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

Return flights

26 Sep - 29 Sep	Air Canada
25 Sep - 08 Oct	Air Canada
07 Sep - 22 Sep	Air Canada
23 Sep - 08 Oct	Air Canada
23 Sep - 07 Oct	Air Canada
18 Sep - 27 Sep	Air Canada
11 Sep - 20 Sep	Spirit Airlines
01 Sep - 02 Oct	Frontier Airlines
08 Sep - 15 Sep	Air Canada
01 Sep - 03 Oct	Frontier Airlines

Also check the deals for one-way flights from Philadelphia 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 Philadelphia to Tokyo in September from 709€

Return flights