Sun, Oct 4 has passed, so this is the 12-month record.

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

No clear winner: United’s MRY → SFO flights land within a few points of 64% on time whatever the hour.

Nonstops (seasonal or thin)


United	MRY	SFO	56m	64%	0.5%	733	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	MRY 13:54 → LAX 15:35UA 5523 · flown by SkyWest	1h 35m Los Angeles	LAX 17:10 → SFO 18:38UA 233	4h 44m	97%	81%
United Details →	MRY 05:00 → DEN 08:32UA 2754	2h 49m Denver	DEN 11:21 → SFO 13:04UA 1561	8h 04m	100%	72%
United Details →	MRY 12:29 → DEN 16:19UA 4713 · flown by SkyWest	1h 35m Denver	DEN 17:54 → SFO 19:40UA 1007	7h 11m	97%	65%
Alaska Details →	MRY 06:00 → SAN 07:34AS 3384 · flown by SkyWest	3h 30m San Diego	SAN 11:04 → SFO 12:51AS 3347 · flown by SkyWest	6h 51m	100%	59%
United Details →	MRY 07:05 → LAX 08:30UA 2655	2h 25m Los Angeles	LAX 10:55 → SFO 12:30UA 1791	5h 25m	97%	57%
American Details →	MRY 12:35 → PHX 14:31AA 3720 · flown by Envoy	2h 37m Phoenix	PHX 17:08 → SFO 19:09AA 1613	6h 34m	100%	52%
American Details →	MRY 16:14 → PHX 18:14AA 6268 · flown by SkyWest	2h 09m Phoenix	PHX 20:23 → SFO 22:23AA 686	6h 09m	96%	43%
American Details →	MRY 06:00 → PHX 07:57AA 6375 · flown by SkyWest	2h 56m Phoenix	PHX 10:53 → SFO 12:58AA 3199	6h 58m	99%	30%
Tight connection: often missed
American Details →	MRY 12:42 → DFW 18:25AA 2140	1h 03m Dallas-Fort Worth	DFW 19:28 → SFO 21:10AA 1430	8h 28m	74%	36%

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.

Afternoon and evening

DFW · 1h 03m · leaves 12:42 26%

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.


United UA 2655 MRY 07:05 → LAX Delta DL 2725 LAX 12:00 → SFO Connection details →	3h 30m	6h 23m	99%	66%
United UA 5523 MRY 13:54 → LAX Delta DL 1559 LAX 17:35 → SFO Connection details →	2h 00m	5h 02m	96%	65%
Alaska AS 3384 MRY 06:00 → SAN United UA 2309 SAN 11:01 → SFO Connection details →	3h 27m	6h 47m	99%	65%

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