$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 1 day ago
$850
Roundtrip
found 1 day ago
Select United flight, departing Thu, Jan 22 from Seattle to Seoul, returning Sun, Feb 1, priced at $850 found 1 day ago
United
Thu, Jan 22 - Sun, Feb 1
SEA
Seattle
ICN
Seoul
$862 Roundtrip, found 1 day ago
$862
Roundtrip
found 1 day ago
Select United flight, departing Thu, Jan 22 from Seattle to Seoul, returning Sun, Feb 1, priced at $862 found 1 day ago
United
Thu, Jan 22 - Sun, Feb 1
SEA
Seattle
ICN
Seoul
$900 Roundtrip, found 1 day ago
$900
Roundtrip
found 1 day ago
Select United flight, departing Thu, Jan 22 from Seattle to Seoul, returning Sun, Feb 1, priced at $900 found 1 day 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 $1,311
GMP
Gimpo Intl.
Closest
Average driving time to city center20 min
Flights from $1,311

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Incheon Intl.
Airlines serving
Air Canada, Alaska Airlines, Asiana Airlines, Cathay Pacific, Delta, Hawaiian Airlines, Korean Air, Philippine Airlines, United
Popular airline
Delta
Distance
8326 km
Average flight time
29 hours 1 min

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