HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seoul

$592+ Cheap flights from Dulles Intl (IAD) to Seoul (SEL)

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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SEL
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dulles Intl to Seoul with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Seoul are usually found in November or February, booked 31 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

Cheap flight deals from Dulles Intl to Seoul

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Seoul (SEL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated junio 12, 2025.

Round-trip from

$1,265
(Trip.com)

One-way from

$592
(Gotogate)

Popular in

July

Cheapest in

November

Average price

$1,902

Good round-trip deal

$1,046 or less

Good one-way deal

$624 or less
From Washington, D.C. Dulles Intl to Seoul (SEL)
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Seoul (SEL)
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($329 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Seoul (SEL).
Search Deals
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Seoul (SEL).
Search Deals

Find flight deals from Dulles Intl to Seoul

Cheapest flights from Dulles Intl to Seoul
Explore the most affordable flight options available from Dulles Intl to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.

This Trip.com deal was found by Cheapflights users on 6/10. 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.
lun. 9/19:40 pmIAD - ICN
1 stop22h 00mMultiple Airlines
dom. 9/2112:35 amICN - IAD
2 stops32h 30mMultiple Airlines
Deal found 6/10$1,265
This Justfly.com deal was found by Cheapflights users on 6/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/141:30 pmIAD - ICN
1 stop39h 10mTurkish Airlines
lun. 10/2712:10 amICN - IAD
1 stop25h 00mTurkish Airlines
Deal found 6/10$1,307
This Air Canada deal was found by Cheapflights users on 6/12. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/51:00 pmIAD - ICN
2 stops38h 05mAir Canada
mié. 10/156:00 pmICN - IAD
1 stop30h 13mAir Canada
Deal found 6/12$1,314
This oojo deal was found by Cheapflights users on 6/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/165:31 pmIAD - ICN
2 stops30h 09mCathay Pacific
vie. 10/243:10 pmICN - IAD
2 stops56h 35mCathay Pacific
Deal found 6/12$1,336
This FlightHub deal was found by Cheapflights users on 6/10. 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.
sáb. 9/68:23 pmIAD - ICN
2 stops25h 52mChina Airlines
mar. 9/1612:35 pmICN - IAD
2 stops36h 15mChina Airlines
Deal found 6/10$1,349
This Gotogate deal was found by Cheapflights users on 6/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/2110:20 amIAD - GMP
2 stops22h 45mMultiple Airlines
lun. 8/112:25 pmGMP - IAD
3 stops32h 12mMultiple Airlines
Deal found 6/12$1,362
This WestJet deal was found by Cheapflights users on 6/11. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/266:45 pmIAD - ICN
1 stop35h 00mWestJet
jue. 10/98:45 pmICN - IAD
1 stop34h 05mWestJet
Deal found 6/11$1,383
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/105:51 pmIAD - ICN
3 stops35h 34mAlaska Airlines
lun. 11/179:25 pmICN - IAD
2 stops33h 41mAlaska Airlines
Deal found 6/11$1,405
This oojo deal was found by Cheapflights users on 6/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/17:00 amIAD - GMP
2 stops25h 50mJapan Airlines
mié. 9/107:55 amGMP - IAD
2 stops36h 37mJapan Airlines
Deal found 6/12$1,453
This American Airlines deal was found by Cheapflights users on 6/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/238:19 pmIAD - ICN
2 stops30h 11mAmerican Airlines
lun. 9/15:25 pmICN - IAD
2 stops29h 28mAmerican Airlines
Deal found 6/12$1,481
This Ovago deal was found by Cheapflights users on 6/11. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/410:00 pmIAD - GMP
1 stop25h 05mAir China
jue. 11/132:25 pmGMP - IAD
2 stops30h 23mAir China
Deal found 6/11$1,525
This Gotogate deal was found by Cheapflights users on 6/11. 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.
lun. 11/1011:05 amIAD - GMP
1 stop34h 15mANA
lun. 12/812:25 pmGMP - IAD
1 stop34h 45mANA
Deal found 6/11$1,568

Cheapflights Fare Finder

Customize your flight search to find flights from Dulles Intl to Seoul 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 junio 12, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Seoul that are best for you.

