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 AUS → SJC flights land within a few points of 3 in 4 on time whatever the hour.

Nonstops


Southwest	AUS	SJC	3h 45m	75%	0.3%	1,119	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 (San Jose is 2 h behind Austin). Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	AUS 06:40 → PHX 07:00WN 374	2h 40m Phoenix	PHX 09:40 → SJC 11:35WN 3336	6h 55m	100%	94%
Southwest Details →	AUS 06:45 → SAN 07:35WN 4469	1h 55m San Diego	SAN 09:30 → SJC 11:00WN 4509	6h 15m	100%	91%
Southwest Details →	AUS 09:22 → LAS 10:08WN 322	2h 02m Las Vegas	LAS 12:10 → SJC 13:45WN 1242	6h 23m	100%	90%
Alaska Details →	AUS 08:30 → SEA 10:58AS 215	3h 20m Seattle	SEA 14:18 → SJC 16:32AS 1366	10h 02m	100%	89%
Alaska Details →	AUS 07:15 → PDX 09:25AS 541	2h 20m Portland	PDX 11:45 → SJC 13:35AS 1632	8h 20m	99%	87%
Delta Details →	AUS 08:15 → SLC 10:13DL 2618	1h 27m Salt Lake City	SLC 11:40 → SJC 12:38DL 1254	6h 23m	96%	87%
Delta Details →	AUS 11:19 → SEA 13:54DL 1684	3h 56m Seattle	SEA 17:50 → SJC 20:12DL 4100 · flown by SkyWest	10h 53m	98%	85%
Southwest Details →	AUS 06:10 → LAX 07:15WN 332	1h 45m Los Angeles	LAX 09:00 → SJC 10:15WN 2431	6h 05m	100%	84%
Tight connection: often missed
Alaska Details →	AUS 19:59 → SAN 21:13AS 3249 · flown by SkyWest	1h 11m San Diego	SAN 22:24 → SJC 23:54AS 1624	5h 55m	66%	49%
Southwest Details →	AUS 17:30 → LAX 18:40WN 334	1h 15m Los Angeles	LAX 19:55 → SJC 21:15WN 2435	5h 40m	65%	35%
Southwest Details →	AUS 18:35 → DEN 20:05WN 2573	1h 15m Denver	DEN 21:20 → SJC 22:55WN 1728	6h 20m	61%	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

DEN · 50m · leaves 05:45 5%

ATL · 52m · leaves 05:25 6%

MSP · 1h 08m · leaves 06:10 6%

Afternoon and evening

DFW · 1h 13m · leaves 18:54 24%

SAN · 1h 11m · leaves 19:59 34%

DEN · 1h 15m · leaves 18:35 39%

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.


American AA 455 AUS 06:16 → PHX Southwest WN 3336 PHX 09:40 → SJC Connection details →	3h 00m	7h 19m	96%	90%
Alaska AS 3293 AUS 06:00 → SAN Southwest WN 4509 SAN 09:30 → SJC Connection details →	2h 22m	7h 00m	97%	89%
Southwest WN 332 AUS 06:10 → LAX Delta DL 2965 LAX 09:22 → SJC Connection details →	2h 07m	6h 33m	100%	88%

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