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 77% on time.

Nonstops


Alaska	SAN	SJC	1h 36m	81%	1.3%	1,780	Flying now
Southwest	SAN	SJC	1h 30m	76%	0.7%	3,746	Flying now
Spirit	SAN	SJC	–	57%few flights	0.0%	7	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Delta Details →	SAN 10:50 → LAX 12:12DL 3716 · flown by SkyWest	2h 20m Los Angeles	LAX 14:32 → SJC 15:46DL 3822 · flown by SkyWest	4h 56m	99%	94%
Southwest Details →	SAN 07:45 → LAS 09:05WN 2310	3h 05m Las Vegas	LAS 12:10 → SJC 13:45WN 1242	6h 00m	100%	90%
Delta Details →	SAN 06:15 → SLC 09:22DL 1117	2h 18m Salt Lake City	SLC 11:40 → SJC 12:38DL 1254	6h 23m	99%	88%
Southwest Details →	SAN 06:40 → PHX 08:10WN 3447	1h 30m Phoenix	PHX 09:40 → SJC 11:35WN 3336	4h 55m	94%	88%
Delta Details →	SAN 06:15 → LAX 07:34DL 3743 · flown by SkyWest	1h 48m Los Angeles	LAX 09:22 → SJC 10:43DL 2965	4h 28m	99%	88%
Delta Details →	SAN 09:47 → SLC 12:50DL 1177	2h 21m Salt Lake City	SLC 15:11 → SJC 16:07DL 1260	6h 20m	99%	88%
Alaska Details →	SAN 06:50 → PDX 09:29AS 399	2h 16m Portland	PDX 11:45 → SJC 13:35AS 1632	6h 45m	99%	87%
Southwest Details →	SAN 09:45 → LAS 11:10WN 2695	1h 35m Las Vegas	LAS 12:45 → SJC 14:20WN 4223	4h 35m	100%	85%
Tight connection: often missed
Alaska Details →	SAN 13:59 → SEA 16:58AS 465	47m Seattle	SEA 17:45 → SJC 20:00AS 539	6h 01m	51%	40%
Southwest Details →	SAN 13:20 → DEN 16:55WN 3496	2h 00m Denver	DEN 18:55 → SJC 20:25WN 1727	7h 07m	68%	19%
Southwest Details →	SAN 17:10 → PHX 18:35WN 2521	1h 10m Phoenix	PHX 19:45 → SJC 21:35WN 3337	4h 25m	32%	15%

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

DAL · 55m · leaves 06:35 14%

LAS · 50m · leaves 07:45 44%

Afternoon and evening

PDX · 59m · leaves 17:58 17%

SLC · 53m · leaves 13:25 20%

SEA · 47m · leaves 13:59 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.


United UA 5384 SAN 10:49 → LAX Delta DL 3822 LAX 14:32 → SJC Connection details →	2h 34m	4h 57m	99%	94%
Alaska AS 3122 SAN 08:55 → SLC Delta DL 1260 SLC 15:11 → SJC Connection details →	3h 02m	7h 12m	99%	89%
United UA 1006 SAN 06:20 → LAX Delta DL 2965 LAX 09:22 → SJC Connection details →	2h 01m	4h 23m	97%	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