AirHint found the following cheapest return flights from Washington (IAD) to Tokyo (HND) in December 2025 (see full year).

Return flights

01 Dec - 11 Dec	Air Canada
03 Dec - 16 Dec	Air Canada
08 Dec - 16 Dec	Air Canada
06 Dec - 18 Dec	Delta
08 Dec - 15 Dec	Air Canada
29 Dec - 13 Jan	Delta
04 Dec - 14 Dec	Air Canada
05 Dec - 19 Jan	Air Canada
29 Dec - 12 Jan	United
03 Dec - 16 Dec	ANA	direct
01 Dec - 11 Dec	ANA	direct
30 Dec - 12 Jan	Delta
10 Dec - 24 Dec	United
29 Dec - 13 Jan	ANA	direct
13 Dec - 24 Dec	Delta
29 Dec - 12 Jan	ANA	direct
30 Dec - 12 Jan	ANA	direct
24 Dec - 07 Jan	Delta
29 Dec - 07 Jan	Delta
16 Dec - 07 Jan	United

Also check the deals for one-way flights from Washington 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 Washington to Tokyo in December from 937€

Return flights