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Cheap flights from Seoul to Washington Dulles

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Compare Seoul to Washington Dulles flight deals

Find the cheapest month or even day of the year to fly to Washington Dulles

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Flight deals from Seoul to Washington Dulles

Looking for a cheap last-minute deal or the best round-trip flight from Seoul to Washington Dulles? Find the lowest prices on one-way and round-trip tickets right here.
Washington, D.C..$227 per passenger.Departing Mon, Aug 18, returning Sat, Mar 14.Round-trip flight with Lufthansa.Outbound indirect flight with Lufthansa, departing from Incheon International on Mon, Aug 18, arriving in Washington Dulles.Inbound indirect flight with Lufthansa, departing from Washington Dulles on Sat, Mar 14, arriving in Incheon International.Price includes taxes and charges.From $227, select.
Washington, D.C..$785 per passenger.Departing Wed, May 7, returning Tue, May 13.Round-trip flight with Asiana Airlines and Alaska Airlines.Outbound indirect flight with Asiana Airlines, departing from Incheon International on Wed, May 7, arriving in Washington Dulles.Inbound indirect flight with Alaska Airlines, departing from Washington Dulles on Tue, May 13, arriving in Incheon International.Price includes taxes and charges.From $785, select.
Washington, D.C..$877 per passenger.Departing Tue, Jun 3, returning Mon, Jun 9.Round-trip flight with Asiana Airlines and Alaska Airlines.Outbound indirect flight with Asiana Airlines, departing from Incheon International on Tue, Jun 3, arriving in Washington Dulles.Inbound indirect flight with Alaska Airlines, departing from Washington Dulles on Mon, Jun 9, arriving in Incheon International.Price includes taxes and charges.From $877, select.
Washington, D.C..$901 per passenger.Departing Tue, May 20, returning Wed, Jun 4.Round-trip flight with Asiana Airlines and Hawaiian Airlines.Outbound indirect flight with Asiana Airlines, departing from Incheon International on Tue, May 20, arriving in Washington Dulles.Inbound indirect flight with Hawaiian Airlines, departing from Washington Dulles on Wed, Jun 4, arriving in Incheon International.Price includes taxes and charges.From $901, select.
Washington, D.C..$907 per passenger.Departing Tue, Sep 16, returning Tue, Sep 23.Round-trip flight with Air Canada.Outbound indirect flight with Air Canada, departing from Incheon International on Tue, Sep 16, arriving in Washington Dulles.Inbound indirect flight with Air Canada, departing from Washington Dulles on Tue, Sep 23, arriving in Incheon International.Price includes taxes and charges.From $907, select.
Washington, D.C..$916 per passenger.Departing Thu, Feb 5, returning Thu, Mar 12.Round-trip flight with Air Canada.Outbound indirect flight with Air Canada, departing from Incheon International on Thu, Feb 5, arriving in Washington Dulles.Inbound indirect flight with Air Canada, departing from Washington Dulles on Thu, Mar 12, arriving in Incheon International.Price includes taxes and charges.From $916, select.
Washington, D.C..$922 per passenger.Departing Mon, Nov 3, returning Mon, Nov 24.Round-trip flight with Air Canada.Outbound indirect flight with Air Canada, departing from Incheon International on Mon, Nov 3, arriving in Washington Dulles.Inbound indirect flight with Air Canada, departing from Washington Dulles on Mon, Nov 24, arriving in Incheon International.Price includes taxes and charges.From $922, select.
Washington, D.C..$922 per passenger.Departing Tue, Sep 9, returning Tue, Oct 21.Round-trip flight with Air Canada.Outbound indirect flight with Air Canada, departing from Incheon International on Tue, Sep 9, arriving in Washington Dulles.Inbound indirect flight with Air Canada, departing from Washington Dulles on Tue, Oct 21, arriving in Incheon International.Price includes taxes and charges.From $922, select.

Find the cheapest month to fly from Seoul to Washington Dulles

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seoul to Washington Dulles flights are currently cheapest in May.
May
from $785
Jun
from $877
Jul
from $1,093
Aug
from $1,215
Sep
from $907
Oct
from $922
Nov
from $922
Dec
from $929
Jan
from $991
Feb
from $929
Mar
from $1,307
Apr
from $992

Direct flights from Seoul to Washington Dulles

Seoul to Washington Dulles: Alternative routes

Compare routes from Seoul to Washington, D.C. below. You may find an airport to fly into that's cheaper, faster, or easier than Washington Dulles.

Seoul to Washington, D.C.: Flight information

The things to know before you go.
Cheapest flight found$227
Cheapest month to flyAugust
Average flight time13 hrs, 38 mins
Most popular airlineDelta
Average flights per week15

Finding cheap flights from Seoul to Washington Dulles: Frequently asked questions

The best price we found for a round-trip flight from Seoul to Washington Dulles is $227. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
13 hours and 38 minutes is the average flight time from Seoul to Washington Dulles.
Delta and Korean Air fly direct from Seoul to Washington Dulles.
There are 15 flights per week flying from Seoul to Washington Dulles, as of May 2025.
The cheapest month to fly from Seoul to Washington Dulles is usually May 2025.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seoul to Washington Dulles Airport on Monday, August 18, 2025.
Yes – the average flight time is 13 hours and 38 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Washington Dulles but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Washington, D.C. is around 40 days in advance, so don’t leave your flight to the last minute.

