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

Nonstops


Southwest	HOU	PHX	2h 55m	78%	0.5%	2,098	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 2 h behind Houston). Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	HOU 07:35 → ABQ 08:40WN 1943	2h 00m Albuquerque	ABQ 10:40 → PHX 11:00WN 147	5h 25m	97%	91%
Southwest Details →	HOU 05:30 → DEN 06:55WN 1970	1h 45m Denver	DEN 08:40 → PHX 09:35WN 431	6h 05m	100%	89%
Southwest Details →	HOU 07:45 → ONT 08:55WN 4391	3h 50m Ontario	ONT 12:45 → PHX 14:00WN 3062	8h 15m	100%	88%
Southwest Details →	HOU 07:50 → LAS 09:00WN 1998	3h 30m Las Vegas	LAS 12:30 → PHX 13:50WN 2311	8h 00m	98%	84%
Southwest Details →	HOU 07:00 → DAL 08:10WN 4	4h 00m Dallas	DAL 12:10 → PHX 12:35WN 1382	7h 35m	100%	81%
Southwest Details →	HOU 07:48 → SJC 09:38WN 2079	2h 02m San Jose	SJC 11:40 → PHX 13:35WN 3232	7h 47m	96%	79%
Southwest Details →	HOU 07:30 → MCI 09:25WN 1037	1h 15m Kansas City	MCI 10:40 → PHX 11:25WN 4651	5h 55m	92%	79%
Southwest Details →	HOU 09:25 → AUS 10:20WN 270	1h 25m Austin	AUS 11:45 → PHX 12:05WN 375	4h 40m	96%	77%
Tight connection: often missed
American Details →	HOU 18:49 → DFW 20:15AA 6385 · flown by SkyWest	1h 14m Dallas-Fort Worth	DFW 21:29 → PHX 22:06AA 3239	5h 18m	67%	35%
Southwest Details →	HOU 15:05 → MCI 17:00WN 2029	1h 30m Kansas City	MCI 18:30 → PHX 19:15WN 2580	6h 10m	74%	29%
Southwest Details →	HOU 17:55 → DEN 19:40WN 1974	1h 20m Denver	DEN 21:00 → PHX 22:00WN 1684	6h 00m	42%	16%

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

DEN · 1h 05m · leaves 05:30 0%

TPA · 1h 12m · leaves 07:15 3%

DAL · 1h 15m · leaves 08:00 7%

Afternoon and evening

ATL · 1h 17m · leaves 17:12 15%

DEN · 1h 13m · leaves 19:10 20%

DFW · 1h 14m · leaves 18:49 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.


Southwest WN 2251 HOU 05:30 → LAS American AA 2004 LAS 09:56 → PHX Connection details →	3h 26m	7h 38m	100%	92%
Southwest WN 1943 HOU 07:35 → ABQ American AA 1348 ABQ 11:43 → PHX Connection details →	3h 03m	6h 25m	97%	89%
Southwest WN 1970 HOU 05:30 → DEN Frontier F9 2141 DEN 09:15 → PHX Connection details →	2h 20m	6h 46m	100%	87%

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