AirHint found the following cheapest return flights from Boston (BOS) to Tokyo (NRT) in May 2026 (see full year).

Return flights

12 May - 22 May	Air Canada
13 May - 21 May	Air Canada
01 May - 15 May	Air Canada
01 May - 13 May	Air Canada
01 May - 08 May	Air Canada
07 May - 18 Jun	Air Canada
10 May - 17 May	Air Canada
18 May - 25 May	Air Canada
15 May - 05 Jun	Air Canada
01 May - 13 May	Japan Airlines	direct
13 May - 21 May	Japan Airlines	direct
10 May - 17 May	Japan Airlines	direct
28 May - 11 Jun	Emirates

Also check the deals for one-way flights from Boston to Tokyo in May.

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 May from 611€

Return flights