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

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      Travellers and cabin class, 1 Adult, Economy
      Delta
      Korean Air
      Air Premia

      Compare Washington Dulles to Seoul flight deals

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

      Book the best Seoul fare with no extra fees

      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 $1,220. Find the lowest prices on one-way and return tickets right here.
      Seoul.$1,220 per passenger.Departing Tue, 3 Nov, returning Thu, 19 Nov.Return flight with Ethiopian Airlines.Outbound indirect flight with Ethiopian Airlines, departs from Washington Dulles on Tue, 3 Nov, arriving in Incheon International.Inbound indirect flight with Ethiopian Airlines, departs from Incheon International on Thu, 19 Nov, arriving in Washington Dulles.Price includes taxes and charges.From $1,220, select.
      Seoul.$1,221 per passenger.Departing Fri, 23 Oct, returning Fri, 13 Nov.Return flight with Ethiopian Airlines.Outbound indirect flight with Ethiopian Airlines, departs from Washington Dulles on Fri, 23 Oct, arriving in Incheon International.Inbound indirect flight with Ethiopian Airlines, departs from Incheon International on Fri, 13 Nov, arriving in Washington Dulles.Price includes taxes and charges.From $1,221, select.
      Seoul.$1,224 per passenger.Departing Sat, 28 Nov, returning Sat, 5 Dec.Return flight with Ethiopian Airlines.Outbound indirect flight with Ethiopian Airlines, departs from Washington Dulles on Sat, 28 Nov, arriving in Incheon International.Inbound indirect flight with Ethiopian Airlines, departs from Incheon International on Sat, 5 Dec, arriving in Washington Dulles.Price includes taxes and charges.From $1,224, select.
      Seoul.$1,227 per passenger.Departing Sat, 17 Oct, returning Sun, 25 Oct.Return flight with Ethiopian Airlines.Outbound indirect flight with Ethiopian Airlines, departs from Washington Dulles on Sat, 17 Oct, arriving in Incheon International.Inbound indirect flight with Ethiopian Airlines, departs from Incheon International on Sun, 25 Oct, arriving in Washington Dulles.Price includes taxes and charges.From $1,227, select.
      Seoul.$1,407 per passenger.Departing Sun, 1 Nov, returning Wed, 11 Nov.Return flight with Air Premia.Outbound direct flight with Air Premia departs from Washington Dulles on Sun, 1 Nov, arriving in Incheon International.Inbound direct flight with Air Premia departs from Incheon International on Wed, 11 Nov, arriving in Washington Dulles.Price includes taxes and charges.From $1,407, select.
      Seoul.$1,407 per passenger.Departing Fri, 2 Oct, returning Wed, 7 Oct.Return flight with Air Premia.Outbound direct flight with Air Premia departs from Washington Dulles on Fri, 2 Oct, arriving in Incheon International.Inbound direct flight with Air Premia departs from Incheon International on Wed, 7 Oct, arriving in Washington Dulles.Price includes taxes and charges.From $1,407, select.
      Seoul.$1,407 per passenger.Departing Mon, 12 Oct, returning Mon, 9 Nov.Return flight with Air Premia.Outbound direct flight with Air Premia departs from Washington Dulles on Mon, 12 Oct, arriving in Incheon International.Inbound direct flight with Air Premia departs from Incheon International on Mon, 9 Nov, arriving in Washington Dulles.Price includes taxes and charges.From $1,407, select.
      Seoul.$1,455 per passenger.Departing Wed, 11 Nov, returning Wed, 2 Dec.Return flight with Air Premia.Outbound direct flight with Air Premia departs from Washington Dulles on Wed, 11 Nov, arriving in Incheon International.Inbound direct flight with Air Premia departs from Incheon International on Wed, 2 Dec, arriving in Washington Dulles.Price includes taxes and charges.From $1,455, select.
      Seoul.$1,463 per passenger.Departing Tue, 1 Dec, returning Wed, 9 Dec.Return flight with Frontier Airlines and Zipair.Outbound indirect flight with Frontier Airlines, departs from Washington Dulles on Tue, 1 Dec, arriving in Incheon International.Inbound indirect flight with Zipair, departs from Incheon International on Wed, 9 Dec, arriving in Washington Dulles.Price includes taxes and charges.From $1,463, select.
      Seoul.$1,479 per passenger.Departing Wed, 3 Feb, returning Wed, 16 Jun.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Washington Dulles on Wed, 3 Feb, arriving in Incheon International.Inbound indirect flight with Air Canada, departs from Incheon International on Wed, 16 Jun, arriving in Washington Dulles.Price includes taxes and charges.From $1,479, select.
      Seoul.$1,486 per passenger.Departing Wed, 3 Feb, returning Wed, 17 Feb.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Washington Dulles on Wed, 3 Feb, arriving in Incheon International.Inbound indirect flight with Air Canada, departs from Incheon International on Wed, 17 Feb, arriving in Washington Dulles.Price includes taxes and charges.From $1,486, select.
      Seoul.$1,488 per passenger.Departing Tue, 4 May, returning Tue, 18 May.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Washington Dulles on Tue, 4 May, arriving in Incheon International.Inbound indirect flight with Turkish Airlines, departs from Incheon International on Tue, 18 May, arriving in Washington Dulles.Price includes taxes and charges.From $1,488, select.
      Seoul.$1,488 per passenger.Departing Wed, 7 Apr, returning Tue, 27 Apr.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Washington Dulles on Wed, 7 Apr, arriving in Incheon International.Inbound indirect flight with Turkish Airlines, departs from Incheon International on Tue, 27 Apr, arriving in Washington Dulles.Price includes taxes and charges.From $1,488, select.
      Seoul.$1,488 per passenger.Departing Mon, 1 Mar, returning Fri, 19 Mar.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Washington Dulles on Mon, 1 Mar, arriving in Incheon International.Inbound indirect flight with Turkish Airlines, departs from Incheon International on Fri, 19 Mar, arriving in Washington Dulles.Price includes taxes and charges.From $1,488, select.
      Seoul.$1,489 per passenger.Departing Tue, 12 Jan, returning Thu, 28 Jan.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Washington Dulles on Tue, 12 Jan, arriving in Incheon International.Inbound indirect flight with Turkish Airlines, departs from Incheon International on Thu, 28 Jan, arriving in Washington Dulles.Price includes taxes and charges.From $1,489, select.
      Seoul.$1,489 per passenger.Departing Thu, 15 Apr, returning Fri, 14 May.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Washington Dulles on Thu, 15 Apr, arriving in Incheon International.Inbound indirect flight with Turkish Airlines, departs from Incheon International on Fri, 14 May, arriving in Washington Dulles.Price includes taxes and charges.From $1,489, select.
      How did we find these deals? The deals you see here are the lowest prices for flight tickets from Washington Dulles to Seoul found in the last 4 days, and are subject to change and availability.

