AirHint found the following cheapest return flights from Seattle (SEA) to Tokyo (HND) in March 2026 (see full year).

Return flights

07 Mar - 21 Mar	Korean Air
04 Mar - 12 Mar	Korean Air
02 Mar - 11 Mar	Korean Air
10 Mar - 17 Mar	Korean Air
01 Mar - 24 Mar	Philippine Airlines
11 Mar - 26 Mar	Korean Air
01 Mar - 07 Mar	Korean Air
01 Mar - 17 Mar	Korean Air
16 Mar - 26 Mar	Korean Air
22 Mar - 02 Apr	Korean Air
24 Mar - 04 Apr	Korean Air
24 Mar - 09 Apr	Korean Air
16 Mar - 02 Apr	Korean Air
23 Mar - 03 Apr	Korean Air
22 Mar - 03 Apr	Korean Air
15 Mar - 22 Mar	Korean Air
22 Mar - 04 Apr	Korean Air
31 Mar - 23 Apr	Asiana Airlines
31 Mar - 13 Apr	Asiana Airlines
22 Mar - 19 Apr	Korean Air

Also check the deals for one-way flights from Seattle 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 Seattle to Tokyo in March from $615

Return flights