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

Return flights

17 Aug - 24 Sep	Frontier Airlines
18 Aug - 27 Aug	Frontier Airlines
22 Aug - 02 Sep	Frontier Airlines
21 Aug - 24 Aug	Frontier Airlines
18 Aug - 28 Aug	Frontier Airlines
17 Aug - 27 Aug	Frontier Airlines
22 Aug - 10 Sep	Frontier Airlines
19 Aug - 26 Aug	Air Canada
31 Aug - 11 Sep	United
22 Aug - 12 Sep	Frontier Airlines
22 Aug - 26 Aug	Frontier Airlines
30 Aug - 13 Sep	Delta
28 Aug - 07 Sep	United
29 Aug - 07 Sep	United
18 Aug - 04 Sep	Cathay Pacific
19 Aug - 04 Sep	Cathay Pacific
17 Aug - 29 Aug	Frontier Airlines
20 Aug - 27 Aug	Air India
16 Aug - 27 Aug	Alaska Airlines
29 Aug - 31 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 920€

Return flights