$448 Cheap United flights Seattle (SEA) to Seoul (ICN)

View $448 flight on Thu, Jan 22, 2026Opens in a new window

$448 Cheap United flights Seattle (SEA) to Seoul (ICN)

Prices were available within the past 7 days and start at $448 for one-way flights and $850 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Jan 22 - Sun, Feb 1
SEA
Seattle
ICN
Seoul
$850 Roundtrip, found 3 days ago
$850
Roundtrip
found 3 days ago
Select United flight, departing Thu, Jan 22 from Seattle to Seoul, returning Sun, Feb 1, priced at $850 found 3 days ago
United
Thu, Jan 22 - Sun, Feb 1
SEA
Seattle
ICN
Seoul
$862 Roundtrip, found 3 days ago
$862
Roundtrip
found 3 days ago
Select United flight, departing Thu, Jan 22 from Seattle to Seoul, returning Sun, Feb 1, priced at $862 found 3 days ago
United
Thu, Jan 22 - Sun, Feb 1
SEA
Seattle
ICN
Seoul
$900 Roundtrip, found 3 days ago
$900
Roundtrip
found 3 days ago
Select United flight, departing Thu, Jan 22 from Seattle to Seoul, returning Sun, Feb 1, priced at $900 found 3 days ago

Find the cheapest month to fly from Seattle (SEA) to Seoul (ICN)

November is typically the cheapest month to fly

From $700 - $843 per traveler.

Alternative airports near Seoul

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Gimpo Intl. GMP. Closest option available. Average driving time to city center is 20 minutes. Flights from $962
GMP
Gimpo Intl.
Closest
Average driving time to city center20 min
Flights from $962
Flights from Seattle (SEA) to Seoul (ICN)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Incheon Intl.
Distance
8326 km
Average flight time
29 hours 1 min