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

Return flights

20 Jul - 28 Jul	United
27 Jul - 30 Jul	United
26 Jul - 03 Aug	United
01 Jul - 22 Jul	United
25 Jul - 31 Jul	United
01 Jul - 31 Jul	United
01 Jul - 20 Aug	Asiana Airlines
24 Jul - 31 Jul	United
24 Jul - 01 Aug	United
01 Jul - 18 Jul	United
25 Jul - 01 Aug	United
14 Jul - 22 Jul	United
13 Jul - 24 Jul	United
10 Jul - 17 Jul	Air Canada
31 Jul - 08 Aug	Singapore Airlines
01 Jul - 20 Aug	Korean Air	direct
30 Jul - 06 Aug	Air Canada
24 Jul - 01 Aug	Asiana Airlines	direct
31 Jul - 08 Aug	Asiana Airlines	direct
25 Jul - 01 Aug	Korean Air	direct

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

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 July from $729

Return flights