Cheap flights from Seoul to Washington Dulles

Compare Seoul to Washington Dulles flight deals

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

Book the best Washington Dulles fare with no extra fees

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 Airport? If you want to travel next month, round-trip fares start from $1,112. Find the lowest prices on one-way and round-trip tickets right here.

Washington, D.C..$963 per passenger.Departing Mon, Sep 21, returning Wed, Sep 23.Round-trip flight with United.Outbound indirect flight with United, departing from Incheon International on Mon, Sep 21, arriving in Washington Dulles.Inbound indirect flight with United, departing from Washington Dulles on Wed, Sep 23, arriving in Incheon International.Price includes taxes and charges.From $963, select.

Washington, D.C..$1,078 per passenger.Departing Tue, Sep 29, returning Fri, Nov 13.Round-trip flight with Air China.Outbound indirect flight with Air China, departing from Incheon International on Tue, Sep 29, arriving in Washington Dulles.Inbound indirect flight with Air China, departing from Washington Dulles on Fri, Nov 13, arriving in Gimpo International.Price includes taxes and charges.From $1,078, select.

Washington, D.C..$1,101 per passenger.Departing Tue, Oct 27, returning Tue, Nov 3.Round-trip flight with Air China.Outbound indirect flight with Air China, departing from Incheon International on Tue, Oct 27, arriving in Washington Dulles.Inbound indirect flight with Air China, departing from Washington Dulles on Tue, Nov 3, arriving in Incheon International.Price includes taxes and charges.From $1,101, select.

Washington, D.C..$1,112 per passenger.Departing Tue, Jun 9, returning Fri, Jun 12.Round-trip flight with Air China.Outbound indirect flight with Air China, departing from Incheon International on Tue, Jun 9, arriving in Washington Dulles.Inbound indirect flight with Air China, departing from Washington Dulles on Fri, Jun 12, arriving in Incheon International.Price includes taxes and charges.From $1,112, select.

Washington, D.C..$1,117 per passenger.Departing Fri, Jun 26, returning Sat, Aug 29.Round-trip flight with Air Seoul and Frontier Airlines.Outbound indirect flight with Air Seoul, departing from Incheon International on Fri, Jun 26, arriving in Washington Dulles.Inbound indirect flight with Frontier Airlines, departing from Washington Dulles on Sat, Aug 29, arriving in Incheon International.Price includes taxes and charges.From $1,117, select.

Washington, D.C..$1,130 per passenger.Departing Mon, Sep 7, returning Wed, Sep 23.Round-trip flight with Air Premia.Outbound direct flight with Air Premia departing from Incheon International on Mon, Sep 7, arriving in Washington Dulles.Inbound direct flight with Air Premia departing from Washington Dulles on Wed, Sep 23, arriving in Incheon International.Price includes taxes and charges.From $1,130, select.

Washington, D.C..$1,130 per passenger.Departing Sun, Nov 15, returning Fri, Feb 12.Round-trip flight with Air Premia.Outbound direct flight with Air Premia departing from Incheon International on Sun, Nov 15, arriving in Washington Dulles.Inbound direct flight with Air Premia departing from Washington Dulles on Fri, Feb 12, arriving in Incheon International.Price includes taxes and charges.From $1,130, select.

Washington, D.C..$1,130 per passenger.Departing Mon, Nov 2, returning Fri, Nov 13.Round-trip flight with Air Premia.Outbound direct flight with Air Premia departing from Incheon International on Mon, Nov 2, arriving in Washington Dulles.Inbound direct flight with Air Premia departing from Washington Dulles on Fri, Nov 13, arriving in Incheon International.Price includes taxes and charges.From $1,130, select.

Washington, D.C..$1,131 per passenger.Departing Mon, Aug 24, returning Fri, Sep 11.Round-trip flight with Peach and Porter Airlines.Outbound indirect flight with Peach, departing from Incheon International on Mon, Aug 24, arriving in Washington Dulles.Inbound indirect flight with Porter Airlines, departing from Washington Dulles on Fri, Sep 11, arriving in Incheon International.Price includes taxes and charges.From $1,131, select.

Washington, D.C..$1,142 per passenger.Departing Mon, Nov 2, returning Mon, Dec 14.Round-trip flight with United.Outbound indirect flight with United, departing from Incheon International on Mon, Nov 2, arriving in Washington Dulles.Inbound indirect flight with United, departing from Washington Dulles on Mon, Dec 14, arriving in Incheon International.Price includes taxes and charges.From $1,142, select.

