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Cheap Flights from Washington D.C. (IAD) to Seoul (SELA)

Compare Washington Dulles to Seoul flight deals

Find the cheapest month or even day of the year to fly to Seoul

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Flight deals from Washington Dulles to Seoul

Looking for a cheap last-minute deal or the best return flight from Washington Dulles Airport to Seoul? If you want to travel next month, return fares start from $1,989. Find the lowest prices on one-way and return tickets right here.
Seoul.$1,590 per passenger.Departing Fri, 4 Sep, returning Mon, 21 Sep.Return flight with Air Premia.Outbound direct flight with Air Premia departs from Washington Dulles on Fri, 4 Sep, arriving in Incheon International.Inbound direct flight with Air Premia departs from Incheon International on Mon, 21 Sep, arriving in Washington Dulles.Price includes taxes and charges.From $1,590, select.
Seoul.$1,592 per passenger.Departing Fri, 28 Aug, returning Mon, 14 Sep.Return flight with Air Premia.Outbound direct flight with Air Premia departs from Washington Dulles on Fri, 28 Aug, arriving in Incheon International.Inbound direct flight with Air Premia departs from Incheon International on Mon, 14 Sep, arriving in Washington Dulles.Price includes taxes and charges.From $1,592, select.
Seoul.$1,592 per passenger.Departing Sun, 2 Aug, returning Sun, 30 Aug.Return flight with Air Premia.Outbound direct flight with Air Premia departs from Washington Dulles on Sun, 2 Aug, arriving in Incheon International.Inbound direct flight with Air Premia departs from Incheon International on Sun, 30 Aug, arriving in Washington Dulles.Price includes taxes and charges.From $1,592, select.
Seoul.$1,628 per passenger.Departing Tue, 8 Sep, returning Wed, 23 Dec.Return flight with EVA Air.Outbound indirect flight with EVA Air, departs from Washington Dulles on Tue, 8 Sep, arriving in Incheon International.Inbound indirect flight with EVA Air, departs from Incheon International on Wed, 23 Dec, arriving in Washington Dulles.Price includes taxes and charges.From $1,628, select.
Seoul.$1,638 per passenger.Departing Mon, 4 Jan, returning Fri, 29 Jan.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Washington Dulles on Mon, 4 Jan, arriving in Incheon International.Inbound indirect flight with Turkish Airlines, departs from Incheon International on Fri, 29 Jan, arriving in Washington Dulles.Price includes taxes and charges.From $1,638, select.
Seoul.$1,641 per passenger.Departing Wed, 20 Jan, returning Wed, 3 Feb.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Washington Dulles on Wed, 20 Jan, arriving in Incheon International.Inbound indirect flight with Turkish Airlines, departs from Incheon International on Wed, 3 Feb, arriving in Washington Dulles.Price includes taxes and charges.From $1,641, select.
Seoul.$1,643 per passenger.Departing Mon, 8 Mar, returning Fri, 12 Mar.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Washington Dulles on Mon, 8 Mar, arriving in Incheon International.Inbound indirect flight with Turkish Airlines, departs from Incheon International on Fri, 12 Mar, arriving in Washington Dulles.Price includes taxes and charges.From $1,643, select.
Seoul.$1,646 per passenger.Departing Wed, 25 Nov, returning Wed, 2 Dec.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Washington Dulles on Wed, 25 Nov, arriving in Incheon International.Inbound indirect flight with Turkish Airlines, departs from Incheon International on Wed, 2 Dec, arriving in Washington Dulles.Price includes taxes and charges.From $1,646, select.
Seoul.$1,646 per passenger.Departing Mon, 9 Nov, returning Wed, 25 Nov.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Washington Dulles on Mon, 9 Nov, arriving in Incheon International.Inbound indirect flight with Turkish Airlines, departs from Incheon International on Wed, 25 Nov, arriving in Washington Dulles.Price includes taxes and charges.From $1,646, select.
Seoul.$1,647 per passenger.Departing Fri, 6 Nov, returning Mon, 23 Nov.Return flight with Air Premia.Outbound direct flight with Air Premia departs from Washington Dulles on Fri, 6 Nov, arriving in Incheon International.Inbound direct flight with Air Premia departs from Incheon International on Mon, 23 Nov, arriving in Washington Dulles.Price includes taxes and charges.From $1,647, select.
Seoul.$1,650 per passenger.Departing Tue, 2 Feb, returning Tue, 16 Feb.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Washington Dulles on Tue, 2 Feb, arriving in Incheon International.Inbound indirect flight with Turkish Airlines, departs from Incheon International on Tue, 16 Feb, arriving in Washington Dulles.Price includes taxes and charges.From $1,650, select.
Seoul.$1,668 per passenger.Departing Thu, 8 Apr, returning Wed, 14 Apr.Return flight with EVA Air.Outbound indirect flight with EVA Air, departs from Washington Dulles on Thu, 8 Apr, arriving in Incheon International.Inbound indirect flight with EVA Air, departs from Incheon International on Wed, 14 Apr, arriving in Washington Dulles.Price includes taxes and charges.From $1,668, select.
Seoul.$1,669 per passenger.Departing Sun, 6 Sep, returning Sun, 8 Nov.Return flight with Air Premia.Outbound direct flight with Air Premia departs from Washington Dulles on Sun, 6 Sep, arriving in Incheon International.Inbound direct flight with Air Premia departs from Incheon International on Sun, 8 Nov, arriving in Washington Dulles.Price includes taxes and charges.From $1,669, select.
Seoul.$1,669 per passenger.Departing Mon, 24 Aug, returning Fri, 6 Nov.Return flight with Air Premia.Outbound direct flight with Air Premia departs from Washington Dulles on Mon, 24 Aug, arriving in Incheon International.Inbound direct flight with Air Premia departs from Incheon International on Fri, 6 Nov, arriving in Washington Dulles.Price includes taxes and charges.From $1,669, select.
Seoul.$1,670 per passenger.Departing Thu, 20 Aug, returning Mon, 21 Dec.Return flight with EVA Air.Outbound indirect flight with EVA Air, departs from Washington Dulles on Thu, 20 Aug, arriving in Incheon International.Inbound indirect flight with EVA Air, departs from Incheon International on Mon, 21 Dec, arriving in Washington Dulles.Price includes taxes and charges.From $1,670, select.
Seoul.$1,670 per passenger.Departing Tue, 25 Aug, returning Mon, 5 Oct.Return flight with EVA Air.Outbound indirect flight with EVA Air, departs from Washington Dulles on Tue, 25 Aug, arriving in Incheon International.Inbound indirect flight with EVA Air, departs from Incheon International on Mon, 5 Oct, arriving in Washington Dulles.Price includes taxes and charges.From $1,670, select.

