$393 Cheap Flights from Seoul (ICN) to Seattle (SEA)

View $393 flight on Thu, Dec 4, 2025Opens in a new window

Popular airlines from Incheon Intl. Airport (ICN) to Seattle-Tacoma International Airport (SEA)

Cheap Flights from Seoul to Seattle (ICN-SEA)

Prices were available within the past 7 days and start at $393 for one-way flights and $538 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Nov 24 - Mon, Jan 26
ICN
Seoul
SEA
Seattle
$538 Roundtrip, found 5 hours ago
$538
Roundtrip
found 5 hours ago
Select United flight, departing Mon, Nov 24 from Seoul to Seattle, returning Mon, Jan 26, priced at $538 found 5 hours ago
United
Tue, Dec 16 - Wed, Dec 31
ICN
Seoul
SEA
Seattle
$538 Roundtrip, found 2 days ago
$538
Roundtrip
found 2 days ago
Select United flight, departing Tue, Dec 16 from Seoul to Seattle, returning Wed, Dec 31, priced at $538 found 2 days ago
Air Canada
Wed, Nov 12 - Fri, Nov 14
ICN
Seoul
SEA
Seattle
$539 Roundtrip, found 5 hours ago
$539
Roundtrip
found 5 hours ago
Select Air Canada flight, departing Wed, Nov 12 from Seoul to Seattle, returning Fri, Nov 14, priced at $539 found 5 hours ago
United
Tue, Dec 23 - Tue, Jan 6
ICN
Seoul
SEA
Seattle
$540 Roundtrip, found 2 hours ago
$540
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Dec 23 from Seoul to Seattle, returning Tue, Jan 6, priced at $540 found 2 hours ago
Air Canada
Wed, Nov 5 - Thu, Nov 27
ICN
Seoul
SEA
Seattle
$542 Roundtrip, just found
$542
Roundtrip
just found
Select Air Canada flight, departing Wed, Nov 5 from Seoul to Seattle, returning Thu, Nov 27, priced at $542 just found
Hawaiian Airlines
Sun, Dec 28 - Fri, Feb 6
ICN
Seoul
SEA
Seattle
$556 Roundtrip, found 2 days ago
$556
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Sun, Dec 28 from Seoul to Seattle, returning Fri, Feb 6, priced at $556 found 2 days ago
Alaska Airlines
Mon, Dec 22 - Sat, Dec 27
ICN
Seoul
SEA
Seattle
$578 Roundtrip, found 5 hours ago
$578
Roundtrip
found 5 hours ago
Select Alaska Airlines flight, departing Mon, Dec 22 from Seoul to Seattle, returning Sat, Dec 27, priced at $578 found 5 hours ago
Asiana Airlines
Thu, Nov 13 - Mon, Nov 17
ICN
Seoul
SEA
Seattle
$594 Roundtrip, found 5 hours ago
$594
Roundtrip
found 5 hours ago
Select Asiana Airlines flight, departing Thu, Nov 13 from Seoul to Seattle, returning Mon, Nov 17, priced at $594 found 5 hours ago
Delta
Mon, Nov 24 - Mon, Jan 26
ICN
Seoul
SEA
Seattle
$614 Roundtrip, found 5 hours ago
$614
Roundtrip
found 5 hours ago
Select Delta flight, departing Mon, Nov 24 from Seoul to Seattle, returning Mon, Jan 26, priced at $614 found 5 hours ago
Korean Air
Wed, Nov 5 - Thu, Nov 27
ICN
Seoul
SEA
Seattle
$616 Roundtrip, just found
$616
Roundtrip
just found
Select Korean Air flight, departing Wed, Nov 5 from Seoul to Seattle, returning Thu, Nov 27, priced at $616 just found

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

September is typically the cheapest month to fly

From $337 - $705 per traveler.

