Cheapest one-way flights from Seattle to Tokyo in December from $317

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

One-Way flights

07 Dec Asiana Airlines
02 Dec Asiana Airlines
05 Dec Asiana Airlines
28 Dec Korean Air
29 Dec Korean Air
07 Dec Delta direct
02 Dec Delta direct
31 Dec Delta direct
10 Dec Asiana Airlines
05 Dec Delta direct

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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