South Korea

$426+ 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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — ICN
Feb 28 — Mar 71
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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 January 29, 2026.

This oojo deal was found by Cheapflights users on 1/27. 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.
Tue 3/1011:00 pm
IAD
-
ICN
1 stop23h 40m
Air China
Tue 3/311:05 pm
ICN
-
IAD
1 stop19h 25m
Air China
Deal found 1/27$873
This Gotogate deal was found by Cheapflights users on 1/28. 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.
Tue 3/1011:00 pm
IAD
-
ICN
1 stop23h 40m
Multiple Airlines
Tue 4/145:45 pm
ICN
-
IAD
2 stops34h 54m
Multiple Airlines
Deal found 1/28$881
This Mytrip deal was found by Cheapflights users on 1/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/1311:00 pm
IAD
-
ICN
1 stop28h 35m
Multiple Airlines
Mon 3/167:10 pm
ICN
-
IAD
2 stops38h 44m
Multiple Airlines
Deal found 1/27$893
This Gotogate deal was found by Cheapflights users on 1/28. 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.
Tue 3/1011:00 pm
IAD
-
ICN
1 stop23h 40m
Multiple Airlines
Tue 3/177:10 pm
ICN
-
IAD
2 stops38h 44m
Multiple Airlines
Deal found 1/28$894
This FlightHub deal was found by Cheapflights users on 1/28. 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.
Tue 3/1711:00 pm
IAD
-
ICN
1 stop23h 40m
Air China
Mon 3/233:05 pm
ICN
-
IAD
1 stop41h 25m
Air China
Deal found 1/28$898
This Trip.com deal was found by Cheapflights users on 1/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1711:00 pm
IAD
-
ICN
1 stop23h 40m
Multiple Airlines
Tue 4/287:05 pm
ICN
-
IAD
1 stop38h 24m
Multiple Airlines
Deal found 1/27$900
This CheapOair deal was found by Cheapflights users on 1/26. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/610:00 pm
IAD
-
ICN
1 stop25h 20m
Multiple Airlines
Mon 3/165:55 pm
ICN
-
IAD
2 stops59h 16m
Multiple Airlines
Deal found 1/26$902
This Booking.com deal was found by Cheapflights users on 1/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:00 pm
IAD
-
ICN
1 stop33h 45m
Multiple Airlines
Tue 4/145:45 pm
ICN
-
IAD
2 stops30h 38m
Multiple Airlines
Deal found 1/27$905
This KAYAK deal was found by Cheapflights users on 1/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:00 pm
IAD
-
ICN
1 stop23h 35m
Air China
Tue 4/281:05 pm
ICN
-
IAD
1 stop19h 25m
Air China
Deal found 1/27$908
This Gotogate deal was found by Cheapflights users on 1/28. 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.
Tue 4/1411:00 pm
IAD
-
ICN
1 stop33h 45m
Multiple Airlines
Thu 4/305:45 pm
ICN
-
IAD
2 stops30h 38m
Multiple Airlines
Deal found 1/28$922
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 3/1311:00 pm
IAD
-
PUS
2 stops32h 50m
Multiple Airlines
Fri 3/2012:45 pm
PUS
-
IAD
1 stop19h 45m
Multiple Airlines
Deal found 1/27$1,229
This Expedia deal was found by Cheapflights users on 1/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:30 am
IAD
-
PUS
2 stops35h 40m
Multiple Airlines
Fri 11/1312:45 pm
PUS
-
IAD
1 stop19h 45m
Multiple Airlines
Deal found 1/28$1,236

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$873
(oojo)

One-way from

$426
(oojo)

Popular in

December

Cheapest in

March

Average price

$1,204

Good round-trip deal

$1,131 or less

Good one-way deal

$554 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Seoul (SEL) flight deals.
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Seoul (SEL) flights.
From Washington, D.C. Dulles Intl to South Korea
One-way flight from Washington, D.C. Dulles Intl to South Korea
Highest demand for flights based on searches. 6% potential increase in price ($103 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($65 potential savings vs. average RT price).
Average for round-trip flights in January 2026
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to South Korea.
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to South Korea.

