AirHint found the following cheapest return flights from Boston (BOS) to Tokyo (NRT) in August 2025 (see full year).

Return flights

24 Aug - 09 Sep	Air Canada
27 Aug - 05 Sep	Air Canada
25 Aug - 16 Sep	Air Canada
17 Aug - 05 Sep	Air Canada
28 Aug - 05 Sep	Air Canada
29 Aug - 30 Sep	Air Canada
29 Aug - 12 Sep	Air Canada
28 Aug - 12 Sep	Air Canada
23 Aug - 16 Sep	Air Canada
28 Aug - 04 Sep	Air Canada
06 Aug - 13 Aug	Air Canada
05 Aug - 12 Aug	Air Canada
10 Aug - 19 Aug	Air Canada
11 Aug - 14 Aug	Air Canada
11 Aug - 18 Aug	Air Canada
12 Aug - 19 Aug	Air Canada
08 Aug - 15 Aug	Air Canada
10 Aug - 17 Aug	Air Canada
09 Aug - 16 Aug	Air Canada
07 Aug - 12 Aug	Air Canada

Also check the deals for one-way flights from Boston 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 Boston to Tokyo in August from 619€

Return flights