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$441+ 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 8/28. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — ICN
Sep 3 — Sep 101
Thu 9/3
Thu 9/10
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 August 4, 2026.

This KAYAK deal was found by Cheapflights users on 7/31. 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.
Mon 9/149:00 pm
IAD
-
ICN
1 stop31h 05m
Qatar Airways
Tue 10/131:20 am
ICN
-
IAD
1 stop27h 20m
Qatar Airways
Deal found 7/31$962
This oojo deal was found by Cheapflights users on 7/31. 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.
Mon 8/249:00 pm
IAD
-
ICN
1 stop31h 05m
Qatar Airways
Fri 12/1812:20 am
ICN
-
IAD
1 stop29h 35m
Qatar Airways
Deal found 7/31$964
This KAYAK deal was found by Cheapflights users on 7/30. 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.
Wed 9/239:00 pm
IAD
-
ICN
1 stop25h 25m
Qatar Airways
Tue 10/131:20 am
ICN
-
IAD
1 stop27h 20m
Qatar Airways
Deal found 7/30$965
This KAYAK deal was found by Cheapflights users on 8/3. 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.
Wed 8/199:00 pm
IAD
-
ICN
1 stop31h 05m
Qatar Airways
Mon 8/311:20 am
ICN
-
IAD
1 stop27h 20m
Qatar Airways
Deal found 8/3$967
This KAYAK deal was found by Cheapflights users on 8/2. 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.
Mon 11/28:05 pm
IAD
-
ICN
1 stop31h 10m
Qatar Airways
Wed 11/1112:20 am
ICN
-
IAD
1 stop45h 50m
Qatar Airways
Deal found 8/2$970
This Gotogate deal was found by Cheapflights users on 8/2. 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 9/111:05 am
IAD
-
ICN
1 stop41h 00m
Qatar Airways
Wed 12/2312:20 am
ICN
-
IAD
1 stop46h 10m
Qatar Airways
Deal found 8/2$974
This Super.com deal was found by Cheapflights users on 7/31. 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.
Tue 10/279:05 pm
IAD
-
ICN
1 stop31h 10m
Qatar Airways
Wed 11/412:20 am
ICN
-
IAD
1 stop29h 35m
Qatar Airways
Deal found 7/31$976
This Trip.com deal was found by Cheapflights users on 7/30. 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.
Mon 8/249:00 pm
IAD
-
ICN
1 stop31h 05m
Qatar Airways
Tue 9/221:20 am
ICN
-
IAD
1 stop27h 20m
Qatar Airways
Deal found 7/30$978
This Super.com deal was found by Cheapflights users on 7/31. 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 11/110:30 am
IAD
-
ICN
1 stop40h 45m
Qatar Airways
Mon 11/912:20 am
ICN
-
IAD
1 stop29h 35m
Qatar Airways
Deal found 7/31$979
This Gotogate deal was found by Cheapflights users on 7/30. 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 11/298:05 pm
IAD
-
ICN
1 stop31h 10m
Qatar Airways
Fri 12/256:30 pm
ICN
-
IAD
1 stop35h 25m
Qatar Airways
Deal found 7/30$980
This oojo deal was found by Cheapflights users on 8/2. 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.
Mon 11/211:55 pm
IAD
-
PUS
1 stop27h 45m
EVA Air
Tue 11/106:55 pm
PUS
-
IAD
1 stop40h 00m
EVA Air
Deal found 8/2$997
This Bravofly deal was found by Cheapflights users on 8/2. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/161:15 am
IAD
-
PUS
1 stop27h 45m
EVA Air
Thu 9/247:10 pm
PUS
-
IAD
1 stop39h 50m
EVA Air
Deal found 8/2$1,028

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 August 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$960
(oojo)

One-way from

$441
(Mytrip)

Popular in

December

Cheapest in

January

Average price

$1,432

Good round-trip deal

$1,095 or less

Good one-way deal

$517 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 ($106 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 August 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 August 4, 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

