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

No clear winner: airlines and hours on this route all land within a few points of 82% on time.

Nonstops


Southwest	SAT	PHX	2h 30m	84%	0.2%	1,378	Flying now
American	SAT	PHX	2h 34m	80%	0.8%	1,066	Flying now
Frontier	SAT	PHX	2h 34m	83%	0.0%	65	Not 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 San Antonio). Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	SAT 05:45 → DEN 07:00WN 3565	1h 40m Denver	DEN 08:40 → PHX 09:35WN 431	5h 50m	100%	89%
American Details →	SAT 07:00 → LAX 08:20AA 4951 · flown by SkyWest	1h 40m Los Angeles	LAX 10:00 → PHX 11:28AA 1668	6h 28m	97%	88%
Delta Details →	SAT 12:36 → SLC 14:30DL 930	2h 55m Salt Lake City	SLC 17:25 → PHX 18:07DL 1451	7h 31m	98%	87%
United Details →	SAT 09:37 → IAH 10:44UA 2827	3h 36m Houston	IAH 14:20 → PHX 15:10UA 1238	7h 33m	100%	86%
Delta Details →	SAT 18:03 → SLC 20:00DL 2685	2h 45m Salt Lake City	SLC 22:45 → PHX 23:31DL 1496	7h 28m	98%	86%
Southwest Details →	SAT 05:50 → LAS 06:30WN 1662	3h 10m Las Vegas	LAS 09:40 → PHX 11:00WN 2310	7h 10m	100%	85%
Delta Details →	SAT 06:30 → SLC 08:24DL 2592	3h 06m Salt Lake City	SLC 11:30 → PHX 12:12DL 1431	7h 44m	99%	84%
Delta Details →	SAT 07:19 → LAX 08:20DL 2534	1h 41m Los Angeles	LAX 10:01 → PHX 11:34DL 3951 · flown by SkyWest	6h 15m	97%	83%
Tight connection: often missed
American Details →	SAT 17:35 → DFW 18:59AA 3311	1h 31m Dallas-Fort Worth	DFW 20:30 → PHX 21:02AA 1133	5h 27m	73%	39%
United Details →	SAT 17:57 → IAH 19:04UA 2323	49m Houston	IAH 19:53 → PHX 20:42UA 2078	4h 45m	51%	37%
Southwest Details →	SAT 18:30 → DEN 20:00WN 3568	1h 00m Denver	DEN 21:00 → PHX 22:00WN 1684	5h 25m	53%	21%

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 04m · leaves 06:40 4%

DEN · 1h 03m · leaves 05:40 7%

SFO · 1h 10m · leaves 07:00 7%

Afternoon and evening

ORD · 56m · leaves 13:32 44%

DEN · 1h 00m · leaves 18:30 47%

IAH · 49m · leaves 17:57 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.


Southwest WN 1662 SAT 05:50 → LAS American AA 2004 LAS 09:56 → PHX Connection details →	3h 26m	7h 18m	100%	92%
Delta DL 2588 SAT 16:44 → LAX United UA 5458 LAX 21:22 → PHX Connection details →	3h 24m	8h 15m	94%	87%
Southwest WN 3565 SAT 05:45 → DEN Frontier F9 2141 DEN 09:15 → PHX Connection details →	2h 15m	6h 31m	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