Alternative airports near Seattle

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

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $581
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $581

Frequently asked questions

How much does a flight from Incheon Intl. Airport (ICN) to Seattle - Tacoma Intl. Airport (SEA) cost?
Secure a cheap one-way flight from $393 or cheap return flight from $538 from Incheon Intl. Airport (ICN) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Incheon Intl. Airport (ICN) to Seattle - Tacoma Intl. Airport (SEA)?
November is the cheapest month to fly from ICN to SEA. Planning your trip for the off-season is often the key to better flight prices.
Which airlines fly direct from Incheon Intl. Airport (ICN) to Seattle - Tacoma Intl. Airport (SEA)?
Skip the stopovers and travel nonstop to Seattle - Tacoma Intl. Airport (SEA) from Incheon Intl. Airport (ICN) with 3 carriers, including:

  • Korean Air
  • Delta Air Lines
  • Asiana Airlines

What is the cheapest airline that flies from Incheon Intl. Airport (ICN) to Seattle - Tacoma Intl. Airport (SEA)?
While prices may vary depending on your travel dates, Korean Air and Delta Air Lines are popular choices for flights between Incheon Intl. Airport (ICN) and Seattle - Tacoma Intl. Airport (SEA). You can also compare airlines on Expedia and use the "Sort by" filter to find the cheapest fare for your ICN to SEA flight.
How many flights per day from Incheon Intl. Airport (ICN) to Seattle - Tacoma Intl. Airport (SEA)?
When flying out of Incheon Intl. Airport (ICN), you can take your pick from an average of 3 daily nonstop flights to Seattle - Tacoma Intl. Airport (SEA).
What are the most popular departure times for flights from Incheon Intl. Airport (ICN) to Seattle - Tacoma Intl. Airport (SEA)?
The 4 PM departures from ICN to SEA are the top choice for many travelers. Greater demand means you'll likely pay more for these departures. If you want to save money, book during off-peak hours.
What day of the week has the most flights from ICN to SEA?
If you fly on a Sunday, you'll get the largest range of choices for flights from Incheon Intl. Airport (ICN) to Seattle - Tacoma Intl. Airport (SEA).
What is the earliest flight from Incheon Intl. Airport (ICN) to Seattle - Tacoma Intl. Airport (SEA)?
Incheon Intl. Airport (ICN)'s first flight to Seattle - Tacoma Intl. Airport (SEA) is at approximately 4:10PM UTC+9. With a flight time of 9h 50m, you'll touch down at around 9:00AM UTC-8.
How long does it take to fly from Incheon Intl. Airport (ICN) to Seattle - Tacoma Intl. Airport (SEA)?
The average flight time from ICN to SEA is 10 hours and 1 minute, covering a distance of 5,200 mi.
What is the best time to fly from Incheon Intl. Airport (ICN) to Seattle - Tacoma Intl. Airport (SEA)?
To reach Seattle - Tacoma Intl. Airport (SEA) without delays, choose a flight that takes off from Incheon Intl. Airport (ICN) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Seattle from Incheon Intl. Airport (ICN)?
If you're traveling on a direct flight from Incheon Intl. Airport (ICN) to Seattle, Seattle - Tacoma Intl. Airport (SEA) is the only airport you can touch down at.
Is it cheaper to buy a plane ticket from Incheon Intl. Airport (ICN) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Booking your plane ticket from ICN to SEA shortly before your getaway is usually more expensive. But if there's some wiggle room with your departure times and dates, you could bag a cheap last-minute fare.
Is it cheaper to book an ICN to SEA flight and hotel package?
Compared with arranging flights and hotels separately, booking an ICN to SEA flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one place takes the hassle out of travel planning. Just secure your flights and select from our extensive range of hotels, then tailor your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Incheon Intl. Airport (ICN) to Seattle - Tacoma Intl. Airport (SEA)?
If you reserved your ICN to SEA flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of fare you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more information.

Travel information

Origin airport
Incheon Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Air Canada, Air China, Alaska Airlines, All Nippon Airways, American Airlines, Asiana Airlines, Cathay Pacific, China Airlines, Delta, EVA Airways, Emirates, Hawaiian Airlines, Japan Airlines, Korean Air, Singapore Airlines, United, WestJet
Roundtrip price
$537
Distance
5203 mi
Average flight time
-5 hours -55 mins

Book with confidence

Seoul to Seattle Flights

The cheapest times to fly from Seoul to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seoul to Seattle are during the month of November. You can find some of the cheapest flights from Seoul to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seoul to Seattle

Sunday is one of the best days to book for cheap flights from Seoul to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seoul to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seoul to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $393 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seoul to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seoul to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Seoul to Seattle Flights

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*Available to One Key members.