Cheapest one-way flights from Seattle to Tokyo in December from $354

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

One-Way flights

01 Dec Asiana Airlines
28 Dec Air Canada
07 Dec Asiana Airlines
07 Dec Alaska Airlines direct
01 Dec Alaska Airlines direct
28 Dec Japan Airlines direct
29 Dec Japan Airlines direct
03 Dec Japan Airlines
08 Dec Japan Airlines
12 Dec Air Canada

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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