AirHint found the following cheapest return flights from Washington (IAD) to Tokyo (NRT) in December 2026 (see full year).

Return flights

01 Dec - 15 Dec	Air Canada
02 Dec - 16 Dec	Air Canada
01 Dec - 11 Dec	Air Canada
28 Dec - 12 Jan	Air Canada
04 Dec - 13 Dec	Air Canada
16 Dec - 23 Dec	Air Canada
25 Dec - 31 Dec	Air Canada
19 Dec - 26 Dec	Korean Air
19 Dec - 27 Dec	Korean Air
20 Dec - 31 Dec	SWISS
19 Dec - 31 Dec	Korean Air
20 Dec - 03 Jan	Air Canada
19 Dec - 02 Jan	Korean Air

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 781€

Return flights