Find the cheapest month to fly from Washington Dulles to Seoul

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington Dulles to Seoul flights are currently cheapest in September.
Jun
from $1,974
Jul
from $1,997
Aug
from $1,592
Sep
from $1,590
Oct
from $1,793
Nov
from $1,646
Dec
from $2,127
Jan
from $1,638
Feb
from $1,650
Mar
from $1,643
Apr
from $1,668
May
from $2,052

Direct flights from Washington Dulles to Seoul

Alternative Washington Dulles to Seoul routes

Looking for the cheapest, fastest or easiest route from Washington Dulles to Seoul? You could fly into the following airports instead.

Gimpo International

17km from central Seoul
Closest
from $1,650
Search flights

Incheon International

48km from central Seoul
Cheapest
from $1,590
Search flights

Washington D.C. to Seoul: Flight information

The things to know before you go.
Cheapest flight found$1,585
Cheapest month to flySeptember
Average flight time15 hrs, 33 mins
Most popular airlineDelta
Average flights per week19

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

There are 2 airports in Seoul: Gimpo International and Incheon International.
The best price we found for a return flight from Washington Dulles to Seoul is $1,585. 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.
15 hours and 33 minutes is the average flight time from Washington Dulles to Seoul.
Delta, Korean Air and Air Premia fly direct from Washington Dulles to Seoul.
As of June 2026, there are 95 flights per week flying from Washington Dulles to Seoul.
The cheapest month to fly from Washington Dulles to Seoul is usually September.
If you're flying from Washington Dulles Airport, the cheapest airport near Seoul is Incheon International – which is 47.8 km away from the centre of Seoul. We've found flights into this airport from $1,585.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Washington Dulles Airport to Seoul on Friday, 4 September 2026.
Yes – the average flight time is 15 hours and 33 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 Seoul 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 Seoul is around 40 days in advance, so don’t leave your flight to the last minute.
In June, the average temperature is usually around 20°C. August is typically the warmest month in Seoul, when it usually averages around 28°C. You can expect the least rain in January. The coldest month is January, with temperatures averaging -8°C. The rainiest month is July.
Currently, Air Premia offers the cheapest flight tickets to Seoul.

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

  • Expect to be travelling for 13 hours 40 minutes. That's the average duration of a direct flight from Washington Dulles International Airport to Seoul.

  • The timezone in Seoul is UTC+9. The city is 14 hours ahead of Washington DC, where Washington Dulles International Airport is located.

  • There are nine services each week between Washington Dulles International Airport (IAD) and Seoul Incheon International Airport (ICN). This is the most popular flight route.

  • To avoid missing your IAD to Seoul flight, leave plenty of time to check in and find your gate. Turning up two hours before international departures and an hour before domestic flights is the standard rule.

  • During popular months such as June, you'll want to get to the airport earlier than usual. Plan to arrive two hours before domestic departures and four hours ahead of international flights whenever you're travelling during peak periods in general.

