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

Return flights

10 Dec - 17 Dec	Air Canada
09 Dec - 23 Dec	Air Canada
09 Dec - 16 Dec	Air Canada
08 Dec - 19 Dec	Air Canada
07 Dec - 14 Dec	Air Canada
08 Dec - 15 Dec	Air Canada
10 Dec - 18 Dec	Air Canada
07 Dec - 20 Dec	Air Canada
30 Dec - 13 Jan	Air Canada
13 Dec - 23 Dec	Air Canada
23 Dec - 20 Jan	Air Canada
15 Dec - 25 Dec	Air Canada
22 Dec - 21 Jan	Air Canada
25 Dec - 11 Jan	Etihad Airways
30 Dec - 08 Jan	Etihad Airways
25 Dec - 07 Jan	Etihad Airways
30 Dec - 06 Jan	Etihad Airways
28 Dec - 17 Jan	Air Canada
26 Dec - 05 Jan	Etihad Airways
31 Dec - 07 Jan	Air Canada

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

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 December from $775

Return flights