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 75-minute layover misses 2% of the time at 8 am and 1 time in 4 at 8 pm.

Nonstops


United	SFO	PDX	1h 53m	81%	0.2%	2,029	Flying now
Alaska	SFO	PDX	1h 47m	76%	1.2%	1,688	Flying now
Frontier	SFO	PDX	–	80%few flights	16.7%	6	Not 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 →	SFO 06:03 → SEA 08:13AS 620	2h 01m Seattle	SEA 10:14 → PDX 11:21AS 3090 · flown by SkyWest	5h 18m	98%	94%
Alaska Details →	SFO 10:15 → LAX 11:44AS 1602	2h 43m Los Angeles	LAX 14:27 → PDX 16:47AS 1315	6h 32m	98%	89%
Alaska Details →	SFO 09:28 → SNA 11:11AS 3450 · flown by SkyWest	2h 54m Santa Ana	SNA 14:05 → PDX 16:29AS 712	7h 01m	99%	88%
Delta Details →	SFO 05:55 → SEA 08:11DL 2721	1h 19m Seattle	SEA 09:30 → PDX 10:39DL 3818 · flown by SkyWest	4h 44m	98%	87%
Delta Details →	SFO 07:00 → LAX 08:30DL 1598	1h 30m Los Angeles	LAX 10:00 → PDX 12:25DL 2766	5h 25m	98%	86%
Alaska Details →	SFO 13:51 → LAX 15:22AS 1604	3h 05m Los Angeles	LAX 18:27 → PDX 20:48AS 1397	6h 57m	98%	86%
Delta Details →	SFO 05:50 → SLC 08:42DL 1331	2h 33m Salt Lake City	SLC 11:15 → PDX 12:10DL 1209	6h 20m	99%	86%
Alaska Details →	SFO 07:25 → LAS 09:05AS 718	1h 55m Las Vegas	LAS 11:00 → PDX 13:20AS 1467	5h 55m	97%	85%
Tight connection: often missed
Alaska Details →	SFO 15:49 → LAS 17:30AS 776	57m Las Vegas	LAS 18:27 → PDX 20:46AS 779	4h 57m	59%	48%
Alaska Details →	SFO 12:27 → SEA 14:35AS 630	1h 20m Seattle	SEA 15:55 → PDX 16:55AS 686	4h 28m	58%	42%
Alaska Details →	SFO 09:00 → SEA 11:15AS 1327	50m Seattle	SEA 12:05 → PDX 13:06AS 2181 · flown by Horizon	4h 06m	58%	34%

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 19m · leaves 05:55 2%

DEN · 55m · leaves 05:10 10%

LAX · 1h 16m · leaves 08:30 19%

Afternoon and evening

LAX · 1h 05m · leaves 14:30 40%

LAS · 57m · leaves 15:49 41%

DEN · 1h 15m · leaves 14:35 83%

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.


United UA 2153 SFO 10:28 → RDM Alaska AS 2167 RDM 16:00 → PDX Connection details →	3h 48m	6h 22m	100%	95%
Southwest WN 2222 SFO 06:05 → LAX Frontier F9 4499 LAX 09:18 → PDX Connection details →	1h 43m	5h 36m	99%	94%
Delta DL 2721 SFO 05:55 → SEA Alaska AS 3090 SEA 10:14 → PDX Connection details →	2h 03m	5h 26m	98%	93%

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