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

Return flights

27 Oct - 07 Nov	Air Canada
28 Oct - 07 Nov	Air Canada
29 Oct - 07 Nov	Air Canada
30 Oct - 07 Nov	Air Canada
13 Oct - 21 Oct	Korean Air
30 Oct - 09 Nov	Alaska Airlines
05 Oct - 22 Oct	Korean Air
13 Oct - 22 Oct	Korean Air
31 Oct - 05 Nov	Air Canada
14 Oct - 03 Nov	Air Canada
18 Oct - 23 Oct	United
11 Oct - 18 Oct	Alaska Airlines
06 Oct - 22 Oct	United
01 Oct - 08 Oct	Alaska Airlines
01 Oct - 15 Oct	Hawaiian Airlines

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

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.

Book a cheap hotel in Tokyo

Cheap car rent in Tokyo

Cheapest return flights from Portland to Tokyo in October from $662

Return flights