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

Return flights

23 Mar - 31 Mar	Korean Air
18 Mar - 30 Mar	Korean Air
01 Mar - 08 Mar	Korean Air
19 Mar - 30 Mar	Korean Air
19 Mar - 02 Apr	Korean Air
26 Mar - 12 Apr	Korean Air
18 Mar - 02 Apr	Korean Air
23 Mar - 13 Apr	Korean Air
18 Mar - 01 Apr	Korean Air
26 Mar - 05 Apr	Korean Air
26 Mar - 06 Apr	Korean Air
07 Mar - 21 Mar	Alaska Airlines
19 Mar - 04 Apr	Korean Air
27 Mar - 05 Apr	Korean Air
21 Mar - 30 Mar	Korean Air
20 Mar - 28 Mar	Korean Air
22 Mar - 30 Mar	Korean Air
20 Mar - 10 Apr	Korean Air

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 $649

Return flights