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

No clear winner: Alaska’s MRY → SEA flights land within a few points of 4 in 5 on time whatever the hour.

Nonstops (seasonal or thin)


Alaska	MRY	SEA	2h 20m	81%	1.2%	334	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	MRY 07:05 → LAX 08:30UA 2655	3h 13m Los Angeles	LAX 11:43 → SEA 14:36UA 325	7h 31m	99%	88%
United Details →	MRY 05:00 → DEN 08:32UA 2754	2h 50m Denver	DEN 11:22 → SEA 13:22UA 1424	8h 22m	100%	86%
American Details →	MRY 12:35 → PHX 14:31AA 3720 · flown by Envoy	3h 24m Phoenix	PHX 17:55 → SEA 21:05AA 4307 · flown by Envoy	8h 30m	100%	84%
United Details →	MRY 13:54 → LAX 15:35UA 5523 · flown by SkyWest	3h 32m Los Angeles	LAX 19:07 → SEA 22:00UA 684	8h 06m	100%	84%
United Details →	MRY 12:00 → SFO 12:56UA 5557 · flown by SkyWest	3h 31m San Francisco	SFO 16:27 → SEA 18:47UA 2279	6h 47m	96%	72%
Alaska Details →	MRY 06:00 → SAN 07:34AS 3384 · flown by SkyWest	2h 35m San Diego	SAN 10:09 → SEA 13:13AS 1477	7h 13m	99%	69%
United Details →	MRY 08:00 → SFO 08:56UA 5502 · flown by SkyWest	3h 14m San Francisco	SFO 12:10 → SEA 14:30UA 2744	6h 30m	94%	67%
Alaska Details →	MRY 15:05 → SAN 16:39AS 3221 · flown by SkyWest	3h 56m San Diego	SAN 20:35 → SEA 23:41AS 1362	8h 36m	96%	66%
Tight connection: often missed
Alaska Details →	MRY 15:05 → SAN 16:39AS 3221 · flown by SkyWest	56m San Diego	SAN 17:35 → SEA 20:35AS 417	5h 30m	50%	34%
United Details →	MRY 12:00 → SFO 12:56UA 5557 · flown by SkyWest	1h 04m San Francisco	SFO 14:00 → SEA 16:20UA 1265	4h 20m	49%	28%
United Details →	MRY 08:00 → SFO 08:56UA 5502 · flown by SkyWest	1h 19m San Francisco	SFO 10:15 → SEA 12:34UA 2192	4h 34m	41%	19%

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

SAN · 1h 06m · leaves 06:00 7%

SFO · 1h 19m · leaves 08:00 59%

Afternoon and evening

SAN · 56m · leaves 15:05 50%

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 1045 LAX 11:59 → SEA Connection details →	3h 29m	7h 49m	99%	87%
American AA 6375 MRY 06:00 → PHX Alaska AS 603 PHX 11:23 → SEA Connection details →	3h 26m	8h 30m	99%	86%
United UA 5523 MRY 13:54 → LAX Alaska AS 1301 LAX 18:09 → SEA Connection details →	2h 34m	7h 02m	98%	85%

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