Washington, D.C..$1,142 per passenger.Departing Wed, Oct 14, returning Wed, Dec 2.Round-trip flight with United.Outbound indirect flight with United, departing from Incheon International on Wed, Oct 14, arriving in Washington Dulles.Inbound indirect flight with United, departing from Washington Dulles on Wed, Dec 2, arriving in Incheon International.Price includes taxes and charges.From $1,142, select.

Washington, D.C..$1,142 per passenger.Departing Wed, Aug 26, returning Fri, Aug 28.Round-trip flight with United.Outbound indirect flight with United, departing from Incheon International on Wed, Aug 26, arriving in Washington Dulles.Inbound indirect flight with United, departing from Washington Dulles on Fri, Aug 28, arriving in Incheon International.Price includes taxes and charges.From $1,142, select.

Washington, D.C..$1,142 per passenger.Departing Wed, Jan 13, returning Wed, Jan 20.Round-trip flight with United.Outbound indirect flight with United, departing from Incheon International on Wed, Jan 13, arriving in Washington Dulles.Inbound indirect flight with United, departing from Washington Dulles on Wed, Jan 20, arriving in Incheon International.Price includes taxes and charges.From $1,142, select.

Washington, D.C..$1,142 per passenger.Departing Wed, Dec 16, returning Wed, Dec 23.Round-trip flight with United.Outbound indirect flight with United, departing from Incheon International on Wed, Dec 16, arriving in Washington Dulles.Inbound indirect flight with United, departing from Washington Dulles on Wed, Dec 23, arriving in Incheon International.Price includes taxes and charges.From $1,142, select.

Washington, D.C..$1,142 per passenger.Departing Mon, Dec 28, returning Sat, Jan 2.Round-trip flight with United.Outbound indirect flight with United, departing from Incheon International on Mon, Dec 28, arriving in Washington Dulles.Inbound indirect flight with United, departing from Washington Dulles on Sat, Jan 2, arriving in Incheon International.Price includes taxes and charges.From $1,142, select.

Washington, D.C..$1,142 per passenger.Departing Fri, Oct 23, returning Fri, Oct 30.Round-trip flight with United.Outbound indirect flight with United, departing from Incheon International on Fri, Oct 23, arriving in Washington Dulles.Inbound indirect flight with United, departing from Washington Dulles on Fri, Oct 30, arriving in Incheon International.Price includes taxes and charges.From $1,142, 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 September.

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Jan

Feb

Mar

Apr

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	$963
Cheapest month to fly	September
Average flight time	13 hrs, 42 mins
Most popular airline	Delta
Average flights per week	19

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

How much are round-trip flights from Seoul to Washington Dulles?

The best price we found for a round-trip flight from Seoul to Washington Dulles is $963. 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.

How long does it take to fly from Seoul to Washington Dulles?

13 hours and 42 minutes is the average flight time from Seoul to Washington Dulles.

Which airlines fly direct from Seoul to Washington Dulles?

Delta, Korean Air and Air Premia fly direct from Seoul to Washington Dulles.

How many flights are there a week from Seoul to Washington Dulles?

There are 38 flights per week flying from Seoul to Washington Dulles, as of May 2026.

When is the cheapest time to fly from Seoul to Washington Dulles?

The cheapest month to fly from Seoul to Washington Dulles is usually September.

Which upcoming date is cheapest to fly from Seoul to Washington Dulles Airport on?

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, September 21, 2026.

Can I get a direct flight from Seoul to Washington Dulles Airport?

Yes – the average flight time is 13 hours and 42 minutes.

How can I find the best flight deal to Washington Dulles?

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.

When is the best time to book flights to Washington, D.C.?

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

Planning your trip starts with working out where you'll fly out of in Seoul. Seoul Incheon International Airport (ICN) is the city's main airport, so check out your options for reserving a flight from Seoul to Washington Dulles International Airport (IAD) leaving from here.
Around 13 hours 40 minutes is the usual time it takes for a direct Seoul to Washington Dulles International Airport flight.
Washington Dulles International Airport is located in Washington DC. The city runs on the UTC-5 timezone and is 14 hours behind Seoul.
The most popular route is from Seoul Incheon International Airport (ICN) to Washington Dulles International Airport (IAD). Choose from 9 direct services each week. Korean Air operates a 10:15am departure between ICN and IAD.
For hassle-free travel, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This way, you'll have plenty of time to catch your flight from Seoul to IAD.
Flying during a peak time such as January? School holidays and other high seasons can lead to longer queues at security. Be extra cautious and arrive up to four hours before international flights and two hours before a domestic departure.

