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 45-minute layover misses 1 time in 10 at 11 am and almost half the time at 6 pm.

Nonstops


United	LAX	SEA	3h 06m	89%	0.6%	942	Flying now
Delta	LAX	SEA	2h 53m	87%	0.7%	2,225	Flying now
Alaska	LAX	SEA	2h 55m	86%	0.9%	3,304	Flying now
Frontier	LAX	SEA	3h 01m	82%	3.4%	295	Flying now
American	LAX	SEA	2h 58m	79%	0.6%	697	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.


Delta Details →	LAX 07:55 → SJC 09:10DL 4451 · flown by SkyWest	2h 19m San Jose	SJC 11:29 → SEA 13:59DL 3736 · flown by SkyWest	6h 04m	100%	92%
Delta Details →	LAX 09:13 → SMF 10:46DL 3755 · flown by SkyWest	2h 14m Sacramento	SMF 13:00 → SEA 15:16DL 4125 · flown by SkyWest	6h 03m	98%	91%
Delta Details →	LAX 13:06 → GEG 15:48DL 3794 · flown by SkyWest	1h 49m Spokane	GEG 17:37 → SEA 19:05DL 3857 · flown by SkyWest	5h 59m	98%	91%
Southwest Details →	LAX 17:45 → SMF 19:10WN 4500	2h 45m Sacramento	SMF 21:55 → SEA 23:50WN 4985	6h 05m	96%	90%
Delta Details →	LAX 08:19 → PHX 09:55DL 4119 · flown by SkyWest	2h 10m Phoenix	PHX 12:05 → SEA 15:18DL 2419	6h 59m	99%	90%
Delta Details →	LAX 17:05 → SLC 19:59DL 2311	2h 46m Salt Lake City	SLC 22:45 → SEA 23:59DL 2998	6h 54m	97%	88%
Delta Details →	LAX 05:35 → SLC 08:30DL 2906	3h 05m Salt Lake City	SLC 11:35 → SEA 12:52DL 2995	7h 17m	99%	88%
Delta Details →	LAX 07:10 → SMF 08:41DL 3700 · flown by SkyWest	2h 53m Sacramento	SMF 11:34 → SEA 13:45DL 3881 · flown by SkyWest	6h 38m	98%	88%
Tight connection: often missed
Delta Details →	LAX 14:11 → SAN 15:11DL 4001 · flown by SkyWest	52m San Diego	SAN 16:03 → SEA 19:05DL 2572	4h 54m	73%	62%
United Details →	LAX 16:14 → SFO 17:42UA 2019	46m San Francisco	SFO 18:28 → SEA 20:53UA 1577	4h 39m	50%	35%
American Details →	LAX 13:53 → DFW 19:14AA 2041	59m Dallas-Fort Worth	DFW 20:13 → SEA 22:26AA 2003	8h 33m	48%	25%

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

PDX · 1h 14m · leaves 07:00 3%

LAS · 50m · leaves 05:35 9%

SAN · 1h 14m · leaves 08:50 10%

Afternoon and evening

SAN · 52m · leaves 14:11 27%

SFO · 46m · leaves 16:14 50%

DFW · 59m · leaves 13:53 52%

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 5858 LAX 16:30 → SMF Southwest WN 4985 SMF 21:55 → SEA Connection details →	3h 49m	7h 20m	100%	94%
Alaska AS 2328 LAX 13:15 → MFR Delta DL 3770 MFR 17:25 → SEA Connection details →	2h 11m	5h 49m	98%	90%
Southwest WN 4894 LAX 06:20 → SMF Alaska AS 1468 SMF 10:23 → SEA Connection details →	2h 38m	6h 02m	100%	90%

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