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

Return flights

12 Aug - 05 Sep	Korean Air
24 Aug - 31 Aug	Philippine Airlines
27 Aug - 04 Sep	Korean Air
12 Aug - 05 Sep	ANA	direct
20 Aug - 30 Sep	ANA	direct
22 Aug - 31 Aug	Philippine Airlines
27 Aug - 04 Sep	ANA	direct
26 Aug - 09 Sep	Delta	direct
23 Aug - 25 Sep	ANA	direct
08 Aug - 31 Aug	Asiana Airlines
22 Aug - 29 Sep	Asiana Airlines
28 Aug - 01 Sep	Asiana Airlines
22 Aug - 01 Sep	Asiana Airlines
04 Aug - 22 Aug	ANA
05 Aug - 15 Aug	ANA
05 Aug - 15 Aug	ANA	direct
24 Aug - 31 Aug	ANA	direct
11 Aug - 23 Aug	ANA	direct
07 Aug - 14 Aug	ANA	direct
08 Aug - 31 Aug	ANA	direct

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

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 August from $740

Return flights