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 80-minute layover misses 1 time in 10 at 10 am and 1 time in 4 at 12 am.

Nonstops


United	PHX	DEN	1h 53m	84%	0.6%	2,364	Flying now
Frontier	PHX	DEN	1h 56m	80%	0.7%	1,464	Flying now
American	PHX	DEN	1h 52m	77%	0.8%	1,179	Flying now
Southwest	PHX	DEN	1h 45m	74%	0.6%	3,937	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	PHX 05:15 → OAK 07:10WN 4838	1h 10m Oakland	OAK 08:20 → DEN 11:45WN 3042	5h 30m	100%	100%
Southwest Details →	PHX 05:20 → SMF 07:15WN 3343	3h 00m Sacramento	SMF 10:15 → DEN 13:35WN 3774	7h 15m	100%	96%
Alaska Details →	PHX 15:13 → SAN 16:35AS 2028 · flown by Horizon	3h 26m San Diego	SAN 20:01 → DEN 23:30AS 1619	7h 17m	100%	96%
United Details →	PHX 06:00 → LAX 07:37UA 5849 · flown by SkyWest	1h 10m Los Angeles	LAX 08:47 → DEN 12:13UA 1912	5h 13m	96%	87%
United Details →	PHX 15:50 → LAX 17:27UA 5718 · flown by SkyWest	2h 18m Los Angeles	LAX 19:45 → DEN 23:15UA 2829	6h 25m	94%	86%
Southwest Details →	PHX 05:45 → LAS 06:50WN 3281	2h 05m Las Vegas	LAS 08:55 → DEN 11:50WN 247	5h 05m	100%	86%
Southwest Details →	PHX 07:45 → SLC 10:25WN 3339	1h 55m Salt Lake City	SLC 12:20 → DEN 13:50WN 1478	5h 05m	100%	85%
United Details →	PHX 10:06 → LAX 11:31UA 2487	1h 15m Los Angeles	LAX 12:46 → DEN 16:16UA 360	5h 10m	97%	85%
Tight connection: often missed
United Details →	PHX 13:16 → SFO 15:19UA 1427	51m San Francisco	SFO 16:10 → DEN 20:01UA 1430	5h 45m	41%	33%
Southwest Details →	PHX 16:00 → LAS 17:10WN 3283	1h 20m Las Vegas	LAS 18:30 → DEN 21:25WN 3843	4h 25m	67%	32%
American Details →	PHX 17:15 → DFW 21:50AA 3232	55m Dallas-Fort Worth	DFW 22:45 → DEN 23:55AA 662	5h 40m	53%	22%

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

BNA · 1h 15m · leaves 05:10 2%

LAX · 1h 15m · leaves 10:06 3%

LAS · 1h 05m · leaves 06:40 5%

Afternoon and evening

ABQ · 1h 05m · leaves 15:25 51%

BNA · 1h 10m · leaves 15:20 51%

SFO · 51m · leaves 13:16 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.


Southwest WN 3347 PHX 07:00 → SNA United UA 2843 SNA 10:20 → DEN Connection details →	2h 00m	5h 43m	100%	99%
Southwest WN 3343 PHX 05:20 → SMF United UA 2285 SMF 08:50 → DEN Connection details →	1h 35m	5h 56m	100%	97%
Southwest WN 3339 PHX 07:45 → SLC United UA 4720 SLC 13:05 → DEN Connection details →	2h 40m	6h 06m	100%	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