Itineraries flown on 20+ days in the Jun 6 – Jul 31, 2026 schedule · each leg’s record Aug 2025 – Jul 2026

Connect in the morning. The same 75-minute layover misses 2% of the time at 9 am and barely half the time at 10 pm.

Nonstops


Delta	LAS	SAN	1h 19m	80%	0.2%	530	Flying now
Frontier	LAS	SAN	1h 18m	69%	0.8%	374	Flying now
Alaska	LAS	SAN	1h 19m	64%	3.3%	1,752	Flying now
Southwest	LAS	SAN	1h 15m	62%	0.9%	3,765	Flying now
Spirit	LAS	SAN	1h 16m	81%	0.6%	169	Not 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.


United Details →	LAS 06:00 → LAX 07:14UA 2039	1h 46m Los Angeles	LAX 09:00 → SAN 10:08UA 4643 · flown by SkyWest	4h 08m	99%	86%
Delta Details →	LAS 17:41 → LAX 19:00DL 2120	3h 40m Los Angeles	LAX 22:40 → SAN 23:40DL 3746 · flown by SkyWest	5h 59m	98%	84%
Delta Details →	LAS 06:00 → SLC 08:20DL 2674	2h 55m Salt Lake City	SLC 11:15 → SAN 12:17DL 1296	6h 17m	99%	82%
United Details →	LAS 14:15 → LAX 15:35UA 2184	3h 15m Los Angeles	LAX 18:50 → SAN 19:51UA 5415 · flown by SkyWest	5h 36m	97%	82%
Alaska Details →	LAS 07:00 → PDX 09:17AS 1629	1h 29m Portland	PDX 10:46 → SAN 13:27AS 1394	6h 27m	98%	80%
Delta Details →	LAS 17:00 → SLC 19:25DL 1672	3h 30m Salt Lake City	SLC 22:55 → SAN 23:50DL 1202	6h 53m	99%	80%
Delta Details →	LAS 13:08 → LAX 14:32DL 1696	3h 43m Los Angeles	LAX 18:15 → SAN 19:16DL 4087 · flown by SkyWest	6h 08m	97%	80%
Southwest Details →	LAS 06:30 → DEN 09:20WN 2966	1h 12m Denver	DEN 10:32 → SAN 12:00WN 1700	5h 27m	100%	79%
Tight connection: often missed
Frontier Details →	LAS 18:34 → DEN 21:41F9 1994	48m Denver	DEN 22:29 → SAN 23:51F9 4989	5h 17m	74%	56%
Alaska Details →	LAS 15:12 → SEA 17:57AS 698	1h 09m Seattle	SEA 19:06 → SAN 22:07AS 336	6h 55m	71%	21%
Southwest Details →	LAS 15:00 → DEN 18:00WN 1382	1h 15m Denver	DEN 19:15 → SAN 20:40WN 1703	5h 40m	57%	11%

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 12m · leaves 06:30 0%

SEA · 1h 18m · leaves 06:02 2%

DFW · 1h 11m · leaves 05:02 8%

Afternoon and evening

DEN · 1h 15m · leaves 15:00 43%

SFO · 1h 08m · leaves 19:52 50%

PHX · 55m · leaves 19:45 54%

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.


Frontier F9 2016 LAS 00:59 → DEN Southwest WN 4331 DEN 06:32 → SAN Connection details →	2h 39m	6h 58m	93%	91%
Southwest WN 255 LAS 14:15 → LAX United UA 5415 LAX 18:50 → SAN Connection details →	3h 20m	5h 36m	100%	84%
Southwest WN 2255 LAS 18:30 → LAX Delta DL 3746 LAX 22:40 → SAN Connection details →	2h 55m	5h 10m	97%	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