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

No clear winner: Alaska’s SEA → JAC flights land within a few points of 9 in 10 on time whatever the hour.

Nonstops (seasonal or thin)


Alaska	SEA	JAC	2h 08m	90%	0.0%	203	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Delta Details →	SEA 05:30 → SLC 08:30DL 1128	1h 05m Salt Lake City	SLC 09:35 → JAC 10:47DL 4470 · flown by SkyWest	4h 17m	95%	88%
United Details →	SEA 13:30 → SFO 15:48UA 737	2h 22m San Francisco	SFO 18:10 → JAC 21:30UA 1958	7h 00m	92%	86%
Delta Details →	SEA 09:30 → SLC 12:38DL 1016	3h 17m Salt Lake City	SLC 15:55 → JAC 17:00DL 417	6h 30m	99%	85%
United Details →	SEA 05:00 → DEN 08:43UA 2601	2h 32m Denver	DEN 11:15 → JAC 12:46UA 2193	6h 46m	99%	82%
United Details →	SEA 08:56 → DEN 12:45UA 1505	1h 10m Denver	DEN 13:55 → JAC 15:25UA 1537	5h 29m	94%	78%
Delta Details →	SEA 07:15 → SLC 10:23DL 2858	47m Salt Lake City	SLC 11:10 → JAC 12:16DL 2282	4h 01m	92%	78%
Delta Details →	SEA 12:05 → MSP 17:37DL 941	1h 13m Minneapolis	MSP 18:50 → JAC 20:30DL 3925 · flown by SkyWest	7h 25m	92%	77%
Delta Details →	SEA 13:30 → SLC 16:40DL 1120	1h 50m Salt Lake City	SLC 18:30 → JAC 19:37DL 4025 · flown by SkyWest	5h 11m	95%	76%
Tight connection: often missed
United Details →	SEA 14:33 → DEN 18:22UA 333	1h 03m Denver	DEN 19:25 → JAC 20:58UA 1306	5h 25m	71%	53%

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

SLC · 1h 05m · leaves 05:30 5%

Afternoon and evening

MSP · 1h 13m · leaves 12:05 8%

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 680 SEA 13:20 → SFO United UA 1958 SFO 18:10 → JAC Connection details →	2h 39m	7h 10m	93%	87%
Alaska AS 360 SEA 08:48 → SLC Delta DL 417 SLC 15:55 → JAC Connection details →	4h 00m	7h 12m	100%	87%
Southwest WN 3397 SEA 07:50 → DEN United UA 1537 DEN 13:55 → JAC Connection details →	2h 30m	6h 35m	98%	82%

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