AirHint found the following cheapest return flights from Seoul (ICN) to Seattle (SEA) in June 2026 (see full year).

Return flights

02 Jun - 09 Jun	Air Canada
03 Jun - 15 Jun	Air Canada
06 Jun - 13 Jun	Air Canada
10 Jun - 13 Jun	EVA Air
17 Jun - 30 Jun	Air Canada
26 Jun - 03 Jul	Air Canada
24 Jun - 01 Jul	Air Canada
27 Jun - 04 Jul	Air Canada
30 Jun - 20 Jul	United
27 Jun - 05 Jul	Air Canada
11 Jun - 18 Jun	WestJet
03 Jun - 15 Jun	Korean Air	direct
02 Jun - 09 Jun	Korean Air	direct
17 Jun - 24 Jun	Air Canada
24 Jun - 27 Jun	Air Canada
22 Jun - 01 Jul	Air Canada
25 Jun - 13 Jul	United
25 Jun - 13 Jul	Korean Air	direct
30 Jun - 20 Jul	Korean Air	direct
24 Jun - 01 Jul	Delta	direct

Also check the deals for one-way flights from Seoul to Seattle in June.

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 Seoul to Seattle in June from $680

Return flights