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


Alaska	RNO	SAN	1h 40m	78%	2.8%	541	Flying now
Southwest	RNO	SAN	1h 35m	71%	0.5%	939	Flying now
Spirit	RNO	SAN	–	89%few flights	0.0%	9	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 →	RNO 06:00 → LAX 07:38UA 2096	1h 22m Los Angeles	LAX 09:00 → SAN 10:08UA 4643 · flown by SkyWest	4h 08m	97%	85%
Delta Details →	RNO 19:00 → LAX 20:45DL 4126 · flown by SkyWest	1h 55m Los Angeles	LAX 22:40 → SAN 23:40DL 3746 · flown by SkyWest	4h 40m	95%	82%
Delta Details →	RNO 05:30 → SLC 07:57DL 1650	3h 18m Salt Lake City	SLC 11:15 → SAN 12:17DL 1296	6h 47m	98%	81%
United Details →	RNO 05:30 → DEN 08:47UA 225	2h 28m Denver	DEN 11:15 → SAN 12:41UA 1940	7h 11m	99%	81%
Delta Details →	RNO 17:45 → SLC 20:21DL 3732 · flown by SkyWest	2h 34m Salt Lake City	SLC 22:55 → SAN 23:50DL 1202	6h 08m	99%	81%
Delta Details →	RNO 10:37 → LAX 12:21DL 4099 · flown by SkyWest	1h 50m Los Angeles	LAX 14:11 → SAN 15:11DL 4001 · flown by SkyWest	4h 34m	98%	80%
United Details →	RNO 09:05 → DEN 12:21UA 347	1h 09m Denver	DEN 13:30 → SAN 14:55UA 1302	5h 50m	92%	79%
United Details →	RNO 18:35 → LAX 20:30UA 5908 · flown by SkyWest	2h 26m Los Angeles	LAX 22:56 → SAN 23:54UA 594	5h 19m	99%	79%
Tight connection: often missed
United Details →	RNO 14:05 → SFO 15:30UA 4779 · flown by SkyWest	1h 17m San Francisco	SFO 16:47 → SAN 18:39UA 1561	4h 34m	69%	40%
United Details →	RNO 08:00 → SFO 09:15UA 2317	50m San Francisco	SFO 10:05 → SAN 11:51UA 2177	3h 51m	11%	8%
United Details →	RNO 18:55 → SFO 20:13UA 2850	47m San Francisco	SFO 21:00 → SAN 22:49UA 1863	3h 54m	5%	4%

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

PHX · 1h 10m · leaves 05:00 4%

SFO · 49m · leaves 06:00 14%

Afternoon and evening

SEA · 1h 10m · leaves 14:46 20%

DEN · 55m · leaves 15:05 44%

SFO · 47m · leaves 18:55 95%

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 3716 RNO 10:30 → DEN United UA 1281 DEN 15:55 → SAN Connection details →	2h 15m	6h 50m	100%	85%
Delta DL 3719 RNO 09:05 → SLC Alaska AS 3123 SLC 14:39 → SAN Connection details →	2h 56m	6h 41m	100%	83%
United UA 5908 RNO 18:35 → LAX Delta DL 3746 LAX 22:40 → SAN Connection details →	2h 10m	5h 05m	96%	82%

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