Airports in Seoul

Seoul Incheon International Airport (ICN)

Seoul Incheon International Airport (ICN) is a convenient option for traveling directly to your destination. Nonstop flights from Seoul to Washington Dulles International Airport (IAD) depart from this terminal.
When departing from ICN, you can catch a direct flight from Seoul to Washington Dulles International Airport with Korean Air.
The majority of travelers prefer to book seats with Korean Air between ICN and IAD.
With an impressive 93.44% of services arriving as planned, Korean Air is the top on-time carrier serving this route.
A stopover is the perfect opportunity to take a travel break and perhaps even visit a new city. When searching for cheap flights from Seoul to IAD leaving from Seoul Incheon International Airport (ICN), deselect the 'Direct flights only' box to find all potential stops. Popular options include:
- Atlanta Hartsfield-Jackson International Airport (ATL)
- Dallas Fort Worth International Airport (DFW)
- Minneapolis-Saint Paul International Airport (MSP)
Located around 48 kilometers from the center of Seoul, ICN can be reached in about 1 hour 5 minutes by car (depending on traffic). The journey on public transport will take roughly 50 minutes.
Catching an early flight from Seoul to Washington Dulles International Airport? Avoid the hassle of rushing to the terminal (and get a little more snooze time) by picking one of these stays near Seoul Incheon International Airport:
When it comes to Seoul Incheon International Airport's on-time performance, 74% of flights arrive within the scheduled time frame.

Seoul Gimpo International Airport (GMP)

Consider adding a stopover to your journey at Tokyo Haneda International Airport (HND). It's a key transfer point for flights from Seoul to Washington Dulles International Airport (IAD) leaving Seoul Gimpo International Airport.
GMP is around 16 kilometers from central Seoul. It takes 30 minutes or so to get to the airport in a car from the city center. Public transport takes approximately 35 minutes.
Flying out early in the morning? Think about checking in to one of these accommodation options near Seoul Gimpo International Airport the day before your Seoul to IAD flight:
Flights from Seoul Gimpo International Airport have a track record for punctuality, with 80% of them landing on schedule.

About Washington Dulles International Airport (IAD)

Have a late flight from Seoul to Washington Dulles International Airport? Don't let it leave you bleary-eyed. Stay at one of these hotels near IAD and turn out the lights sooner:
Booking your vehicle around one week ahead of your Seoul to Washington Dulles International Airport flight can help you find the best deal.
You'll find IAD at 1 Saarinen Circle.

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

Washington Dulles International Airport is around 40 kilometers from the center of Washington DC. It takes around 45 minutes or so to drive to the city.
It takes around 1 hour 10 minutes if you're traveling by public transport.

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

At the moment, $468 is the best price we've found for a one-way ticket from Seoul to Washington Dulles International Airport. The cheapest price for a return flight is $963. Keep in mind fares can change due to demand at the time of booking.
Book four months before you travel. Research into pricing trends suggests this is the ideal window for finding cheap flights from Seoul to IAD.
Plan your trip for September. That's the best month for scoring a great bargain on Seoul to Washington Dulles International Airport tickets. If your travel dates are flexible, use the 'Whole month' tool to find the lowest price across each month.
You don't need to check back in every day to find out if fares have dropped when you create a Price Alert. We'll notify you when a new deal shows up on plane tickets from Seoul to IAD.
Uncover a great deal on a flight from Seoul to Washington Dulles International Airport with the help of the filters. Pick your ideal arrival and departure times, airlines and number of stops. You can also sort your results by 'Cheapest,' 'Fastest' or 'Best.'

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

February is the quietest month for flights from Seoul to Washington Dulles International Airport (IAD), while June is the most popular. Find the best time to visit Washington DC based on whether you want a laid-back vibe or a lively atmosphere.
The warmest month in Washington DC is July, with temperatures ranging between 19ºC (66ºF) and 33ºC (91ºF). Book your Seoul to IAD plane ticket then if that's your idea of comfortable weather.
January has temperatures of between -6ºC (21ºF) and 10ºC (50ºF). Search for cheap tickets from Seoul to Washington Dulles International Airport around that time if you like traveling in cooler conditions.

More about Washington DC

Start your Washington DC trip off on the right foot by choosing the perfect place to stay. Once you've booked your flight from Seoul to Washington Dulles International Airport, browse our range of accommodation options including:
All great vacations should include some sightseeing. Lincoln Memorial, The White House and Smithsonian National Museum of Natural History are essential stops on your Washington DC itinerary.

Explore more of the United States

Washington DC has plenty going for it, but there are so many other corners of the United States waiting to be discovered. Around 225 kilometers northeast of Washington DC, a visit to Philadelphia will keep you on the move. Check out popular attractions like Independence Hall, Liberty Bell and Philadelphia Museum of Art.
Around 274 kilometers southeast of Washington DC, Virginia Beach is another favorite stop in the United States. Experience major highlights starting with Virginia Beach Boardwalk, Resort Beach and Neptune's Park.