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

Return flights

25 Aug - 29 Sep	Air Canada
30 Aug - 13 Sep	Air Canada
18 Aug - 03 Sep	Spirit Airlines
12 Aug - 26 Aug	Spirit Airlines
05 Aug - 05 Sep	Spirit Airlines
23 Aug - 06 Sep	WestJet
22 Aug - 06 Sep	Spirit Airlines
18 Aug - 27 Aug	Air Canada
27 Aug - 03 Sep	Air Canada
21 Aug - 02 Sep	jetBlue
05 Aug - 27 Aug	Spirit Airlines
20 Aug - 27 Aug	Air Canada
31 Aug - 08 Sep	jetBlue
24 Aug - 31 Aug	Air Canada
24 Aug - 30 Aug	Air Canada
20 Aug - 31 Aug	Air Canada
05 Aug - 24 Aug	Air Canada
19 Aug - 26 Aug	Air Canada
17 Aug - 24 Aug	Air Canada
25 Aug - 29 Sep	American Airlines	direct

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.

Book a cheap hotel in Tokyo

Cheap car rent in Tokyo

Cheapest return flights from Boston to Tokyo in August from $783

Return flights