AirHint found the following cheapest return flights from Washington (DCA) to Tokyo (NRT) in September 2025 (see full year).

Return flights

03 Sep - 16 Sep	Frontier Airlines
09 Sep - 25 Sep	Frontier Airlines
07 Sep - 11 Sep	Frontier Airlines
03 Sep - 10 Sep	Frontier Airlines
16 Sep - 23 Sep	Frontier Airlines
16 Sep - 15 Oct	Frontier Airlines
23 Sep - 01 Oct	Frontier Airlines
20 Sep - 26 Sep	Air Canada
07 Sep - 23 Sep	Frontier Airlines
24 Sep - 03 Oct	Air Canada
14 Sep - 30 Sep	Air Canada
17 Sep - 22 Sep	Air Canada
29 Sep - 06 Oct	Air Canada
12 Sep - 17 Sep	Air Canada
22 Sep - 03 Oct	Frontier Airlines
20 Sep - 06 Oct	Frontier Airlines
27 Sep - 14 Oct	Hawaiian Airlines
19 Sep - 05 Oct	Emirates
26 Sep - 04 Oct	Emirates

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 684€

Return flights