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

Return flights

09 Oct - 20 Oct	Asiana Airlines
28 Oct - 06 Nov	Air Canada
21 Oct - 28 Oct	Korean Air
28 Oct - 06 Nov	Japan Airlines	direct
13 Oct - 27 Oct	Asiana Airlines
31 Oct - 09 Nov	Air Canada
08 Oct - 29 Oct	United
14 Oct - 24 Oct	Air Canada
01 Oct - 14 Oct	Korean Air
06 Oct - 13 Oct	Korean Air
01 Oct - 12 Oct	Korean Air
14 Oct - 24 Oct	Japan Airlines	direct
02 Oct - 16 Oct	United
22 Oct - 09 Nov	Korean Air
31 Oct - 09 Nov	Japan Airlines	direct
12 Oct - 10 Nov	United
24 Oct - 30 Nov	Alaska Airlines
24 Oct - 29 Nov	Hawaiian Airlines
07 Oct - 04 Nov	Austrian Airlines

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 609€

Return flights