Cheapest one-way flights from Seattle to Tokyo in December from $346

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

One-Way flights

29 Dec Delta direct
31 Dec United direct
26 Dec ANA direct
27 Dec ANA direct
25 Dec Alaska Airlines
24 Dec Alaska Airlines
25 Dec Delta direct
17 Dec Hawaiian Airlines
23 Dec Frontier Airlines
18 Dec Hawaiian Airlines

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

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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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