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 ANC → JNU flights land within a few points of 88% on time whatever the hour.

Nonstops


Alaska	ANC	JNU	1h 42m	88%	0.3%	1,230	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Juneau on time. Total trip = scheduled departure to arrival, layover included. Layovers up to 4 hours. Pick a connection for the details.


Alaska Details →	ANC 00:29 → SEA 05:00AS 221	2h 08m Seattle	SEA 07:08 → JNU 08:44AS 61	8h 15m	100%	86%
Delta Details →	ANC 08:15 → SEA 12:53DL 1656	3h 52m Seattle	SEA 16:45 → JNU 18:19DL 2169	10h 04m	100%	82%
Alaska Details →	ANC 06:00 → SEA 10:35AS 82	3h 08m Seattle	SEA 13:43 → JNU 15:17AS 435	9h 17m	99%	77%
Alaska Details →	ANC 01:57 → SEA 06:28AS 98	3h 28m Seattle	SEA 09:56 → JNU 11:32AS 208	9h 35m	100%	75%
Alaska Details →	ANC 13:00 → SEA 17:34AS 402	2h 16m Seattle	SEA 19:50 → JNU 21:22AS 1559	8h 22m	100%	73%
Alaska Details →	ANC 14:44 → SEA 19:18AS 226	2h 05m Seattle	SEA 21:23 → JNU 22:55AS 71	8h 11m	97%	68%
Tight connection: often missed
Alaska Details →	ANC 06:00 → SEA 10:35AS 82	49m Seattle	SEA 11:24 → JNU 12:56AS 209	6h 56m	72%	52%

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 · 1h 11m · leaves 01:26 8%

Afternoon and evening

SEA · 1h 06m · leaves 15:43 12%

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 315 ANC 09:07 → SEA Delta DL 2169 SEA 16:45 → JNU Connection details →	3h 03m	9h 12m	97%	80%
Delta DL 853 ANC 06:00 → SEA Alaska AS 435 SEA 13:43 → JNU Connection details →	3h 00m	9h 17m	96%	75%
Delta DL 925 ANC 01:30 → SEA Alaska AS 208 SEA 09:56 → JNU Connection details →	3h 47m	10h 02m	98%	74%

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