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


Delta	SAN	LAS	1h 35m	84%	0.2%	531	Flying now
Southwest	SAN	LAS	1h 25m	75%	1.3%	3,747	Flying now
Alaska	SAN	LAS	1h 28m	70%	3.5%	1,749	Flying now
Frontier	SAN	LAS	1h 30m	67%	1.6%	374	Flying now
Spirit	SAN	LAS	1h 23m	85%	1.8%	170	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 →	SAN 07:05 → RNO 08:45WN 1283	1h 55m Reno	RNO 10:40 → LAS 12:05WN 4133	5h 00m	100%	95%
Southwest Details →	SAN 06:45 → SMF 08:35WN 3544	2h 15m Sacramento	SMF 10:50 → LAS 12:20WN 1285	5h 35m	100%	92%
Southwest Details →	SAN 06:35 → SJC 08:15WN 3536	55m San Jose	SJC 09:10 → LAS 10:40WN 2369	4h 05m	96%	91%
Alaska Details →	SAN 08:24 → STS 10:24AS 3233 · flown by SkyWest	2h 42m Santa Rosa	STS 13:06 → LAS 14:44AS 2459 · flown by Horizon	6h 20m	98%	91%
American Details →	SAN 06:20 → PHX 07:54AA 625	2h 30m Phoenix	PHX 10:24 → LAS 11:37AA 2037	5h 17m	99%	88%
United Details →	SAN 06:20 → LAX 07:21UA 1006	59m Los Angeles	LAX 08:20 → LAS 09:42UA 1006	3h 22m	95%	87%
Southwest Details →	SAN 09:30 → SJC 11:00WN 4509	2h 40m San Jose	SJC 13:40 → LAS 15:10WN 714	5h 40m	100%	85%
Alaska Details →	SAN 06:50 → PDX 09:29AS 399	1h 16m Portland	PDX 10:45 → LAS 13:11AS 757	6h 21m	98%	81%
Tight connection: often missed
American Details →	SAN 06:16 → DFW 11:32AA 2535	46m Dallas-Fort Worth	DFW 12:18 → LAS 13:06AA 777	6h 50m	72%	52%
United Details →	SAN 18:27 → SFO 20:07UA 1302	1h 08m San Francisco	SFO 21:15 → LAS 23:10UA 406	4h 43m	67%	52%
American Details →	SAN 15:08 → DFW 20:30AA 2459	1h 04m Dallas-Fort Worth	DFW 21:34 → LAS 22:25AA 2872	7h 17m	45%	17%

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 · 1h 14m · leaves 06:35 2%

PDX · 1h 16m · leaves 06:50 2%

SJC · 55m · leaves 06:35 4%

Afternoon and evening

SFO · 1h 20m · leaves 19:35 53%

DFW · 1h 04m · leaves 15:08 55%

SMF · 1h 00m · leaves 13:55 73%

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 4773 SAN 08:35 → STS Alaska AS 2459 STS 13:06 → LAS Connection details →	2h 46m	6h 09m	100%	92%
Southwest WN 3447 SAN 06:40 → PHX American AA 2037 PHX 10:24 → LAS Connection details →	2h 14m	4h 57m	94%	82%
Southwest WN 3547 SAN 13:55 → SMF Frontier F9 2070 SMF 18:28 → LAS Connection details →	2h 53m	6h 02m	94%	78%

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