AirHint found the following cheapest return flights from Portland (PDX) to Tokyo (NRT) in August 2025 (see full year).

Return flights

10 Aug - 26 Aug	Hawaiian Airlines
20 Aug - 03 Sep	ANA
12 Aug - 26 Aug	Alaska Airlines
30 Aug - 11 Sep	Alaska Airlines
05 Aug - 12 Aug	Korean Air
30 Aug - 09 Sep	Air Canada
30 Aug - 08 Sep	Air Canada
28 Aug - 04 Sep	ANA
30 Aug - 07 Sep	Hawaiian Airlines
23 Aug - 30 Aug	ANA
22 Aug - 01 Sep	ANA
06 Aug - 14 Aug	Japan Airlines
28 Aug - 01 Sep	ANA
05 Aug - 08 Aug	Hawaiian Airlines
01 Aug - 11 Aug	ANA
02 Aug - 11 Aug	Asiana Airlines

Also check the deals for one-way flights from Portland to Tokyo in August.

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 Portland to Tokyo in August from $686

Return flights