  • You can book a direct Washington Dulles International Airport to Seoul ticket. Start your journey at IAD and land at Seoul Incheon International Airport (ICN).

  • Look out for promotions from Korean Air. This airline has direct flights from Washington Dulles International Airport to Seoul.

  • We make it simple to book plane tickets from IAD to Seoul with a stopover. To see all the options, deselect 'Direct flights only.' Then, select a flight that has a stop long enough to tour the city of your choice. Major stopovers include:

    • Atlanta Hartsfield-Jackson International Airport (ATL)

    • Tokyo Haneda International Airport (HND)

    • Beijing Capital International Airport (PEK)

  • The journey from central Washington DC to IAD takes around 1 hour 10 minutes by public transport. If you drive, ride-share or take a taxi, you'll cover the 40 kilometres in 45 minutes or so, depending on traffic conditions.

  • Have an early flight from Washington Dulles International Airport to Seoul? Avoid the hassle of rushing to the terminal (and sneak in some extra precious sleep) by choosing one of these hotels close to IAD:

  • 77% of flights leaving from Washington Dulles International Airport arrive at their destination on time.

  • IAD's address is 1 Saarinen Circle.

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

  • $601 is the cheapest price we've found for a one-way Washington Dulles International Airport to Seoul flight. A round-trip plane ticket right now is $1,585. Depending on when and how early you book, these fares can change.

  • Get cheap flights from IAD to Seoul by booking six months ahead. Based on our research, that's the sweet spot for finding the biggest deals.

  • The best month for finding cheap Washington Dulles International Airport to Seoul tickets is November. Use the 'Whole month' tool to compare all available prices, then choose the dates offering the lowest fares.

  • You don't need to keep checking in to find out if fares have dropped when you set up a Price Alert. We'll notify you the moment there's an extra saving on cheap flights from IAD to Seoul.

  • Find an affordable flight from Washington Dulles International Airport to Seoul with the help of our filters. Choose your ideal duration, departure time and airlines, then sort the results by 'Cheapest' to see the best deals.

Airports in Seoul

Seoul Incheon International Airport (ICN)

  • Seoul Incheon International Airport (ICN) is around 48 kilometres from the centre of Seoul. If you're catching a taxi or a ride-share, the drive takes about 1 hour 5 minutes.

  • It'll take around 50 minutes to get there by public transport.

  • Consider booking a hotel near ICN if you're coming in on a late flight from Washington Dulles International Airport to Seoul. Choose one of these options and avoid the hassle of a long transfer:

  • To get the best deal, book your ride from Seoul Incheon International Airport around four weeks in advance of your flight from IAD to Seoul.

Seoul Gimpo International Airport (GMP)

  • Seoul Gimpo International Airport (GMP) is roughly 16 kilometres from the centre of Seoul. Following your flight from Washington Dulles International Airport to Seoul, it'll take you around 30 minutes to reach the heart of the city in a taxi or ride-share.

  • If you travel by public transport, you'll get to the city centre in 35 minutes or so.

  • Hang the 'Do not disturb' sign on your door and rest at a hotel near GMP. Here are a few options where you can put your feet up after your IAD to Seoul flight:

  • Get first dibs on the best options. Reserving your ride from GMP one week in advance often means better prices and a wider choice of vehicles.

Best time to go to Seoul

  • It's time to pick your travel dates for your flight from Washington Dulles International Airport to Seoul. January is the busiest month to travel to Seoul. If you want a more relaxed atmosphere, go in December.

  • Book a Washington Dulles International Airport to Seoul plane ticket with a departure in August to explore the city during its warmest month. Expect temperatures to range from 19ºC (66ºF) to 32ºC (90ºF).

  • Look for cheap tickets from IAD to Seoul in January if you like travelling in cooler conditions. Temperatures are at their lowest then, ranging between -12ºC (10ºF) and 4ºC (39ºF) on average.

More about Seoul

  • After booking your flight from Washington Dulles International Airport to Seoul, choose a hotel that puts you right where the action is. Make one of these options your base for exploring Seoul:

  • Bukchon Hanok Village and Gyeongbokgung Palace are just two of the top attractions to add to your Seoul itinerary. Keep the adventure rolling by checking out N Seoul Tower.

Explore more of South Korea

  • You've seen Seoul, now it's time to discover other parts of South Korea. Journey around 322 kilometres southeast to Busan to tick off its leading sights. From Gamcheon Culture Village to Haeundae Beach and Beautiful View Busan - Diamond Bridge, there's plenty to keep you busy.

  • Around 241 kilometres southeast of Seoul, Daegu is another essential stop in South Korea. Experience this destination's highlights firsthand at Alive Aquarium Daegu, Nature Park and Seonsa Historical Park.

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

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