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

Return flights

03 May - 12 May	Hainan Airlines
03 May - 14 May	Hainan Airlines
25 May - 09 Jun	WestJet
17 May - 28 May	WestJet
01 May - 12 May	WestJet
01 May - 08 May	WestJet
17 May - 06 Jun	WestJet
14 May - 29 May	WestJet
06 May - 12 May	Air Canada
14 May - 27 May	WestJet
06 May - 14 May	Air Canada
22 May - 29 May	Porter Airlines (Canada) Ltd
22 May - 01 Jun	WestJet
10 May - 12 Jun	Air Canada
20 May - 03 Jun	Air Canada
25 May - 06 Jun	WestJet
26 May - 02 Jun	Air Canada
29 May - 07 Jun	WestJet
18 May - 01 Jun	Air Canada
14 May - 14 Jun	Air Canada

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 $851

Return flights