Cheapest one-way flights from Seattle to Seoul in April from 443€

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 April 2025 (see full year).

One-Way flights

08 Apr Spirit Airlines
26 Apr Singapore Airlines
18 Apr Air Canada
16 Apr Air Canada
17 Apr Air Canada
06 Apr Air Canada
07 Apr Air Canada
24 Apr Air Canada
23 Apr Air Canada
18 Apr Asiana Airlines direct

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

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