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 3 in 4 on time.

Nonstops


Southwest	STS	SAN	1h 40m	77%	0.6%	181	Flying now
Alaska	STS	SAN	1h 44m	74%	4.8%	916	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach San Diego on time. Total trip = scheduled departure to arrival, layover included. Layovers up to 4 hours. Pick a connection for the details.


Alaska Details →	STS 07:00 → PDX 08:47AS 3417 · flown by SkyWest	1h 59m Portland	PDX 10:46 → SAN 13:27AS 1394	6h 27m	97%	81%
Alaska Details →	STS 12:05 → PDX 13:46AS 3009 · flown by SkyWest	1h 09m Portland	PDX 14:55 → SAN 17:29AS 1312	5h 24m	96%	73%
Alaska Details →	STS 12:52 → SEA 14:55AS 1322	1h 50m Seattle	SEA 16:45 → SAN 19:36AS 1348	6h 44m	97%	57%
American Details →	STS 16:12 → PHX 18:23AA 6459 · flown by SkyWest	1h 57m Phoenix	PHX 20:20 → SAN 21:34AA 559	5h 22m	92%	57%
American Details →	STS 13:00 → PHX 15:09AA 3514 · flown by Envoy	1h 57m Phoenix	PHX 17:06 → SAN 18:18AA 2466	5h 18m	94%	43%
Southwest Details →	STS 15:55 → LAS 17:40WN 3992	3h 50m Las Vegas	LAS 21:30 → SAN 22:42WN 1227	6h 47m	98%	38%
Alaska Details →	STS 13:06 → LAS 14:44AS 2459 · flown by Horizon	3h 35m Las Vegas	LAS 18:19 → SAN 19:36AS 2251 · flown by Horizon	6h 30m	100%	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.

Afternoon and evening

LAS · 1h 15m · leaves 15:55 22%

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.


Alaska AS 3466 STS 17:35 → LAX Delta DL 3746 LAX 22:40 → SAN Connection details →	3h 25m	6h 05m	97%	84%
American AA 3514 STS 13:00 → PHX Alaska AS 3060 PHX 18:53 → SAN Connection details →	3h 44m	7h 23m	100%	66%
American AA 6459 STS 16:12 → PHX Southwest WN 3426 PHX 21:55 → SAN Connection details →	3h 32m	6h 55m	93%	51%

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