details →	DEN 13:15 → ATL 18:18DL 824	47m Atlanta	ATL 19:05 → MEM 19:29DL 2384	5h 14m	56%	32%

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

ORD · 1h 11m · leaves 07:05 9%

Afternoon and evening

MSP · 50m · leaves 16:05 37%

ATL · 47m · leaves 13:15 44%

DFW · 1h 12m · leaves 18:10 49%

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.


United UA 355 DEN 09:40 → DFW American AA 3678 DFW 15:10 → MEM Connection details →	2h 22m	6h 09m	100%	83%
United UA 2160 DEN 07:32 → DFW American AA 3676 DFW 12:37 → MEM Connection details →	1h 58m	5h 44m	95%	80%
Southwest WN 1638 DEN 13:42 → MSP Delta DL 4035 MSP 20:05 → MEM Connection details →	3h 25m	7h 39m	98%	79%

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