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

Return flights

08 Dec - 15 Dec	Air Canada
08 Dec - 16 Dec	Air Canada
04 Dec - 16 Dec	Air Canada
08 Dec - 14 Dec	Air Canada
07 Dec - 15 Dec	Air Canada
06 Dec - 16 Dec	Air Canada
05 Dec - 17 Dec	Frontier Airlines
10 Dec - 22 Dec	Air Canada
09 Dec - 15 Dec	Hawaiian Airlines
13 Dec - 20 Dec	Alaska Airlines
08 Dec - 14 Jan	Korean Air
29 Dec - 06 Jan	Hawaiian Airlines
30 Dec - 04 Jan	Frontier Airlines
07 Dec - 02 Jan	Frontier Airlines
16 Dec - 01 Jan	Hawaiian Airlines
16 Dec - 04 Jan	Hawaiian Airlines
15 Dec - 07 Jan	United
16 Dec - 02 Jan	Hawaiian Airlines
26 Dec - 03 Jan	Alaska Airlines
22 Dec - 03 Jan	Frontier Airlines

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

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 December from 566€

Return flights