Flying from Seoul to Washington Dulles International Airport (IAD): what you need to know

  • There are a couple of main airports you can fly out of in Seoul. Check out your options departing from Incheon International Airport (ICN) or Gimpo International Airport (GMP) when reserving your flight from Seoul to Washington Dulles International Airport (IAD).

  • Approximately 13 hours 41 minutes is how long you can expect to be traveling on a direct flight from Seoul to Washington Dulles International Airport.

  • Washington Dulles International Airport is located in Washington DC. The city operates in the UTC-4 timezone and is 13 hours behind Seoul.

  • Incheon International Airport (ICN) to Washington Dulles International Airport (IAD) is the most popular route. There are 10 direct flights a week to choose from. If you have things to do before leaving, hop on the last flight with Korean Air at 10:25. Opt for the first ICN to IAD departure with Korean Air at 10:15 if you want to get going earlier.

  • For stress-free travel, turn up at the airport two hours ahead of international flights and an hour before domestic departures. This will give you enough time to catch your flight from Seoul to IAD.

  • During popular months such as July, you'll want to get to the airport earlier than normal. Arrive two hours before domestic departures and four hours ahead for international flights whenever you're flying during high season in general.

Gimpo International Airport (GMP)

  • Want more options for a direct flight from Seoul to Washington Dulles International Airport (IAD)? Check out the fares leaving from Gimpo International Airport (GMP).

  • From GMP, direct flights from Seoul to IAD can be booked with Korean Air.

  • Split up your flight from Seoul to Washington Dulles International Airport with a stop so you can recharge or cross another place off your list. Popular stopovers between Gimpo International Airport and IAD are:

    • Harry Reid Airport (formerly McCarran Airport) Airport (LAS)

    • Beijing Capital International Airport (PEK)

    • Hartsfield-Jackson Atlanta International Airport (ATL)

  • GMP is about 16 kilometers from central Seoul. Plan ahead to work out the fastest way to reach the terminal.

  • You're going on vacation, so why not enjoy an additional night away? Consider staying at one of these hotels near Gimpo International Airport the day before your flight from Seoul to IAD:

About Washington Dulles International Airport (IAD)

Getting from Washington Dulles International Airport (IAD) to central Washington DC

  • Washington Dulles International Airport to central Washington DC takes about 51 minutes by car. It's approximately 56 kilometers away. Discover what options are available, such as car rentals, cabs or ride-sharing services.

  • If you're taking public transport, expect a journey of roughly 3 hours and 26 minutes.

How to find the cheapest flights from Seoul to Washington Dulles International Airport (IAD)

  • Lock in a one-way ticket from Seoul to Washington Dulles International Airport from $416 or travel return from just $227. Fares listed are subject to change and may differ when you make your booking.

  • It's usually smart to book ahead of time if you want to get cheap tickets from Seoul to IAD. That's because airlines change prices based on demand, which tends to increase closer to the date of departure.

  • Take advantage of the 'Whole month' tool and compare the prices of tickets from Seoul to Washington Dulles International Airport across the month. The lowest fares are highlighted in green, making it easy to find a flight your budget will love.

  • Log into your online account or use the app to create a Price Alert. You'll be notified right away if there's a deal you can't miss. It's simple to do, and it'll save you the hassle of looking for a cheap ticket from Seoul to IAD every day.

  • Use the filters to tailor your flights from Seoul to Washington Dulles International Airport. Simply select your preferred arrival and departure times, airlines and number of stops. You can also sort your results by 'Cheapest' to see the best deals.

The best time to fly from Seoul to Washington Dulles International Airport (IAD)

  • July is the busiest month to catch a flight from Seoul to Washington Dulles International Airport while February is the quietest. To work out the best time to visit Washington DC, consider whether you like a lively atmosphere or a quieter vibe.

  • Before booking a flight from Seoul to IAD, think about the type of weather you enjoy. July is the warmest month in Washington DC, with the temperature ranging from 19ºC to 33ºC.

  • If you like cooler conditions, lock in a cheap flight from Seoul to Washington Dulles International Airport in January when temperatures average between -6ºC and 10ºC.

More about Washington DC

  • Start your Washington DC trip right by choosing the perfect place to stay. As soon as you've booked your flight from Seoul to Washington Dulles International Airport, explore our range of hotels including:

  • There are so many things to see and do in this city it can be hard to work out where to begin. White House Historical Association, The White House and National Mall are top sights which should feature on every Washington DC itinerary.

Complete your Washington DC trip with a car rental

  • After you've locked in your hotel and cheap flight from Seoul to Washington Dulles International Airport, the next task is choosing one of our car rentals in Washington DC. Check out the offers and easily compare your options on price, pick-up convenience, fuel policies, and more.

Plan the rest of your trip from Seoul to Washington, D.C.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.