Itineraries flown on 20+ days in the Jun 6 – Jul 31, 2026 schedule · each leg’s record Aug 2025 – Jul 2026

No clear winner: Delta’s PSC → SLC flights land within a few points of 94% on time whatever the hour.

Nonstops


Delta	PSC	SLC	1h 47m	94%	0.2%	1,178	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 Pasco). Layovers up to 4 hours. Pick a connection for the details.


Alaska Details →	PSC 05:23 → PDX 06:18AS 3109 · flown by SkyWest	1h 34m Portland	PDX 07:52 → SLC 10:45AS 2333 · flown by Horizon	4h 22m	100%	91%
Delta Details →	PSC 05:25 → SEA 06:39DL 3972 · flown by SkyWest	2h 51m Seattle	SEA 09:30 → SLC 12:38DL 1016	6h 13m	96%	86%
Alaska Details →	PSC 06:15 → SEA 07:20AS 2165 · flown by Horizon	1h 28m Seattle	SEA 08:48 → SLC 11:55AS 360	4h 40m	98%	85%
Delta Details →	PSC 15:25 → SEA 16:40DL 3891 · flown by SkyWest	3h 10m Seattle	SEA 19:50 → SLC 22:55DL 1239	6h 30m	100%	81%
Alaska Details →	PSC 12:56 → SEA 14:02AS 2306 · flown by Horizon	2h 45m Seattle	SEA 16:47 → SLC 19:50AS 373	5h 54m	98%	79%
United Details →	PSC 05:14 → DEN 08:36UA 1049	3h 04m Denver	DEN 11:40 → SLC 13:13UA 1963	6h 59m	100%	77%
United Details →	PSC 12:08 → DEN 15:42UA 4721 · flown by SkyWest	2h 03m Denver	DEN 17:45 → SLC 19:25UA 5762 · flown by SkyWest	6h 17m	95%	69%
Alaska Details →	PSC 10:33 → SEA 11:38AS 2171 · flown by Horizon	3h 07m Seattle	SEA 14:45 → SLC 17:48AS 368	6h 15m	100%	66%
Tight connection: often missed
Alaska Details →	PSC 15:59 → PDX 16:50AS 2471 · flown by Horizon	50m Portland	PDX 17:40 → SLC 20:41AS 3291 · flown by SkyWest	3h 42m	57%	45%

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 · 1h 19m · leaves 15:25 5%

DEN · 47m · leaves 12:08 19%

PDX · 50m · leaves 15:59 43%

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 3109 PSC 05:23 → PDX Delta DL 1203 PDX 09:45 → SLC Connection details →	3h 27m	6h 13m	100%	89%
American AA 6360 PSC 05:15 → PHX Delta DL 1447 PHX 09:45 → SLC Connection details →	1h 45m	6h 08m	95%	88%
Alaska AS 2165 PSC 06:15 → SEA Delta DL 1016 SEA 09:30 → SLC Connection details →	2h 10m	5h 23m	98%	86%

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