AirHint found the following cheapest return flights from Portland (PDX) to Tokyo (NRT) in March 2026 (see full year).

Return flights

01 Mar - 08 Mar	Air Canada
01 Mar - 18 Mar	Air Canada
10 Mar - 17 Mar	Korean Air
15 Mar - 23 Mar	Korean Air
19 Mar - 02 Apr	Korean Air
21 Mar - 02 Apr	Korean Air
25 Mar - 02 Apr	Air Canada
22 Mar - 06 Apr	Korean Air
04 Mar - 14 Mar	Air Canada
07 Mar - 17 Mar	Air Canada
20 Mar - 27 Mar	Korean Air
17 Mar - 29 Mar	Korean Air
25 Mar - 05 Apr	Korean Air
22 Mar - 04 Apr	Air Canada
31 Mar - 15 Apr	Alaska Airlines
24 Mar - 28 Mar	Hawaiian Airlines
18 Mar - 29 Mar	Air Canada

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

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 March from $693

Return flights