Seattle (SEA) to Honolulu (HNL): 2,677 miles (4,308 km) great-circle, about 5h 50m nonstop by our estimate. Cheapest fare observed: $743 round-trip on Alaska Airlines, with 1 stop, departing June 14, 2026.
$743 round-trip, Alaska Airlines AS1385, departing 2026-06-14 at 16:36, returning 2026-06-21. The recorded itinerary left on a Sunday, returning on a Sunday 7 nights later; the fare was observed 50 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $743, it ranked 18th of the 30 round-trip fares we recorded from SEA (median $591). That is 27.8 cents per great-circle mile (round-trip price over one-way distance), above the SEA median of 19.2 cents across 30 round-trip routes.
Routes from SEA of similar length: Orlando (2,544 mi) at $372 and Boston (2,489 mi) at $289.
Alaska Airlines had the cheapest fare on 6 of 30 SEA routes. It is the 13th longest of the 30 routes we track from SEA.
Of 15 departure airports with a fare to Honolulu, Seattle (SEA) ranked 11th at $743. Lowest: $295 from San Francisco (SFO); highest: $1046 from Wellington (WLG); 3 nonstop. Cheapest-fare airlines (routes): Alaska Airlines (9), American Airlines (2), Frontier (1), Qantas (1), Southwest (1) and United Airlines (1).
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/Los_Angeles, Pacific/Honolulu; flight time is our estimate.