฿21,255 Cheap Flights from Seoul (ICN) to Washington (IAD)

View ฿21,255 flight on Thu, 11 Sep 2025Opens in a new window

Popular airlines from Incheon Intl. Airport (ICN) to Washington Dulles International Airport (IAD)

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Cheap Flights from Seoul (ICN) to Washington (IAD)

Prices were available within the past 7 days and start at ฿21,255 for one-way flights and ฿17,995 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, 12 Sep - Thu, 18 Sep
ICN
Seoul
IAD
Washington
฿17,995 Return, found 13 hours ago
฿17,995
Return
found 13 hours ago
Select United flight, departing Fri, 12 Sep from Seoul to Washington, returning Thu, 18 Sep, priced at ฿17,995 found 13 hours ago
United
Fri, 12 Sep - Thu, 18 Sep
ICN
Seoul
IAD
Washington
฿27,570 Return, found 13 hours ago
฿27,570
Return
found 13 hours ago
Select United flight, departing Fri, 12 Sep from Seoul to Washington, returning Thu, 18 Sep, priced at ฿27,570 found 13 hours ago
United
Thu, 11 Sep - Wed, 24 Sep
ICN
Seoul
IAD
Washington
฿31,110 Return, found 6 days ago
฿31,110
Return
found 6 days ago
Select United flight, departing Thu, 11 Sep from Seoul to Washington, returning Wed, 24 Sep, priced at ฿31,110 found 6 days ago
United
Mon, 4 Aug - Mon, 11 Aug
ICN
Seoul
IAD
Washington
฿31,300 Return, found 1 day ago
฿31,300
Return
found 1 day ago
Select United flight, departing Mon, 4 Aug from Seoul to Washington, returning Mon, 11 Aug, priced at ฿31,300 found 1 day ago
Asiana Airlines
Fri, 12 Sep - Thu, 18 Sep
ICN
Seoul
IAD
Washington
฿33,440 Return, found 13 hours ago
฿33,440
Return
found 13 hours ago
Select Asiana Airlines flight, departing Fri, 12 Sep from Seoul to Washington, returning Thu, 18 Sep, priced at ฿33,440 found 13 hours ago
United
Mon, 4 Aug - Mon, 11 Aug
ICN
Seoul
IAD
Washington
฿33,645 Return, found 1 day ago
฿33,645
Return
found 1 day ago
Select United flight, departing Mon, 4 Aug from Seoul to Washington, returning Mon, 11 Aug, priced at ฿33,645 found 1 day ago
Asiana Airlines
Thu, 11 Sep - Wed, 24 Sep
ICN
Seoul
IAD
Washington
฿34,040 Return, found 6 days ago
฿34,040
Return
found 6 days ago
Select Asiana Airlines flight, departing Thu, 11 Sep from Seoul to Washington, returning Wed, 24 Sep, priced at ฿34,040 found 6 days ago
Air Canada
Mon, 4 Aug - Mon, 11 Aug
ICN
Seoul
IAD
Washington
฿38,670 Return, found 1 day ago
฿38,670
Return
found 1 day ago
Select Air Canada flight, departing Mon, 4 Aug from Seoul to Washington, returning Mon, 11 Aug, priced at ฿38,670 found 1 day ago
Korean Air
Fri, 12 Sep - Thu, 18 Sep
ICN
Seoul
IAD
Washington
฿41,865 Return, found 13 hours ago
฿41,865
Return
found 13 hours ago
Select Korean Air flight, departing Fri, 12 Sep from Seoul to Washington, returning Thu, 18 Sep, priced at ฿41,865 found 13 hours ago
Delta
Fri, 12 Sep - Thu, 18 Sep
ICN
Seoul
IAD
Washington
฿41,925 Return, found 13 hours ago
฿41,925
Return
found 13 hours ago
Select Delta flight, departing Fri, 12 Sep from Seoul to Washington, returning Thu, 18 Sep, priced at ฿41,925 found 13 hours ago

Find the cheapest month to fly from Seoul (ICN) to Washington (IAD)

February is typically the cheapest month to fly

From ฿22,340 - ฿33,200 per traveller.

Graph displaying average flight prices per month

Flight from Seoul to Washington route information
Origin airport
Incheon Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
Air France, Asiana Airlines, Delta, Emirates, Ethiopian Airlines, Etihad Airways, KLM, Korean Air, Lufthansa, Qatar Airways, Turkish Airlines, United
Return price
฿17,995
Distance
11108 km
Average flight time
14 hours 50 mins

Perfect flights from Seoul to Washington

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Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Incheon Intl. to Washington Dulles Intl. ticket options cater to your travel preferences, with incredible one-way fares from ฿21,255 and roundtrip prices from ฿17,995. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Washington Dulles Intl. and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in Washington.

Frequently asked questions

How much is a flight from Seoul–Incheon Intl. Airport to Dulles Intl. Airport?
Start packing your suitcase, because round-trip journeys between Seoul–Incheon Intl. Airport and Washington Dulles Intl. Airport (IAD) start from ฿17,995. That's based on fares listed within the last 7 days on Expedia for flights departing within the next year. Prices can move quickly, so book now to nab the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Incheon Airport to Washington Dulles Intl. Airport (IAD)?
Every air carrier has its own terms and conditions. If you do decide to cancel, follow the instructions on our Customer Service Portal.
How do I find cheap flights from Seoul–Incheon Intl. Airport to Dulles Intl. Airport 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 Seoul–Incheon Intl. Airport to Dulles Intl. Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Incheon Intl. Airport (ICN) to IAD?
With a flight distance of 11,200 kilometres from Seoul–Incheon Intl. Airport (ICN) to IAD (IAD), this is a long flight. Make sure you keep well hydrated and move your legs every so often.
Which airlines fly direct from Incheon Airport to Washington Dulles Intl. Airport (IAD)?
Korean Air (KE) will take you from Incheon Airport to Washington Dulles Intl. Airport (IAD) safely and reliably. Take your pick of 30 direct flights every month on this route.
Are ICN to Dulles Intl. Airport flight tickets cheaper when they're purchased at the last minute?
Last-minute planners can sometimes nab a bargain, with some of the cheapest airfares from Seoul–Incheon Intl. Airport to Washington Dulles Intl. Airport (IAD) showing up a few weeks before the departure date. If you'd rather plan ahead of time, Expedia compares and updates all the best flight deals continually — as early as a year in advance in some cases. It does depend on the carrier though, as not all airlines release prices that far in advance.

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