$617 Cheap Flights from Seattle to Seoul

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Find The Best Dates To Fly from Seattle - Tacoma Intl. to Incheon Intl.

Amazing SEA to ICN Flight Deals

The cheapest flights to Incheon Intl. found within the past 7 days were $1,016 round trip and $617 one way. Prices and availability subject to change. Additional terms may apply.

Flight Schedule for SEA to ICN

CarrierFlightDepart SEAArrive ICNSun
DL19711:35 am04:05 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
KE4201:00 pm04:40 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
OZ27102:20 pm05:45 pmCheck FareCheck Fare
Check Fare
Check Fare
0 Stops

Frequently asked questions

Can I catch a flight from SEA to Incheon Intl. Airport (ICN) right now?
For info on any current Incheon Intl. Airport (ICN) quarantine requirements and travel advice, go to our Covid-19 Travel Advisor. Look before you arrange your flight, so you don’t get caught out en route.
Are there direct flights from SEA to Incheon Airport?
Your next grand adventure is on the opposite side of a single flight. You can fly direct from Seattle - Tacoma Intl. Airport (SEA) to Incheon Intl. Airport (ICN) with multiple airlines, including Korean Air and Delta.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Incheon Intl. Airport (ICN), please visit our Customer Service Portal.
How long is the flight from SEA to Seoul--Incheon Intl. Airport?
It’s a good idea to get out of your seat and walk around during your flight from SEA to ICN. You’ll be in the air for 17 hours and 27 minutes, so exercising your body will help keep you more comfortable during this long-haul journey.
What is the flight distance from Sea-Tac Airport to ICN?
With 5,200 mi between Seattle and Incheon, you’ll have oodles of time to kick back and relax. Enjoy the in-flight entertainment, read a magazine or catch up on some shut-eye.
What airlines fly from Sea-Tac Airport to Incheon Airport?
There are a number of airlines that fly direct from Seattle - Tacoma Intl. Airport (SEA) to Incheon Intl. Airport (ICN). Korean Air (KE) is one of the most popular, operating at least 30 flights each month. An alternative is Delta (DL), which offers 21 flights every month. The more airlines you consider, the more likely you are to score a terrific deal.
What airlines have practices regarding COVID-19 in place and use social distancing?
From the moment you enter the departure terminal to when you leave the arrivals terminal, if you’re flying with Korean Air, Jin Air or Asiana Airlines you can be sure that COVID-19 measures and social distancing rules have been adhered to. Many airlines have introduced capped capacity flights and keeping the middle seat empty.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.


Traveling From
Seattle - Tacoma Intl.
Traveling To
Incheon Intl.
Shortest Flight Time
43 hours 40 mins
Earliest Departure Time
11:35AM KST
Latest Departure Time
1:00PM KST
Lowest Flight Price

Route Info

Flight path for flights from Seattle-Tacoma International Airport to Incheon International Airport

5,232.00 miles

Airlines & Aircraft Used on SEA to ICN Flight Routes

Airline Carrier
Air Canada
Boeing 737-300 pax
Delta Air Lines
Airbus A330 all models
Korean Air
Airbus A321-100/200
Korean Air
Boeing 737-800 pax
Korean Air
Boeing 757 all pax models
Korean Air
Boeing 777-200 pax

Discover our best flights from Seattle SEA to Seoul ICN. 

With 20 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times. 


Find our best return flights from Seattle SEA to Seoul ICN at the right price  

Airfares to Seoul ICN from Seattle SEA currently cost between $1,016 and $1,078. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply. 


Book one-way flights from Seattle SEA to Seoul ICN 

If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from Seattle SEA to Seoul ICN on Travelocity starting at $617. Prices and availability subject to change. Additional terms may apply. 


Get to Seoul ICN from Seattle SEA quicker with direct flights. 

Get to Seoul faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to ICN from SEA to take around 43 hour(s) 40 min(s).  


Find our cheapest airfares for flights from Seattle SEA to Seoul ICN

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to ICN from SEA. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.  


Get our best airfare deals for your flight from Seattle SEA to Seoul ICN today 

If you’re flexible about when you travel, September is usually the cheapest month to fly from Seattle SEA to Seoul ICN. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first. 


Book flexible airline tickets for flights to Seoul ICN from Seattle SEA 

Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to ICN from SEA have this option.  


Travel with confidence when you book flights to Seoul ICN from Seattle SEA with Travelocity 

We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving. 

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.