Sun, Oct 4 has passed, so this is the 12-month record.

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 9 in 10 on time.

Nonstops (seasonal or thin)


Alaska	FAT	PDX	1h 59m	91%	1.0%	708	Flying now
Allegiant	FAT	PDX	–	100%few flights	0.0%	3	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 →	FAT 07:00 → SEA 09:22AS 3219 · flown by SkyWest	52m Seattle	SEA 10:14 → PDX 11:21AS 3090 · flown by SkyWest	4h 21m	93%	89%
Delta Details →	FAT 17:13 → SLC 20:00DL 3777 · flown by SkyWest	2h 50m Salt Lake City	SLC 22:50 → PDX 23:44DL 1373	6h 32m	99%	88%
Delta Details →	FAT 09:48 → SLC 12:34DL 3786 · flown by SkyWest	2h 50m Salt Lake City	SLC 15:24 → PDX 16:19DL 1244	6h 31m	100%	86%
Delta Details →	FAT 06:09 → SLC 08:55DL 4138 · flown by SkyWest	2h 20m Salt Lake City	SLC 11:15 → PDX 12:10DL 1209	6h 01m	98%	85%
Alaska Details →	FAT 08:46 → SAN 10:12AS 3409 · flown by SkyWest	3h 51m San Diego	SAN 14:03 → PDX 16:36AS 1402	7h 50m	100%	84%
Southwest Details →	FAT 05:25 → LAS 06:35WN 1842	2h 45m Las Vegas	LAS 09:20 → PDX 11:40WN 4132	6h 15m	100%	83%
Alaska Details →	FAT 06:00 → SAN 07:24AS 3402 · flown by SkyWest	3h 40m San Diego	SAN 11:04 → PDX 13:43AS 576	7h 43m	99%	83%
United Details →	FAT 10:21 → SFO 11:25UA 5737 · flown by SkyWest	3h 30m San Francisco	SFO 14:55 → PDX 16:47UA 2851	6h 26m	94%	83%
Tight connection: often missed
United Details →	FAT 06:30 → SFO 07:34UA 5338 · flown by SkyWest	48m San Francisco	SFO 08:22 → PDX 10:20UA 2265	3h 50m	70%	63%
United Details →	FAT 18:40 → SFO 19:44UA 5349 · flown by SkyWest	1h 06m San Francisco	SFO 20:50 → PDX 22:48UA 2413	4h 08m	66%	35%
Alaska Details →	FAT 08:46 → SAN 10:12AS 3409 · flown by SkyWest	52m San Diego	SAN 11:04 → PDX 13:43AS 576	4h 57m	35%	30%

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 · 52m · leaves 07:00 7%

SFO · 48m · leaves 06:30 30%

SAN · 52m · leaves 08:46 65%

Afternoon and evening

SFO · 1h 06m · leaves 18:40 34%

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.


Delta DL 4138 FAT 06:09 → SLC Alaska AS 3117 SLC 12:46 → PDX Connection details →	3h 51m	7h 40m	98%	90%
United UA 1756 FAT 06:00 → LAX Frontier F9 4499 LAX 09:18 → PDX Connection details →	2h 06m	5h 41m	92%	87%
United UA 5307 FAT 13:58 → LAX Alaska AS 1397 LAX 18:27 → PDX Connection details →	3h 04m	6h 50m	97%	87%

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