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 84% on time.

Nonstops


Alaska	SAN	PDX	2h 41m	87%	1.1%	1,625	Flying now
Southwest	SAN	PDX	2h 35m	62%	0.0%	160	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Alaska Details →	SAN 08:14 → OAK 09:57AS 3320 · flown by SkyWest	2h 04m Oakland	OAK 12:01 → PDX 13:44AS 3045 · flown by SkyWest	5h 30m	98%	96%
Alaska Details →	SAN 07:44 → SMF 09:36AS 2100 · flown by Horizon	2h 10m Sacramento	SMF 11:46 → PDX 13:18AS 621	5h 34m	98%	94%
Alaska Details →	SAN 12:30 → OAK 14:10AS 3218 · flown by SkyWest	3h 25m Oakland	OAK 17:35 → PDX 19:12AS 2304 · flown by Horizon	6h 42m	98%	94%
Alaska Details →	SAN 10:05 → RDM 12:25AS 2086 · flown by Horizon	3h 35m Redmond	RDM 16:00 → PDX 16:50AS 2167 · flown by Horizon	6h 45m	98%	91%
Alaska Details →	SAN 08:24 → STS 10:24AS 3233 · flown by SkyWest	1h 41m Santa Rosa	STS 12:05 → PDX 13:46AS 3009 · flown by SkyWest	5h 22m	96%	91%
Alaska Details →	SAN 09:55 → SJC 11:24AS 2091 · flown by Horizon	3h 07m San Jose	SJC 14:31 → PDX 16:15AS 1633	6h 20m	98%	89%
Southwest Details →	SAN 10:30 → SMF 12:05WN 3546	2h 10m Sacramento	SMF 14:15 → PDX 15:45WN 422	5h 15m	100%	88%
Alaska Details →	SAN 07:00 → DEN 10:33AS 1618	1h 29m Denver	DEN 12:02 → PDX 13:46AS 684	6h 46m	100%	88%
Tight connection: often missed
Alaska Details →	SAN 18:31 → SFO 20:12AS 3232 · flown by SkyWest	1h 56m San Francisco	SFO 22:08 → PDX 23:52AS 2023 · flown by Horizon	5h 21m	73%	37%
Alaska Details →	SAN 16:14 → SFO 17:49AS 2314 · flown by Horizon	57m San Francisco	SFO 18:46 → PDX 20:31AS 525	4h 17m	27%	21%
American Details →	SAN 16:32 → DFW 21:49AA 2485	1h 03m Dallas-Fort Worth	DFW 22:52 → PDX 00:52 +1AA 2620	8h 21m	45%	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

DEN · 1h 19m · leaves 06:35 2%

LAS · 1h 05m · leaves 06:35 4%

SEA · 55m · leaves 06:18 13%

Afternoon and evening

LAS · 48m · leaves 16:13 59%

DEN · 1h 05m · leaves 14:55 61%

SFO · 57m · leaves 16:14 73%

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.


Southwest WN 3544 SAN 06:45 → SMF Alaska AS 621 SMF 11:46 → PDX Connection details →	3h 11m	6h 33m	100%	98%
Southwest WN 4198 SAN 07:15 → OAK Alaska AS 3045 OAK 12:01 → PDX Connection details →	3h 11m	6h 29m	99%	97%
Southwest WN 1283 SAN 07:05 → RNO Alaska AS 3121 RNO 12:07 → PDX Connection details →	3h 22m	6h 41m	100%	94%

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