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 one-hour layover misses 2% of the time at 6 am and 23% of the time at 5 pm.

Nonstops


United	GEG	SFO	2h 28m	75%	0.4%	701	Flying now
Alaska	GEG	SFO	2h 20m	68%	1.1%	348	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.


Alaska Details →	GEG 08:15 → SAN 11:03AS 673	2h 27m San Diego	SAN 13:30 → SFO 15:14AS 3352 · flown by SkyWest	6h 59m	99%	73%
Delta Details →	GEG 17:37 → SEA 19:05DL 3857 · flown by SkyWest	2h 40m Seattle	SEA 21:45 → SFO 00:06 +1DL 2635	6h 29m	100%	71%
Delta Details →	GEG 09:20 → SEA 10:55DL 3830 · flown by SkyWest	3h 35m Seattle	SEA 14:30 → SFO 16:50DL 3707 · flown by SkyWest	7h 30m	99%	69%
Alaska Details →	GEG 11:40 → SEA 12:50AS 2262 · flown by Horizon	3h 46m Seattle	SEA 16:36 → SFO 18:48AS 1385	7h 08m	100%	68%
Delta Details →	GEG 06:20 → LAX 09:16DL 3696 · flown by SkyWest	2h 44m Los Angeles	LAX 12:00 → SFO 13:26DL 2725	7h 08m	99%	66%
Alaska Details →	GEG 09:06 → SEA 10:18AS 2069 · flown by Horizon	3h 02m Seattle	SEA 13:20 → SFO 15:31AS 680	6h 25m	98%	66%
Alaska Details →	GEG 07:23 → SEA 08:34AS 364	3h 08m Seattle	SEA 11:42 → SFO 14:04AS 655	6h 41m	94%	66%
Delta Details →	GEG 09:50 → SLC 12:41DL 4444 · flown by SkyWest	2h 29m Salt Lake City	SLC 15:10 → SFO 16:12DL 1088	6h 25m	100%	65%
Tight connection: often missed
Alaska Details →	GEG 19:41 → PDX 20:50AS 2407 · flown by Horizon	55m Portland	PDX 21:45 → SFO 23:36AS 2112 · flown by Horizon	3h 55m	73%	46%
Alaska Details →	GEG 14:39 → SEA 15:49AS 2119 · flown by Horizon	47m Seattle	SEA 16:36 → SFO 18:48AS 1385	4h 09m	48%	33%
Alaska Details →	GEG 15:16 → PDX 16:32AS 3202 · flown by SkyWest	1h 04m Portland	PDX 17:36 → SFO 19:30AS 504	4h 14m	20%	12%

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 09m · leaves 05:00 2%

SEA · 48m · leaves 05:07 5%

LAX · 58m · leaves 06:20 14%

Afternoon and evening

SLC · 56m · leaves 19:08 15%

DEN · 57m · leaves 13:41 23%

PDX · 1h 04m · leaves 15:16 80%

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.


Alaska AS 3349 GEG 11:51 → LAX United UA 233 LAX 17:10 → SFO Connection details →	2h 24m	6h 47m	98%	81%
Delta DL 3799 GEG 16:20 → LAX American AA 6510 LAX 22:32 → SFO Connection details →	3h 18m	7h 39m	98%	80%
Alaska AS 673 GEG 08:15 → SAN United UA 1763 SAN 13:39 → SFO Connection details →	2h 36m	7h 04m	99%	73%

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