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

Return flights

19 Aug - 28 Sep	Turkish Airlines
11 Aug - 20 Aug	Alaska Airlines
11 Aug - 25 Aug	Alaska Airlines
27 Aug - 24 Sep	Alaska Airlines
19 Aug - 26 Aug	Alaska Airlines
22 Aug - 12 Sep	Alaska Airlines
10 Aug - 27 Aug	Hawaiian Airlines
07 Aug - 15 Aug	Alaska Airlines
28 Aug - 04 Sep	Cathay Pacific
27 Aug - 14 Sep	Alaska Airlines
13 Aug - 27 Aug	Hawaiian Airlines
13 Aug - 02 Sep	Hawaiian Airlines
05 Aug - 23 Aug	Cathay Pacific
23 Aug - 28 Sep	Air Canada
21 Aug - 04 Sep	Air Canada
06 Aug - 11 Aug	Alaska Airlines
22 Aug - 10 Sep	Air Canada
23 Aug - 04 Sep	Air Canada
06 Aug - 14 Aug	Alaska Airlines
18 Aug - 23 Aug	Hawaiian Airlines

Also check the deals for one-way flights from Washington 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 Washington to Tokyo in August from $1072

Return flights