1:15 am-10:20 am

1 stop20h 05m

Busan Gimhae

Mon 9/14

11:20 am-10:00 pm

1 stop23h 40m

$1,047

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Mon 9/14

9:00 pm-7:10 am

2 stops45h 10m

Incheon Intl

Tue 10/13

1:20 am-3:40 pm

1 stop27h 20m

$1,130
Quickest round-trip

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Mon 8/17

1:20 pm-5:55 pm

Nonstop15h 35m

Incheon Intl

Fri 8/28

10:00 am-10:50 am

Nonstop13h 50m

$1,137

Washington, D.C.Busan

IAD - PUS

IADPUS

Washington, D.C. Dulles Intl

Mon 11/2

11:55 pm-5:40 pm

1 stop27h 45m

Busan Gimhae

Tue 11/10

6:55 pm-5:51 am

2 stops24h 56m

$1,141

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Thu 9/24

3:08 pm-2:05 pm

2 stops33h 57m

Incheon Intl

Sun 10/11

8:05 pm-5:32 am

2 stops46h 27m

$1,161

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Mon 8/17

1:50 am-7:15 pm

1 stop28h 25m

Seoul Gimpo Intl

Fri 8/28

1:50 pm-10:30 pm

1 stop21h 40m

$1,196

Washington, D.C.Busan

IAD - PUS

IADPUS

Washington, D.C. Dulles Intl

Wed 9/16

1:15 am-6:00 pm

1 stop27h 45m

Busan Gimhae

Thu 9/24

7:10 pm-5:40 am

2 stops23h 30m

$1,204

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Wed 9/16

4:56 pm-2:05 pm

2 stops32h 09m

Incheon Intl

Thu 10/15

8:00 am-5:32 am

2 stops34h 32m

$1,225

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Thu 10/22

7:13 pm-12:40 pm

2 stops28h 27m

Incheon Intl

Sun 11/1

7:35 pm-11:19 pm

2 stops41h 44m

$1,225

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Mon 10/12

1:15 am-7:15 pm

1 stop29h 00m

Seoul Gimpo Intl

Sat 10/17

1:50 pm-10:00 pm

1 stop21h 10m

$1,231

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/3

Showing 1-10 of 54 resultsSorted by cheapest first
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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 $1,342). Flying from Washington, D.C. Dulles Intl Airport to South Korea in December is currently the most expensive (average of $2,117). 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 August 4, 2026.

When flying from Washington, D.C. Dulles Intl Airport to South Korea, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 August 4, 2026.

The most flights from IAD to KR0 are scheduled on a Monday (3 on average). You will have fewer flight options on Tuesday, 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 23% of weekly flights between Washington, D.C. and South Korea have experienced delays in the past year, with the average delay time being 97 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?

Saturday tends to have the lowest number of delays on this route, whereas Friday 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 25% of flights being delayed.

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to South Korea?

The best time to book flights from Washington, D.C. Dulles Intl Airport to South Korea is 53 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 August 4, 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
1,222 reviews

Comfort

8.3

Boarding

8.5

Food

8.1

Overall

8.4

Entertainment

8.2

Crew

8.7

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
1,222 reviews
Korean Air
8.4
Very good
1,222 reviews

Comfort

8.3

Boarding

8.5

Food

8.1

Overall

8.4

Entertainment

8.2

Crew

8.7

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
8.1
Very good
102 reviews
Korean Air
8.4
Very good
1,222 reviews

Comfort

8.3

Boarding

8.5

Food

8.1

Overall

8.4

Entertainment

8.2

Crew

8.7

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
7.8
Good
8,482 reviews
Korean Air
8.4
Very good
1,222 reviews

Comfort

8.3

Boarding

8.5

Food

8.1

Overall

8.4

Entertainment

8.2

Crew

8.7

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
7.4
Good
4,464 reviews
Korean Air
8.4
Very good
1,222 reviews

Comfort

8.3

Boarding

8.5

Food

8.1

Overall

8.4

Entertainment

8.2

Crew

8.7

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 Canada
7.1
Good
11,425 reviews
Korean Air
8.4
Very good
1,222 reviews

Comfort

8.3

Boarding

8.5

Food

8.1

Overall

8.4

Entertainment

8.2

Crew

8.7

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 35m. Fly via EVA Air, Qatar Airways, or AIR PREMIA 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 Turkish Airlines. According to our data, you can fly for as low as $488. Users have also found prices from $518 and $720 on AIR PREMIA and Delta, 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 most reliable airlines from Washington, D.C. Dulles Intl Airport to South Korea?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Washington, D.C. Dulles Intl Airport to South Korea on time: AIR PREMIA (93%), Delta (80%), Korean Air (80%).

  • 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 $391. While the most popular route (Washington, D.C. Dulles Intl - Incheon Intl) can be booked for $938 on average, our data indicates $3,113 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 $1,342). Flying from Washington, D.C. Dulles Intl Airport to South Korea in December is currently the most expensive (average of $2,117). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 August 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$397Average$1,750FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$426Average$1,716FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$685Average$1,216FlexibilityNo cancel feeOn-time67%
AIR PREMIACheapest$705Average$1,288FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$816Average$1,592FlexibilityNo cancel feeOn-time71%
Air ChinaCheapest$873Average$915FlexibilityNo cancel feeOn-time67%
EVA AirCheapest$875Average$1,266FlexibilityNo cancel feeOn-time74%
Turkish AirlinesCheapest$929Average$1,109FlexibilityNo cancel feeOn-time77%
Korean AirCheapest$1,363Average$1,808FlexibilityNo cancel feeOn-time81%

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