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 2 in 3 on time.

Nonstops


Delta	SEA	HNL	6h 30m	79%	0.4%	789	Flying now
Alaska	SEA	HNL	6h 09m	62%	0.9%	1,541	Flying now
Hawaiian	SEA	HNL	6h 14m	62%	1.7%	603	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Honolulu on time. Total trip = scheduled departure to arrival, layover included (Honolulu is 3 h behind Seattle). Layovers up to 4 hours. Pick a connection for the details.


United Details →	SEA 05:15 → SFO 07:35UA 5676 · flown by SkyWest	1h 45m San Francisco	SFO 09:20 → HNL 11:43UA 1175	9h 28m	97%	89%
Southwest Details →	SEA 05:00 → SMF 06:50WN 3629	1h 40m Sacramento	SMF 08:30 → HNL 11:00WN 3781	9h 00m	100%	86%
Southwest Details →	SEA 06:15 → OAK 08:25WN 266	3h 00m Oakland	OAK 11:25 → HNL 13:45WN 2879	10h 30m	100%	84%
United Details →	SEA 13:30 → SFO 15:48UA 737	3h 12m San Francisco	SFO 19:00 → HNL 21:43UA 638	11h 13m	97%	84%
Alaska Details →	SEA 20:15 → LAS 22:55AS 704	3h 00m Las Vegas	LAS 01:55 → HNL 05:16 +1AS 817	12h 01m	99%	84%
United Details →	SEA 06:00 → LAX 08:44UA 1692	2h 21m Los Angeles	LAX 11:05 → HNL 13:56UA 1224	10h 56m	100%	84%
Alaska Details →	SEA 10:14 → ANC 13:00AS 1810	3h 00m Anchorage	ANC 16:00 → HNL 20:05AS 49	12h 51m	100%	84%
United Details →	SEA 10:29 → SFO 12:47UA 1482	3h 58m San Francisco	SFO 16:45 → HNL 19:25UA 1509	11h 56m	98%	84%
Tight connection: often missed
United Details →	SEA 13:30 → SFO 15:48UA 737	57m San Francisco	SFO 16:45 → HNL 19:25UA 1509	8h 55m	53%	45%
Alaska Details →	SEA 16:36 → SFO 18:48AS 1385	54m San Francisco	SFO 19:42 → HNL 22:11AS 843	8h 35m	60%	45%
United Details →	SEA 08:45 → SFO 11:03UA 2831	57m San Francisco	SFO 12:00 → HNL 14:35UA 1260	8h 50m	28%	19%

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

LAX · 1h 18m · leaves 06:03 8%

SFO · 57m · leaves 08:45 72%

Afternoon and evening

ANC · 54m · leaves 12:18 29%

LAX · 52m · leaves 17:10 32%

SFO · 57m · leaves 13:30 47%

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 929 SEA 10:15 → OGG Southwest WN 3096 OGG 15:45 → HNL Connection details →	2h 26m	9h 15m	96%	93%
Alaska AS 245 SEA 08:05 → OGG Southwest WN 676 OGG 14:15 → HNL Connection details →	2h 56m	9h 55m	98%	87%
Delta DL 340 SEA 14:30 → KOA Alaska AS 1177 KOA 20:45 → HNL Connection details →	3h 10m	10h 03m	98%	85%

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