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

Return flights

23 Sep - 07 Oct	United	direct
08 Sep - 22 Sep	United	direct
19 Sep - 02 Oct	United
08 Sep - 15 Sep	Air Canada
04 Sep - 15 Sep	Air Canada
02 Sep - 20 Sep	United	direct
04 Sep - 15 Sep	United	direct
02 Sep - 12 Sep	United	direct
18 Sep - 02 Oct	United	direct
19 Sep - 02 Oct	ANA	direct
04 Sep - 13 Sep	Air Canada
06 Sep - 13 Sep	Air Canada
20 Sep - 27 Sep	Air Canada
13 Sep - 20 Sep	Air Canada

Also check the deals for one-way flights from Washington to Tokyo in September.

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 September from 846€

Return flights