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 4 in 5 on time.

Nonstops


Southwest	SJC	LAS	1h 30m	81%	0.4%	3,247	Flying now
Frontier	SJC	LAS	1h 38m	77%	1.0%	192	Flying now
Spirit	SJC	LAS	1h 31m	83%	0.7%	138	Not flying now
Delta	SJC	LAS	1h 37m	81%	0.0%	164	Not flying now
United	SJC	LAS	–	100%few flights	0.0%	2	Not flying now
Alaska	SJC	LAS	–	78%few flights	0.0%	9	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	SJC 06:30 → BUR 07:40WN 4843	1h 55m Burbank	BUR 09:35 → LAS 10:45WN 4724	4h 15m	98%	94%
Southwest Details →	SJC 09:55 → LGB 11:15WN 4958	4h 00m Long Beach	LGB 15:15 → LAS 16:25WN 2414	6h 30m	100%	88%
Southwest Details →	SJC 06:30 → SNA 07:55WN 3707	1h 05m Santa Ana	SNA 09:00 → LAS 10:10WN 2218	3h 40m	100%	88%
American Details →	SJC 06:01 → PHX 08:05AA 1694	2h 19m Phoenix	PHX 10:24 → LAS 11:37AA 2037	5h 36m	97%	87%
Southwest Details →	SJC 17:45 → SAN 19:10WN 3526	3h 30m San Diego	SAN 22:40 → LAS 00:12 +1WN 3510	6h 27m	92%	85%
Alaska Details →	SJC 08:00 → PDX 09:44AS 679	1h 01m Portland	PDX 10:45 → LAS 13:11AS 757	5h 11m	100%	84%
Alaska Details →	SJC 14:31 → PDX 16:15AS 1633	1h 35m Portland	PDX 17:50 → LAS 20:12AS 531	5h 41m	100%	83%
Southwest Details →	SJC 09:00 → RNO 10:05WN 4133	2h 45m Reno	RNO 12:50 → LAS 14:10WN 314	5h 10m	100%	82%
Tight connection: often missed
Alaska Details →	SJC 10:03 → SAN 11:43AS 3059 · flown by SkyWest	47m San Diego	SAN 12:30 → LAS 13:58AS 2255 · flown by Horizon	3h 55m	70%	37%
Alaska Details →	SJC 08:20 → SEA 10:31AS 1426	1h 00m Seattle	SEA 11:31 → LAS 14:16AS 738	5h 56m	41%	32%
American Details →	SJC 14:24 → DFW 20:06AA 436	48m Dallas-Fort Worth	DFW 20:54 → LAS 21:47AA 1797	7h 21m	43%	23%

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

SNA · 1h 05m · leaves 06:30 0%

PDX · 1h 01m · leaves 08:00 0%

SEA · 1h 16m · leaves 07:20 3%

Afternoon and evening

LAX · 1h 10m · leaves 14:30 24%

DFW · 48m · leaves 14:24 57%

SAN · 1h 00m · leaves 19:00 67%

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 3186 SJC 06:25 → PHX American AA 2037 PHX 10:24 → LAS Connection details →	2h 04m	5h 12m	100%	90%
Southwest WN 3632 SJC 06:00 → SEA Delta DL 2905 SEA 09:55 → LAS Connection details →	1h 35m	6h 28m	100%	85%
Southwest WN 3693 SJC 06:30 → PDX Alaska AS 757 PDX 10:45 → LAS Connection details →	2h 27m	6h 41m	100%	84%

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