Seattle (SEA) to New York (NYC): 2,415 miles (3,887 km) great-circle, about 5h 20m nonstop by our estimate. Cheapest fare observed: $300 round-trip on Alaska Airlines, nonstop, departing May 6, 2026.
$300 round-trip, Alaska Airlines AS298, departing 2026-05-06 at 06:03, returning 2026-05-10. The recorded itinerary left on a Wednesday, returning on a Sunday 4 nights later; the fare was observed 11 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $300, it ranked 12th of the 30 round-trip fares we recorded from SEA (median $591). That is 12.4 cents per great-circle mile (round-trip price over one-way distance), below the SEA median of 19.2 cents across 30 round-trip routes.
Routes from SEA of similar length: Boston (2,489 mi) at $289 and Washington (2,300 mi) at $234.
Alaska Airlines had the cheapest fare on 6 of 30 SEA routes. It is the 16th longest of the 30 routes we track from SEA.
Of 50 departure airports with a fare to New York, Seattle (SEA) ranked 21st at $300. Lowest: $95 from Miami (MIA); highest: $1609 from Auckland (AKL); 18 nonstop. Cheapest-fare airlines (routes): Spirit (8), Frontier (7), Alaska Airlines (3), JetBlue (3), Southwest (3) and Air Canada (2), plus 20 more.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/Los_Angeles, America/New_York; flight time is our estimate.