Cheapest one-way flights from Seattle to Seoul in October from $537

Best time to book flights for Seattle (SEA) to Seoul (ICN) flights at AirHint

AirHint found the following cheapest one-way flights from Seattle (SEA) to Seoul (ICN) in October 2025 (see full year).

One-Way flights

27 Oct Air Canada
12 Oct Air Canada
02 Oct Air Canada
02 Oct Asiana Airlines direct
27 Oct Asiana Airlines direct
13 Oct Korean Air direct
11 Oct Singapore Airlines
09 Oct EVA Air
09 Oct Korean Air direct
12 Oct Delta direct

Also check the deals for return flights from Seattle to Seoul in October.

Skyscanner

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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul