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$428+ Cheap flights from Dulles Intl (IAD) to South Korea

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/18. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — ICN
Apr 15 — Apr 221
Wed 4/15
Wed 4/22
1 adult, Economy
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Cheap flight deals from Dulles Intl to South Korea

Cheapest flights from Dulles Intl to South Korea
Explore the most affordable flight options available from Dulles Intl to South Korea. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 16, 2026.

This Air China deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air China is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2411:00 pm
IAD
-
ICN
1 stop28h 35m
Air China
Fri 5/151:05 pm
ICN
-
IAD
1 stop19h 25m
Air China
Deal found 3/11$934
This Kiwi.com deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/241:20 pm
IAD
-
ICN
Nonstop15h 35m
Multiple Airlines
Sun 5/1711:20 am
ICN
-
IAD
3 stops59h 52m
Multiple Airlines
Deal found 3/11$943
This Kiwi.com deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/11:20 pm
IAD
-
ICN
Nonstop15h 35m
Multiple Airlines
Tue 5/268:45 pm
ICN
-
IAD
3 stops33h 42m
Multiple Airlines
Deal found 3/11$949
This Super.com deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/41:20 pm
IAD
-
ICN
Nonstop15h 35m
AIR PREMIA
Wed 5/2010:00 am
ICN
-
IAD
Nonstop13h 50m
AIR PREMIA
Deal found 3/12$951
This Kiwi.com deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/271:20 pm
IAD
-
ICN
Nonstop15h 35m
Multiple Airlines
Tue 5/268:45 pm
ICN
-
IAD
3 stops33h 42m
Multiple Airlines
Deal found 3/11$952
This Super.com deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/291:20 pm
IAD
-
ICN
Nonstop15h 35m
AIR PREMIA
Wed 5/2710:00 am
ICN
-
IAD
Nonstop13h 50m
AIR PREMIA
Deal found 3/11$954
This EVA Air deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/41:15 am
IAD
-
ICN
1 stop28h 30m
EVA Air
Wed 9/2312:00 pm
ICN
-
IAD
1 stop23h 00m
EVA Air
Deal found 3/12$958
This Super.com deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/31:20 pm
IAD
-
ICN
Nonstop15h 35m
AIR PREMIA
Sun 5/1710:00 am
ICN
-
IAD
Nonstop13h 50m
AIR PREMIA
Deal found 3/14$960
This Gotogate deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/261:20 pm
IAD
-
ICN
Nonstop15h 35m
AIR PREMIA
Sun 5/310:00 am
ICN
-
IAD
Nonstop13h 50m
AIR PREMIA
Deal found 3/11$962
This Kiwi.com deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/191:20 pm
IAD
-
ICN
Nonstop15h 35m
Multiple Airlines
Mon 9/79:50 am
ICN
-
IAD
3 stops44h 23m
Multiple Airlines
Deal found 3/14$963
This oojo deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/81:20 pm
IAD
-
ICN
Nonstop15h 35m
AIR PREMIA
Mon 5/2510:00 am
ICN
-
IAD
Nonstop13h 50m
AIR PREMIA
Deal found 3/16$968
This FlightHub deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/271:20 pm
IAD
-
ICN
Nonstop15h 35m
AIR PREMIA
Fri 5/2210:00 am
ICN
-
IAD
Nonstop13h 50m
AIR PREMIA
Deal found 3/11$969

Find flight deals from Dulles Intl to South Korea

Keep the following information in mind while searching for Dulles Intl to South Korea flight deals. Data was last updated March 16, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$934
(Air China)

One-way from

$428
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,438

Good round-trip deal

$605 or less

Good one-way deal

$425 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Seoul (SEL) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Seoul (SEL) flights.
Search Deals
From Washington, D.C. Dulles Intl to South Korea
Search Deals
One-way flight from Washington, D.C. Dulles Intl to South Korea
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($102 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($63 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to South Korea.
Search Deals
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to South Korea.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to South Korea that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 16, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to South Korea that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Busan

IAD - PUS

IADPUS

Washington, D.C. Dulles Intl

Wed 9/9

5:38 pm-5:55 pm

2 stops35h 17m

Busan Gimhae

Sun 9/13

6:55 pm-7:28 am

2 stops49h 33m

$1,209

Washington, D.C.Busan

IAD - PUS

IADPUS

Washington, D.C. Dulles Intl

Thu 4/30

7:20 pm-11:15 am

2 stops26h 55m

Busan Gimhae

Thu 5/7

8:00 pm-5:50 am

2 stops22h 50m

$1,242

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Sun 9/6

1:20 pm-5:55 pm

Nonstop15h 35m

Incheon Intl

Wed 9/9

10:00 am-10:50 am

Nonstop13h 50m

$1,302

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Tue 9/1

6:27 am-9:15 pm

2 stops25h 48m

Seoul Gimpo Intl

Thu 10/1

12:05 pm-5:00 am

2 stops29h 55m

$1,523

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Tue 9/1

1:15 pm-5:40 pm

Nonstop15h 25m

Incheon Intl

Thu 10/1

10:25 am-11:05 am

Nonstop13h 40m

$1,552

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Thu 4/23

1:15 pm-5:40 pm

Nonstop15h 25m

Incheon Intl

Fri 5/1

10:25 am-11:15 am

Nonstop13h 50m

$1,594

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Tue 4/21

1:15 pm-5:40 pm

Nonstop15h 25m

Incheon Intl

Fri 5/1

10:25 am-11:15 am

Nonstop13h 50m

$1,594

Washington, D.C.Jeju City

IAD - CJU

IADCJU

Washington, D.C. Dulles Intl

Mon 4/27

1:15 pm-12:10 pm

2 stops33h 55m

Jeju City

Mon 5/4

8:45 am-11:15 am

2 stops39h 30m

$1,643
Quickest round-trip

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Sat 8/22

1:30 pm-5:40 pm

Nonstop15h 10m

Incheon Intl

Sat 8/29

10:25 am-11:15 am

Nonstop13h 50m

$1,654

Washington, D.C.Busan

IAD - PUS

IADPUS

Washington, D.C. Dulles Intl

Mon 4/27

7:00 am-7:35 pm

2 stops23h 35m

Busan Gimhae

Mon 5/4

7:00 am-11:15 am

1 stop17h 15m

$1,664

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/11

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Best time to book a flight from Dulles Intl to South Korea

Have a flexible travel schedule? Discover the best time to fly to South Korea from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to South Korea

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to South Korea?

