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


Delta	PDX	SLC	1h 52m	91%	1.5%	1,699	Flying now
Alaska	PDX	SLC	1h 58m	87%	0.2%	847	Flying now
Frontier	PDX	SLC	1h 54m	66%few flights	0.0%	35	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Salt Lake City on time. Total trip = scheduled departure to arrival, layover included (Salt Lake City is 1 h ahead of Portland). Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	PDX 05:30 → SMF 07:00WN 3211	1h 05m Sacramento	SMF 08:05 → SLC 10:40WN 3827	4h 10m	98%	94%
United Details →	PDX 05:15 → SFO 07:01UA 1896	1h 39m San Francisco	SFO 08:40 → SLC 11:49UA 5605 · flown by SkyWest	5h 34m	99%	93%
Delta Details →	PDX 13:25 → LAX 15:51DL 2766	3h 24m Los Angeles	LAX 19:15 → SLC 22:05DL 2973	7h 40m	98%	90%
Delta Details →	PDX 06:30 → LAX 09:00DL 2947	2h 41m Los Angeles	LAX 11:41 → SLC 14:30DL 1194	7h 04m	99%	89%
Delta Details →	PDX 06:00 → MSP 11:12DL 2369	1h 17m Minneapolis	MSP 12:29 → SLC 14:22DL 2651	7h 22m	99%	88%
Delta Details →	PDX 05:30 → SEA 06:41DL 4008 · flown by SkyWest	2h 49m Seattle	SEA 09:30 → SLC 12:38DL 1016	6h 08m	98%	88%
Alaska Details →	PDX 05:00 → SEA 05:53AS 2431 · flown by Horizon	2h 55m Seattle	SEA 08:48 → SLC 11:55AS 360	5h 55m	100%	87%
Delta Details →	PDX 07:20 → SEA 08:34DL 4471 · flown by SkyWest	2h 31m Seattle	SEA 11:05 → SLC 14:11DL 1265	5h 51m	98%	84%
Tight connection: often missed
American Details →	PDX 11:54 → DFW 17:49AA 2287	59m Dallas-Fort Worth	DFW 18:48 → SLC 20:34AA 558	7h 40m	69%	33%
United Details →	PDX 13:14 → SFO 15:05UA 2279	1h 06m San Francisco	SFO 16:11 → SLC 19:11UA 543	4h 57m	54%	28%
United Details →	PDX 11:16 → SFO 13:07UA 1613	49m San Francisco	SFO 13:56 → SLC 16:55UA 2017	4h 39m	23%	15%

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

MSP · 1h 17m · leaves 06:00 1%

SMF · 1h 05m · leaves 05:30 2%

LAX · 55m · leaves 06:30 7%

Afternoon and evening

DEN · 1h 14m · leaves 16:15 10%

LAS · 1h 05m · leaves 16:25 20%

DFW · 59m · leaves 11:54 31%

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 1632 PDX 11:45 → SJC Delta DL 1260 SJC 17:01 → SLC Connection details →	3h 26m	7h 12m	100%	94%
Alaska AS 1449 PDX 07:36 → ONT Delta DL 3172 ONT 13:00 → SLC Connection details →	3h 04m	7h 11m	100%	93%
Alaska AS 3013 PDX 10:30 → IDA Delta DL 3765 IDA 15:22 → SLC Connection details →	2h 16m	5h 01m	100%	92%

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