Fly from

Dulles Intl

Fly to

Seoul

Route

Depart

Return

Price

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

lun. 9/1

9:40 pm-8:40 am

1 stop22h 00m

Incheon Intl

dom. 9/21

12:35 am-8:05 pm

2 stops32h 30m

$1,265

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

jue. 8/21

1:30 pm-8:40 am

1 stop30h 10m

Incheon Intl

dom. 8/31

11:20 pm-11:45 am

1 stop25h 25m

$1,316

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

mar. 7/22

9:35 am-4:15 pm

1 stop17h 40m

Incheon Intl

mar. 7/29

5:45 pm-4:10 pm

2 stops35h 25m

$1,318

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

sáb. 9/6

8:23 pm-11:15 am

2 stops25h 52m

Incheon Intl

mar. 9/16

12:35 pm-11:50 am

2 stops36h 15m

$1,349

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

lun. 7/21

10:20 am-10:05 pm

2 stops22h 45m

Seoul Gimpo Intl

lun. 8/11

2:25 pm-9:37 am

3 stops32h 12m

$1,362

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

mié. 7/9

6:45 pm-6:45 pm

1 stop35h 00m

Incheon Intl

jue. 7/17

8:45 pm-5:54 pm

1 stop34h 09m

$1,420

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

lun. 9/1

7:00 am-9:50 pm

2 stops25h 50m

Seoul Gimpo Intl

mié. 9/10

7:55 am-7:32 am

2 stops36h 37m

$1,453

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

sáb. 8/23

8:19 pm-3:30 pm

2 stops30h 11m

Incheon Intl

lun. 9/1

5:25 pm-9:53 am

2 stops29h 28m

$1,481

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

vie. 8/15

8:19 pm-7:00 pm

3 stops33h 41m

Incheon Intl

vie. 8/29

9:25 pm-4:47 pm

2 stops32h 22m

$1,501

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

mar. 8/26

11:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

mar. 9/2

8:35 am-7:30 pm

1 stop23h 55m

$1,578

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 29 results
1
2
3

The best insider tips for Washington, D.C. Dulles Intl Airport to Seoul flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Dulles Intl Airport to Seoul trip
Airports
IAD

For a smooth departure from IAD, use the Aerotrain to quickly reach distant concourses, but allow extra time for security queues.

Read more about IADby Ramsey Qubein
ICN

Upon arrival at ICN, the AREX express train offers a quick 40-50 minute ride to Seoul Station, ideal for reaching the city efficiently.

Read more about ICNby Gabriel Leigh
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on ICN

Gabriel Leigh

Gabriel Leigh

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on IAD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Best time to book a flight from Dulles Intl to Seoul

Have a flexible travel schedule? Discover the best time to fly to Seoul 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 Seoul

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

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Seoul. Price data was last updated on June 9, 2025.

The best time to book flights from Washington, D.C. Dulles Intl Airport to Seoul is 31 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.

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

Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Seoul (average of $1,000). Flying from Washington, D.C. Dulles Intl Airport to Seoul in December is currently the most expensive (average of $1,635). 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 SEL?

Find hourly flight availability from Dulles Intl to Seoul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 12, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 39% on flights from Washington, D.C. Dulles Intl Airport to Seoul by exploring options for tickets in the evening.

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

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Seoul. Price data was last updated on September 29, 2024.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Seoul flight should consider departing on Tuesday evenings when fares are most often at their lowest. Friday 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 Seoul

Explore weekly flight availability from Dulles Intl to Seoul. 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 junio 12, 2025.

The most flights from IAD to SEL 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).

Rainfall in Seoul by month

Plan your trip to Seoul by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seoul ranges from 1.1 - 10.0 inches per month. July is typically the wettest month, when rainfall can reach 10.0 in. December is typically the driest time to visit Seoul when rainfall is around 1.1 in.

Temperature in Seoul by month

Plan your trip to Seoul by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seoul, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Seoul

Get insights into the airlines that provide service to Seoul. 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 Seoul. Reviews last updated junio 12, 2025.
Read through reviews of airlines operating flights from Washington, D.C. to Seoul, such as EVA Air, Korean Air and Japan Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Entertainment

8.0

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very good
1,202 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Entertainment

8.0

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Korean Air
8.4
Very good
1,088 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Entertainment

8.0

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Japan Airlines
8.3
Very good
1,490 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Entertainment

8.0

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
China Airlines
8.3
Very good
738 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Entertainment

8.0

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
ANA
8.3
Very good
882 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Entertainment

8.0

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Related info for your journey

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

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Seoul round-trip?

    Flying on Turkish Airlines is currently your cheapest option to Seoul, with prices starting at $1,316. Additional round-trip tickets that might be worth considering are offered by Air Canada and China Airlines, with the lowest prices starting at $1,318 and $1,349, respectively. Turkish Airlines is currently priced 15% below the average price you’ll pay for this route.

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

    One-way options have recently been found by users for as low as $592 on Turkish Airlines. Other airlines that offer cheap prices include Air Canada from $605 and China Airlines from $677 one-way.

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

    The cheapest flight price from Washington, D.C. Dulles Intl Airport to Seoul is $497. On average you can expect to pay $4,266. The most popular route, (Washington, D.C. Dulles Intl - Incheon Intl), can usually be booked for $942.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Seoul 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 Seoul?

    Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Seoul (average of $1,000). Flying from Washington, D.C. Dulles Intl Airport to Seoul in December is currently the most expensive (average of $1,635). 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 8 airlines flying from Dulles Intl to Seoul

Discover the top 8 airlines that operate flights from Dulles Intl to Seoul. 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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$367Average$2,347FlexibilityNo cancel feeOn-time69%
Air ChinaCheapest$591Average$747FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$759Average$1,597FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$809Average$1,040FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$865Average$1,191FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$876Average$1,257FlexibilityNo cancel feeOn-time71%
Korean AirCheapest$1,548Average$1,871FlexibilityNo cancel feeOn-time81%
DeltaCheapest$1,575Average$2,092FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.