      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 November.
      Oct
      from $1,227
      Nov
      from $1,220
      Dec
      from $1,463
      Jan
      from $1,489
      Feb
      from $1,486
      Mar
      from $1,488
      Apr
      from $1,488
      May
      from $1,488
      Jun
      from $2,078
      Jul
      from $1,620
      Aug
      from $1,535
      Sep
      from $1,531

      When’s the best time to visit Seoul?

      We analysed thousands of flight and hotel prices, plus a whole heap of weather data, to show you what Seoul is typically like each month. If you're after a great deal, November currently has the lowest return flights from $1,220. But if you're searching for sunshine, July is the warmest month, with average temperatures of 24°C - 30°C.

      October

      Temperature11°C - 20°C
      RainfallModerate
      (61–120mm)
      Cheapest return flight$1,227
      Find a flight

      November

      Temperature3°C - 13°C
      RainfallDry
      (21–60mm)
      Cheapest return flight$1,220
      Find a flight

      December

      Temperature-5°C - 4°C
      RainfallDry
      (21–60mm)
      Cheapest return flight$1,463
      Find a flight

      January

      Temperature-7°C - 3°C
      RainfallDry
      (21–60mm)
      Cheapest return flight$1,489
      Find a flight

      February

      Temperature-4°C - 6°C
      RainfallVery dry
      (0–20mm)
      Cheapest return flight$1,486
      Find a flight

      March

      Temperature2°C - 13°C
      RainfallDry
      (21–60mm)
      Cheapest return flight$1,488
      Find a flight

      April

      Temperature8°C - 19°C
      RainfallModerate
      (61–120mm)
      Cheapest return flight$1,488
      Find a flight

      May

      Temperature13°C - 23°C
      RainfallModerate
      (61–120mm)
      Cheapest return flight$1,488
      Find a flight

      June

      Temperature19°C - 28°C
      RainfallWet
      (121–250mm)
      Cheapest return flight$2,078
      Find a flight

      July

      Temperature24°C - 30°C
      RainfallVery wet
      (250+mm)
      Cheapest return flight$1,620
      Find a flight

      Direct flights from Washington Dulles to Seoul

      Air Premia
      Delta
      Korean Air

      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 $1,523
      Search flights

      Incheon International

      48km from central Seoul
      Cheapest
      from $1,214
      Search flights

      Washington D.C. to Seoul: Flight information

      The things to know before you go.
      Cheapest flight found$1,220
      Cheapest month to flyNovember
      Average flight time15 hrs, 37 mins
      Most popular airlineDelta
      Average flights per week24

      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 $1,220. 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 37 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 October 2026, there are 24 flights per week flying from Washington Dulles to Seoul.
      The cheapest month to fly from Washington Dulles to Seoul is usually November.
      If you're flying from Washington Dulles Airport, the cheapest airport near Seoul is Incheon International – which is 47.9 km away from the centre of Seoul. We've found flights into this airport from $1,220.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Washington Dulles Airport to Seoul on Tuesday, 3 November 2026.
      Yes – the average flight time is 15 hours and 37 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 October, the average temperature is usually around 15°C. July is typically the warmest month in Seoul, when it usually averages around 30°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging -7°C. The rainiest month is August.
      Currently, Ethiopian Airlines and Air Premia offer 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

      • $643 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 $1,220. 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 smart, explore more

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      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 12 days.