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 (seasonal or thin)


Southwest	SJC	GEG	2h 05m	76%	0.0%	238	Flying now
Alaska	SJC	GEG	–	83%few flights	0.0%	6	Not flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

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


Alaska Details →	SJC 09:46 → PDX 11:31AS 2256 · flown by Horizon	2h 59m Portland	PDX 14:30 → GEG 15:41AS 3262 · flown by SkyWest	5h 55m	98%	96%
Delta Details →	SJC 09:55 → LAX 11:20DL 4451 · flown by SkyWest	1h 46m Los Angeles	LAX 13:06 → GEG 15:48DL 3794 · flown by SkyWest	5h 53m	98%	91%
Alaska + Deltatwo ticketsDetails →	SJC 10:19 → SEA 12:30AS 1311	3h 10m Seattle	SEA 15:40 → GEG 16:57DL 3857 · flown by SkyWest	6h 38m	100%	91%
Southwest + Alaskatwo ticketsDetails →	SJC 06:00 → SEA 08:20WN 3632	1h 35m Seattle	SEA 09:55 → GEG 11:00AS 2200 · flown by Horizon	5h 00m	100%	90%
Southwest + Deltatwo ticketsDetails →	SJC 14:10 → SEA 16:20WN 4982	3h 36m Seattle	SEA 19:56 → GEG 21:12DL 3677 · flown by SkyWest	7h 02m	100%	89%
Southwest + Alaskatwo ticketsDetails →	SJC 14:30 → LAX 15:50WN 940	3h 55m Los Angeles	LAX 19:45 → GEG 22:15AS 1614	7h 45m	100%	87%
Southwest + Alaskatwo ticketsDetails →	SJC 06:30 → PDX 08:18WN 3693	2h 12m Portland	PDX 10:30 → GEG 11:45AS 250	5h 15m	100%	86%
Delta Details →	SJC 16:30 → LAX 17:56DL 3822 · flown by SkyWest	3h 29m Los Angeles	LAX 21:25 → GEG 00:05 +1DL 3576 · flown by SkyWest	7h 35m	100%	86%
Tight connection: often missed
Alaska Details →	SJC 08:20 → SEA 10:31AS 1426	52m Seattle	SEA 11:23 → GEG 12:29AS 449	4h 09m	28%	17%

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 · 46m · leaves 08:00 9%

SEA · 46m · leaves 07:20 14%

Afternoon and evening

PDX · 1h 15m · leaves 14:31 2%

SLC · 1h 08m · leaves 19:10 14%

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.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

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