AirHint found the following cheapest return flights from Seattle (SEA) to Tokyo (HND) in October 2025 (see full year).

Return flights

21 Oct - 28 Oct	Asiana Airlines
21 Oct - 28 Oct	United	direct
28 Oct - 06 Nov	United	direct
08 Oct - 29 Oct	United
15 Oct - 19 Nov	United
07 Oct - 04 Nov	United
07 Oct - 21 Oct	United
13 Oct - 27 Oct	Asiana Airlines
13 Oct - 27 Oct	United	direct
14 Oct - 04 Nov	Delta	direct
22 Oct - 09 Nov	United	direct
06 Oct - 27 Oct	Delta	direct
06 Oct - 26 Oct	Delta	direct
15 Oct - 21 Oct	United
02 Oct - 16 Oct	United
19 Oct - 01 Nov	United
12 Oct - 10 Nov	Delta	direct
07 Oct - 04 Nov	Delta	direct
24 Oct - 29 Nov	United
24 Oct - 29 Nov	Delta	direct

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

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 October from 619€

Return flights