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 77% on time.

Nonstops


Delta	SEA	ANC	3h 40m	78%	0.6%	1,614	Flying now
Alaska	SEA	ANC	3h 45m	77%	0.9%	5,004	Flying now
Hawaiian	SEA	ANC	3h 45m	59%	0.0%	61	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Alaska Details →	SEA 23:27 → FAI 02:15AS 1512	2h 45m Fairbanks	FAI 05:00 → ANC 06:04 +1AS 2060 · flown by Horizon	7h 37m	100%	92%
Alaska Details →	SEA 13:43 → JNU 15:17AS 435	3h 42m Juneau	JNU 18:59 → ANC 20:48AS 1613	8h 05m	100%	89%
Alaska Details →	SEA 13:45 → PDX 14:48AS 3204 · flown by SkyWest	3h 02m Portland	PDX 17:50 → ANC 20:38AS 271	7h 53m	98%	89%
United Details →	SEA 13:30 → SFO 15:48UA 737	2h 59m San Francisco	SFO 18:47 → ANC 22:46UA 1594	10h 16m	96%	85%
Alaska Details →	SEA 10:14 → PDX 11:21AS 3090 · flown by SkyWest	3h 09m Portland	PDX 14:30 → ANC 17:16AS 1565	8h 02m	100%	83%
Alaska Details →	SEA 12:00 → FAI 14:55AS 1507	2h 20m Fairbanks	FAI 17:15 → ANC 18:18AS 2102 · flown by Horizon	7h 18m	98%	82%
Alaska Details →	SEA 06:42 → PDX 07:37AS 2432 · flown by Horizon	2h 53m Portland	PDX 10:30 → ANC 13:22AS 775	7h 40m	100%	79%
Alaska Details →	SEA 13:38 → LAX 16:25AS 696	3h 06m Los Angeles	LAX 19:31 → ANC 23:55AS 1899	11h 17m	100%	79%
Tight connection: often missed
Alaska Details →	SEA 16:36 → SFO 18:48AS 1385	59m San Francisco	SFO 19:47 → ANC 23:41AS 212	8h 05m	69%	49%
Alaska Details →	SEA 09:53 → FAI 12:44AS 1552	50m Fairbanks	FAI 13:34 → ANC 14:41AS 1415	5h 48m	66%	48%
American Details →	SEA 15:20 → PHX 18:25AA 3440 · flown by Envoy	53m Phoenix	PHX 19:18 → ANC 23:59AA 1981	9h 39m	65%	39%

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

PHX · 53m · leaves 15:20 35%

LAX · 47m · leaves 15:59 43%

SFO · 1h 00m · leaves 15:33 44%

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 4062 SEA 13:35 → PDX Alaska AS 271 PDX 17:50 → ANC Connection details →	3h 04m	8h 03m	98%	89%
Alaska AS 680 SEA 13:20 → SFO United UA 1594 SFO 18:47 → ANC Connection details →	3h 16m	10h 26m	97%	85%
Delta DL 3818 SEA 09:30 → PDX Alaska AS 1565 PDX 14:30 → ANC Connection details →	3h 51m	8h 46m	100%	84%

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