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to South Korea (average of $363). Flying from Washington, D.C. Dulles Intl Airport to South Korea in July is currently the most expensive (average of $1,157). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IAD to KR?

Find hourly flight availability from Dulles Intl to South Korea. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 16, 2026.

One of the essential ways to save on airfare from Washington, D.C. Dulles Intl Airport to South Korea is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 57% on airfare.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to South Korea?

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to South Korea. Price data was last updated on March 14, 2026.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to South Korea flight should consider departing on Wednesday at noon when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Washington, D.C. Dulles Intl Airport to South Korea

Explore weekly flight availability from Dulles Intl to South Korea. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 16, 2026.

The most flights from IAD to KR0 are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

How often are flights from Washington, D.C. to South Korea delayed?

About 27% of weekly flights between Washington, D.C. and South Korea have experienced delays in the past year, with the average delay time being 103 minutes.

What is the most punctual flight time for Washington, D.C. to South Korea flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Wednesday tends to have the lowest number of delays on this route, whereas Monday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Washington, D.C. to South Korea flights?

Over the last year, Korean Air have had the lowest number of delays on this route, with just 27% of flights being delayed.

Reviews of airlines servicing South Korea

Get insights into the airlines that provide service to South Korea. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to South Korea. Reviews last updated March 16, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to South Korea, such as Korean Air,AIR PREMIA, andDelta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,202 reviews

Comfort

8.3

Crew

8.7

Food

8.1

Boarding

8.5

Overall

8.4

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,202 reviews
Korean Air
8.4
Very good
1,202 reviews

Comfort

8.3

Crew

8.7

Food

8.1

Boarding

8.5

Overall

8.4

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
AIR PREMIA
8.2
Very good
83 reviews
Korean Air
8.4
Very good
1,202 reviews

Comfort

8.3

Crew

8.7

Food

8.1

Boarding

8.5

Overall

8.4

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Delta
7.9
Good
8,294 reviews
Korean Air
8.4
Very good
1,202 reviews

Comfort

8.3

Crew

8.7

Food

8.1

Boarding

8.5

Overall

8.4

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Turkish Airlines
7.3
Good
4,255 reviews
Korean Air
8.4
Very good
1,202 reviews

Comfort

8.3

Crew

8.7

Food

8.1

Boarding

8.5

Overall

8.4

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Air China
7.3
Good
141 reviews
Korean Air
8.4
Very good
1,202 reviews

Comfort

8.3

Crew

8.7

Food

8.1

Boarding

8.5

Overall

8.4

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to South Korea. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to South Korea?

    There are many flights that can get you from Washington, D.C. Dulles Intl Airport to South Korea in 15h 25m. Fly via STARLUX Airlines, AIR PREMIA, or Delta to get the fastest option. The distance between Washington, D.C. Dulles Intl Airport and South Korea is about 6939 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to South Korea one-way?

    For one-way options, check prices for AIR PREMIA. According to our data, you can fly for as low as $361. Users have also found prices from $416 and $488 on Air China and Turkish Airlines, respectively.

  • What are the most popular routes from Washington, D.C. Dulles Intl Airport to South Korea?

    The most popular route from Washington, D.C. Dulles Intl Airport to South Korea is Washington, D.C. Dulles Intl - Incheon Intl. You may also consider Washington, D.C. Dulles Intl - Seoul Gimpo Intl or Washington, D.C. Dulles Intl - Busan Gimhae.

  • What are the cheapest flights from Washington, D.C. Dulles Intl Airport to South Korea?

    Looking at all options, your cheapest flight can be booked for $287. While the most popular route (Washington, D.C. Dulles Intl - Incheon Intl) can be booked for $943 on average, our data indicates $2,374 when flying from Washington, D.C. Dulles Intl Airport to South Korea.

  • Can I find deals for flights from Dulles Intl to South Korea that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to South Korea flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to South Korea?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to South Korea.

  • Can I find deals for business class flights from Dulles Intl to South Korea?

    Yes. Cheapflights offers flight deals from Dulles Intl to South Korea by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to South Korea?

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to South Korea (average of $363). Flying from Washington, D.C. Dulles Intl Airport to South Korea in July is currently the most expensive (average of $1,157). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 9 airlines flying from Dulles Intl to South Korea

Discover the top 9 airlines that operate flights from Dulles Intl to South Korea. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$356Average$1,768FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$367Average$1,576FlexibilityNo cancel feeOn-time69%
Air ChinaCheapest$591Average$1,125FlexibilityNo cancel feeOn-time67%
AIR PREMIACheapest$595Average$1,261FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$685Average$1,378FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$759Average$2,072FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$810Average$1,056FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$816Average$1,755FlexibilityNo cancel feeOn-time71%
Korean AirCheapest$1,553Average$1,870FlexibilityNo cancel feeOn-time81%

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