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 83% on time.

Nonstops


Alaska	OAK	PDX	1h 43m	89%	1.0%	726	Flying now
Southwest	OAK	PDX	1h 40m	80%	0.4%	1,158	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 →	OAK 06:22 → SEA 08:26AS 491	1h 48m Seattle	SEA 10:14 → PDX 11:21AS 3090 · flown by SkyWest	4h 59m	98%	94%
Delta Details →	OAK 17:05 → SLC 20:00DL 3903 · flown by SkyWest	2h 50m Salt Lake City	SLC 22:50 → PDX 23:44DL 1373	6h 40m	99%	88%
Delta Details →	OAK 06:00 → SLC 08:55DL 4061 · flown by SkyWest	2h 20m Salt Lake City	SLC 11:15 → PDX 12:10DL 1209	6h 10m	98%	86%
Southwest Details →	OAK 05:00 → LAS 06:30WN 2325	2h 50m Las Vegas	LAS 09:20 → PDX 11:40WN 4132	6h 40m	100%	83%
Alaska Details →	OAK 14:55 → SEA 17:00AS 1464	3h 25m Seattle	SEA 20:25 → PDX 21:22AS 2387 · flown by Horizon	6h 27m	100%	83%
Alaska Details →	OAK 10:22 → SEA 12:26AS 705	1h 19m Seattle	SEA 13:45 → PDX 14:48AS 3204 · flown by SkyWest	4h 26m	95%	82%
Alaska Details →	OAK 10:37 → SAN 12:13AS 3313 · flown by SkyWest	1h 50m San Diego	SAN 14:03 → PDX 16:36AS 1402	5h 59m	96%	82%
Delta Details →	OAK 12:33 → SLC 15:29DL 4134 · flown by SkyWest	1h 56m Salt Lake City	SLC 17:25 → PDX 18:18DL 1238	5h 45m	98%	79%
Tight connection: often missed
Alaska Details →	OAK 14:55 → SEA 17:00AS 1464	59m Seattle	SEA 17:59 → PDX 18:56AS 2302 · flown by Horizon	4h 01m	63%	47%
Southwest Details →	OAK 12:15 → LAS 13:50WN 2205	50m Las Vegas	LAS 14:40 → PDX 16:55WN 2126	4h 40m	33%	20%
Southwest Details →	OAK 14:55 → DEN 18:20WN 3044	1h 05m Denver	DEN 19:25 → PDX 21:00WN 1670	6h 05m	38%	1%

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.

Afternoon and evening

SEA · 59m · leaves 14:55 37%

DEN · 1h 05m · leaves 14:55 62%

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 3397 OAK 05:32 → SEA Alaska AS 3090 SEA 10:14 → PDX Connection details →	2h 36m	5h 49m	98%	94%
Southwest WN 4421 OAK 06:02 → ONT Alaska AS 1699 ONT 10:54 → PDX Connection details →	3h 26m	7h 07m	100%	94%
Southwest WN 3087 OAK 13:55 → SNA Alaska AS 589 SNA 18:09 → PDX Connection details →	2h 44m	6h 36m	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