₩651,900 Cheap Flights from Seattle (SEA) to Seoul (SEL)

View ₩651,900 flight on Sun, Apr 5, 2026Opens in a new window

Popular airlines from Seattle to Seoul

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Cheap Flights from Seattle to Seoul (SEA-SEL)

Prices were available within the past 7 days and start at ₩651,900 for one-way flights and ₩1,122,700 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hainan Airlines
Thu, Mar 26 - Wed, Apr 29
SEA
Seattle
ICN
Seoul
₩1,122,700 Roundtrip, found 5 days ago
₩1,122,700
Roundtrip
found 5 days ago
Select Hainan Airlines flight, departing Thu, Mar 26 from Seattle to Seoul, returning Wed, Apr 29, priced at ₩1,122,700 found 5 days ago
Air Canada
Mon, Feb 9 - Mon, Feb 16
SEA
Seattle
ICN
Seoul
₩1,196,600 Roundtrip, found 7 hours ago
₩1,196,600
Roundtrip
found 7 hours ago
Select Air Canada flight, departing Mon, Feb 9 from Seattle to Seoul, returning Mon, Feb 16, priced at ₩1,196,600 found 7 hours ago
Delta
Fri, Sep 4 - Mon, Sep 7
SEA
Seattle
ICN
Seoul
₩1,276,000 Roundtrip, found 1 hour ago
₩1,276,000
Roundtrip
found 1 hour ago
Select Delta flight, departing Fri, Sep 4 from Seattle to Seoul, returning Mon, Sep 7, priced at ₩1,276,000 found 1 hour ago
Korean Air
Tue, Mar 24 - Tue, Apr 28
SEA
Seattle
ICN
Seoul
₩1,278,600 Roundtrip, found 6 hours ago
₩1,278,600
Roundtrip
found 6 hours ago
Select Korean Air flight, departing Tue, Mar 24 from Seattle to Seoul, returning Tue, Apr 28, priced at ₩1,278,600 found 6 hours ago
Alaska Airlines
Fri, Jan 9 - Fri, Feb 6
SEA
Seattle
ICN
Seoul
₩1,281,200 Roundtrip, found 4 days ago
₩1,281,200
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Fri, Jan 9 from Seattle to Seoul, returning Fri, Feb 6, priced at ₩1,281,200 found 4 days ago
United
Mon, Mar 23 - Mon, Mar 30
SEA
Seattle
ICN
Seoul
₩1,286,900 Roundtrip, found 3 days ago
₩1,286,900
Roundtrip
found 3 days ago
Select United flight, departing Mon, Mar 23 from Seattle to Seoul, returning Mon, Mar 30, priced at ₩1,286,900 found 3 days ago
American Airlines
Sat, Feb 21 - Sat, Feb 28
SEA
Seattle
ICN
Seoul
₩1,304,300 Roundtrip, found 6 hours ago
₩1,304,300
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Sat, Feb 21 from Seattle to Seoul, returning Sat, Feb 28, priced at ₩1,304,300 found 6 hours ago
EVA Airways
Tue, Mar 24 - Tue, Apr 28
SEA
Seattle
ICN
Seoul
₩1,319,100 Roundtrip, found 6 hours ago
₩1,319,100
Roundtrip
found 6 hours ago
Select EVA Airways flight, departing Tue, Mar 24 from Seattle to Seoul, returning Tue, Apr 28, priced at ₩1,319,100 found 6 hours ago
China Airlines
Tue, Aug 11 - Mon, Aug 31
SEA
Seattle
ICN
Seoul
₩1,394,600 Roundtrip, found 1 day ago
₩1,394,600
Roundtrip
found 1 day ago
Select China Airlines flight, departing Tue, Aug 11 from Seattle to Seoul, returning Mon, Aug 31, priced at ₩1,394,600 found 1 day ago
Cathay Pacific
Tue, Apr 7 - Mon, Apr 13
SEA
Seattle
ICN
Seoul
₩1,405,600 Roundtrip, found 7 hours ago
₩1,405,600
Roundtrip
found 7 hours ago
Select Cathay Pacific flight, departing Tue, Apr 7 from Seattle to Seoul, returning Mon, Apr 13, priced at ₩1,405,600 found 7 hours ago

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

November is typically the cheapest month to fly

From ₩1,030,690 - ₩1,299,938 per traveler.

Alternative airports near Seoul

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

Select flight to Incheon Intl. ICN. Cheapest option available. Average driving time to city center is 47 minutes. Flights from ₩1,199,200
ICN
Incheon Intl.
Cheapest
Average driving time to city center47 min
Flights from ₩1,199,200

Frequently asked questions

How much is a flight from Sea-Tac Airport to Seoul (SEL-All Airports)?
Round-trip flights from Seattle - Tacoma Intl. Airport (SEA) to Seoul (SEL-All Airports) start from ₩1,122,700. This is based on fares listed within the last 7 days on Expedia for flights departing within the next year — book ASAP to avoid missing out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Seattle - Tacoma Intl. Airport (SEA) to Seoul (SEL-All Airports)?
Each air carrier has its own set of terms and conditions. If you do decide to cancel, follow the easy instructions on our Customer Service Portal.
How do I find cheap flights from SEA to Seoul (SEL-All Airports) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Sea-Tac Airport to Seoul (SEL-All Airports) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from SEA to Seoul (SEL-All Airports)?
With around 8,400 kilometers separating SeaTac and South Korea, your flight will be a long one. Pack wisely to make your journey more comfortable. Simple things like warm clothing and a quality neck pillow should be in your hand luggage.
Which airlines fly direct from Sea-Tac Airport to Seoul (SEL-All Airports)?
A leading airline that services the route from Seattle - Tacoma Intl. Airport (SEA) to Seoul (SEL-All Airports) is Delta Air Lines (DL). It offers 39 flights a month. Korean Air (KE) is another option. It operates 21 flights per month. Between these two airlines, you'll be able to find a good deal from SeaTac to South Korea.
Are Sea-Tac Airport to Seoul (SEL-All Airports) flight tickets cheaper when they're purchased at the last minute?
Flight prices change all the time, so not always. While last-minute flight deals between SEA and Seoul (SEL-All Airports) are of course possible, it also makes sense to keep a close eye on prices well before you fly. In fact, some air carriers publish their prices up to a year ahead of the departure date. Expedia is continuously updating the best airfare bargains around, so keep checking back and be ready to lock in your seat when the price is low.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Incheon Intl.
Roundtrip price
₩1,122,700
Distance
8326 km

Book with confidence

Seattle to Incheon Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from Seattle to Incheon will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring Incheon.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with SEA to SEL flights that won’t make your bank account wince. Ready to temporarily leave behind Seattle for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to SEL with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

Seattle to Incheon Flights
*Available to Expedia members.