Cheapest one-way flights from Seattle to Tokyo in December from $433

AirHint found the following cheapest one-way flights from Seattle (SEA) to Tokyo (HND) in December 2025 (see full year).

One-Way flights

31 Dec Asiana Airlines
07 Dec Asiana Airlines
07 Dec ANA direct
31 Dec United direct
02 Dec Japan Airlines
03 Dec Japan Airlines
09 Dec Air Canada
01 Dec Japan Airlines
09 Dec Delta direct
13 Dec Asiana Airlines

Also check the deals for return flights from Seattle to Tokyo in December.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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