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 85% on time.

Nonstops


Alaska	PDX	SJC	1h 52m	89%	0.6%	1,624	Flying now
Southwest	PDX	SJC	1h 45m	78%	0.4%	947	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Alaska Details →	PDX 05:00 → SEA 05:53AS 2431 · flown by Horizon	1h 14m Seattle	SEA 07:07 → SJC 09:23AS 1448	4h 23m	96%	92%
Delta Details →	PDX 05:45 → SLC 08:39DL 1270	3h 01m Salt Lake City	SLC 11:40 → SJC 12:38DL 1254	6h 53m	100%	90%
Delta Details →	PDX 06:30 → LAX 09:00DL 2947	3h 57m Los Angeles	LAX 12:57 → SJC 14:19DL 3842 · flown by SkyWest	7h 49m	99%	90%
Southwest Details →	PDX 05:20 → PHX 07:55WN 4666	1h 45m Phoenix	PHX 09:40 → SJC 11:35WN 3336	6h 15m	93%	89%
Delta Details →	PDX 05:30 → SEA 06:41DL 4008 · flown by SkyWest	1h 44m Seattle	SEA 08:25 → SJC 10:49DL 3736 · flown by SkyWest	5h 19m	96%	87%
Alaska Details →	PDX 10:35 → SEA 11:43AS 3431 · flown by SkyWest	2h 35m Seattle	SEA 14:18 → SJC 16:32AS 1366	5h 57m	98%	87%
Delta Details →	PDX 10:53 → LAX 13:21DL 2975	1h 11m Los Angeles	LAX 14:32 → SJC 15:46DL 3822 · flown by SkyWest	4h 53m	93%	86%
Delta Details →	PDX 09:45 → SLC 12:35DL 1203	2h 36m Salt Lake City	SLC 15:11 → SJC 16:07DL 1260	6h 22m	99%	85%
Tight connection: often missed
Delta Details →	PDX 09:30 → SEA 10:55DL 3953 · flown by SkyWest	50m Seattle	SEA 11:45 → SJC 14:11DL 3789 · flown by SkyWest	4h 41m	74%	61%
Alaska Details →	PDX 13:48 → SEA 14:43AS 2205 · flown by Horizon	59m Seattle	SEA 15:42 → SJC 17:53AS 319	4h 05m	68%	35%
Alaska Details →	PDX 09:19 → SEA 10:21AS 427	47m Seattle	SEA 11:08 → SJC 13:20AS 335	4h 01m	24%	16%

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

SEA · 1h 14m · leaves 05:00 4%

Afternoon and evening

SLC · 1h 13m · leaves 13:15 6%

SEA · 1h 15m · leaves 15:30 11%

LAX · 56m · leaves 17:37 13%

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 1404 PDX 07:00 → SNA Southwest WN 3861 SNA 12:00 → SJC Connection details →	2h 23m	6h 25m	99%	90%
Alaska AS 2161 PDX 07:00 → BOI Southwest WN 714 BOI 12:20 → SJC Connection details →	3h 01m	6h 05m	100%	89%
Alaska AS 627 PDX 07:37 → LAS Southwest WN 1242 LAS 12:10 → SJC Connection details →	2h 15m	6h 08m	98%	89%

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