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 one-hour layover misses 2% of the time at 9 am and 44% of the time at 8 pm.

Nonstops


United	DEN	PHX	2h 01m	82%	0.3%	2,363	Flying now
Frontier	DEN	PHX	1h 58m	78%	0.6%	1,469	Flying now
American	DEN	PHX	1h 59m	77%	1.0%	1,177	Flying now
Southwest	DEN	PHX	2h 00m	73%	1.0%	3,964	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	DEN 11:45 → LAX 13:17UA 1013	3h 05m Los Angeles	LAX 16:22 → PHX 17:59UA 5457 · flown by SkyWest	7h 14m	99%	98%
United Details →	DEN 10:02 → LAX 11:34UA 405	1h 31m Los Angeles	LAX 13:05 → PHX 14:42UA 5450 · flown by SkyWest	5h 40m	97%	94%
Southwest Details →	DEN 07:50 → ABQ 09:15WN 3056	1h 25m Albuquerque	ABQ 10:40 → PHX 11:00WN 147	4h 10m	100%	94%
United Details →	DEN 06:04 → LAX 07:34UA 1093	1h 03m Los Angeles	LAX 08:37 → PHX 10:06UA 659	5h 02m	98%	91%
Southwest Details →	DEN 07:45 → BUR 09:15WN 2929	2h 40m Burbank	BUR 11:55 → PHX 13:30WN 816	6h 45m	100%	91%
Southwest Details →	DEN 05:45 → LAS 06:40WN 3106	1h 15m Las Vegas	LAS 07:55 → PHX 09:15WN 209	4h 30m	100%	91%
Southwest Details →	DEN 07:50 → ONT 09:10WN 1660	3h 35m Ontario	ONT 12:45 → PHX 14:00WN 3062	7h 10m	100%	88%
United Details →	DEN 05:15 → SFO 06:53UA 2367	1h 11m San Francisco	SFO 08:04 → PHX 10:10UA 2374	5h 55m	97%	88%
Tight connection: often missed
Delta Details →	DEN 19:50 → LAX 21:28DL 2176	1h 07m Los Angeles	LAX 22:35 → PHX 00:10 +1DL 3827 · flown by SkyWest	5h 20m	74%	65%
American Details →	DEN 12:39 → DFW 15:46AA 2359	51m Dallas-Fort Worth	DFW 16:37 → PHX 17:09AA 1155	5h 30m	57%	35%
American Details →	DEN 10:38 → DFW 13:40AA 1756	50m Dallas-Fort Worth	DFW 14:30 → PHX 14:57AA 2108	5h 19m	59%	34%

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

SAN · 1h 17m · leaves 06:32 0%

IAH · 1h 08m · leaves 05:00 2%

LAX · 1h 03m · leaves 06:04 2%

Afternoon and evening

LAX · 48m · leaves 18:12 56%

MDW · 55m · leaves 17:35 77%

SAN · 1h 05m · leaves 19:15 79%

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.


American AA 4957 DEN 11:44 → LAX United UA 5457 LAX 16:22 → PHX Connection details →	3h 03m	7h 15m	100%	99%
Southwest WN 3106 DEN 05:45 → LAS American AA 2004 LAS 09:56 → PHX Connection details →	3h 16m	6h 23m	100%	92%
Frontier F9 3933 DEN 10:29 → BOI Alaska AS 3095 BOI 14:55 → PHX Connection details →	2h 25m	6h 45m	95%	92%

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