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 January 29, 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

Dulles Intl

Fly to

South Korea

Route

Depart

Return

Price

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Tue 5/19

9:45 pm-5:40 pm

1 stop30h 55m

Incheon Intl

Mon 5/25

11:20 pm-11:35 am

1 stop25h 15m

$1,158

Washington, D.C.Busan

IAD - PUS

IADPUS

Washington, D.C. Dulles Intl

Fri 3/13

11:00 pm-8:50 pm

2 stops32h 50m

Busan Gimhae

Fri 3/20

12:45 pm-7:30 pm

1 stop19h 45m

$1,229

Washington, D.C.Jeju City

IAD - CJU

IADCJU

Washington, D.C. Dulles Intl

Fri 3/13

11:00 pm-2:15 pm

1 stop26h 15m

Jeju City

Fri 3/20

9:10 am-7:30 pm

2 stops23h 20m

$1,345

Washington, D.C.Busan

IAD - PUS

IADPUS

Washington, D.C. Dulles Intl

Fri 3/13

11:00 pm-11:45 am

1 stop23h 45m

Busan Gimhae

Fri 3/20

12:45 pm-7:30 pm

1 stop19h 45m

$1,399

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Tue 5/26

9:45 am-9:20 pm

2 stops22h 35m

Incheon Intl

Wed 7/8

7:05 pm-11:16 am

2 stops29h 11m

$1,450

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Wed 7/22

6:55 pm-5:30 pm

2 stops33h 35m

Incheon Intl

Wed 8/19

7:35 pm-11:59 pm

1 stop17h 24m

$1,460

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Mon 7/6

6:05 am-5:30 pm

1 stop22h 25m

Incheon Intl

Wed 7/29

7:35 pm-7:32 am

1 stop24h 57m

$1,508

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Wed 7/15

6:55 pm-5:30 pm

2 stops33h 35m

Incheon Intl

Wed 7/29

7:35 pm-4:01 pm

1 stop33h 26m

$1,509

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Wed 4/8

1:10 pm-11:05 am

2 stops32h 55m

Seoul Gimpo Intl

Wed 7/8

7:55 pm-2:03 pm

2 stops31h 08m

$1,519

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Tue 4/28

1:15 pm-5:40 pm

Nonstop15h 25m

Incheon Intl

Mon 6/1

10:25 am-11:15 am

Nonstop13h 50m

$1,552

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 49 results
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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 $380). Flying from Washington, D.C. Dulles Intl Airport to South Korea in July is currently the most expensive (average of $1,153). 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 January 29, 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 61% 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 January 24, 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 January 29, 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 31% of weekly flights between Washington, D.C. and South Korea have experienced delays in the past year, with the average delay time being 115 minutes.

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

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

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

Saturday 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 31% 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 January 29, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to South Korea, such as Korean Air, Delta, and Turkish Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Comfort

8.3

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Food

8.1

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.

Comfort

8.3

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Food

8.1

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.

Comfort

8.3

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Food

8.1

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.

Comfort

8.3

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Food

8.1

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.

Comfort

8.3

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Food

8.1

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.

Comfort

8.3

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Food

8.1

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 23h 45m. Fly via Turkish Airlines, Air China, or Alaska Airlines to get the fastest option. The distance between Washington, D.C. Dulles Intl Airport and South Korea is about 7040 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 Breeze Airways. According to our data, you can fly for as low as $30. Users have also found prices from $53 and $98 on United Airlines and Delta, respectively.

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

  • 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 $473. While the most popular route (Washington, D.C. Dulles Intl - Incheon Intl) can be booked for $864 on average, our data indicates $2,543 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 $380). Flying from Washington, D.C. Dulles Intl Airport to South Korea in July is currently the most expensive (average of $1,153). 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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Alternative routes for Dulles Intl to South Korea

See prices for flight routes from nearby airports that may be better suited for you.

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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$317Average$1,566FlexibilityNo cancel feeOn-time69%
DeltaCheapest$356Average$1,809FlexibilityNo cancel feeOn-timeN/A
Air ChinaCheapest$591Average$1,125FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$759Average$2,072FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$791Average$1,005FlexibilityNo cancel feeOn-time77%
AIR PREMIACheapest$807Average$1,559FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$877Average$1,712FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$972Average$1,552FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$1,553Average$2,058FlexibilityNo cancel feeOn-time81%

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