AirHint found the following cheapest return flights from Seattle (SEA) to Tokyo (HND) in January 2026 (see full year).

Return flights

30 Jan - 06 Feb	Asiana Airlines
16 Jan - 19 Jan	Asiana Airlines
31 Jan - 08 Feb	Asiana Airlines
26 Jan - 16 Feb	Asiana Airlines
07 Jan - 21 Jan	United	direct
14 Jan - 21 Jan	United	direct
27 Jan - 17 Feb	United	direct
07 Jan - 15 Jan	United	direct
30 Jan - 06 Feb	Delta	direct
31 Jan - 08 Feb	Delta	direct
16 Jan - 19 Jan	United	direct
11 Jan - 17 Jan	United	direct
03 Jan - 10 Jan	United	direct

Also check the deals for one-way flights from Seattle to Tokyo in January.

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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Cheapest return flights from Seattle to Tokyo in January from 532€

Return flights