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$420+ Cheap flights from Washington, D.C. (WAS) 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 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — ICN
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
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Cheap flight deals from Washington, D.C. to South Korea

Cheapest flights from Washington, D.C. to South Korea
Explore the most affordable flight options available from Washington, D.C. to South Korea. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.

This Gotogate deal was found by Cheapflights users on 1/31. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:00 pm
IAD
-
ICN
1 stop26h 15m
Multiple Airlines
Mon 4/135:45 pm
ICN
-
IAD
2 stops39h 44m
Multiple Airlines
Deal found 1/31$859
This CrystalTravel deal was found by Cheapflights users on 2/2. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/610:00 pm
IAD
-
ICN
1 stop23h 40m
Air China
Fri 3/1311:10 am
ICN
-
IAD
1 stop21h 20m
Air China
Deal found 2/2$863
This oojo deal was found by Cheapflights users on 2/2. 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.
Tue 3/1011:00 pm
IAD
-
ICN
1 stop23h 40m
Air China
Fri 3/2011:10 am
ICN
-
IAD
1 stop21h 20m
Air China
Deal found 2/2$872
This oojo deal was found by Cheapflights users on 2/3. 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 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 2/3$873
This Gotogate deal was found by Cheapflights users on 2/1. 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.
Fri 3/1311:00 pm
IAD
-
ICN
1 stop25h 55m
Air China
Mon 3/233:05 pm
ICN
-
IAD
1 stop41h 25m
Air China
Deal found 2/1$878
This Booking.com deal was found by Cheapflights users on 2/1. 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.
Fri 4/2411:00 pm
IAD
-
ICN
1 stop28h 35m
Multiple Airlines
Mon 5/255:45 pm
ICN
-
IAD
1 stop25h 37m
Multiple Airlines
Deal found 2/1$879
This Gotogate deal was found by Cheapflights users on 2/2. 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.
Fri 4/1011:00 pm
IAD
-
ICN
1 stop26h 15m
Air China
Mon 4/203:30 pm
ICN
-
IAD
1 stop41h 00m
Air China
Deal found 2/2$882
This Gotogate deal was found by Cheapflights users on 2/2. 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.
Fri 3/610:00 pm
IAD
-
ICN
1 stop25h 20m
Air China
Mon 3/163:05 pm
ICN
-
IAD
1 stop41h 25m
Air China
Deal found 2/2$883
This Gotogate deal was found by Cheapflights users on 1/31. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:00 pm
IAD
-
ICN
1 stop34h 00m
Air China
Mon 4/133:30 pm
ICN
-
IAD
1 stop41h 00m
Air China
Deal found 1/31$888
This Mytrip deal was found by Cheapflights users on 2/1. 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.
Tue 4/711:00 pm
IAD
-
ICN
1 stop28h 35m
Multiple Airlines
Tue 4/285:45 pm
ICN
-
IAD
2 stops31h 05m
Multiple Airlines
Deal found 2/1$890
This China Airlines deal was found by Cheapflights users on 2/2. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/217:11 pm
BWI
-
ICN
2 stops27h 19m
Multiple Airlines
Mon 5/1112:45 pm
ICN
-
BWI
2 stops29h 59m
Multiple Airlines
Deal found 2/2$1,016
This China Airlines deal was found by Cheapflights users on 2/3. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/307:16 pm
BWI
-
ICN
2 stops27h 14m
Multiple Airlines
Mon 5/118:05 pm
ICN
-
BWI
2 stops22h 39m
Multiple Airlines
Deal found 2/3$1,054

Find flight deals from Washington, D.C. to South Korea

Keep the following information in mind while searching for Washington, D.C. to South Korea flight deals. Data was last updated February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$859
(Gotogate)

One-way from

$420
(CrystalTravel)

Popular in

December

Cheapest in

March

Average price

$1,219

Good round-trip deal

$1,164 or less

Good one-way deal

$548 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. (WAS) to South Korea
Search Deals
One-way flight from Washington, D.C. (WAS) to South Korea
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($101 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($64 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. (WAS) to South Korea.
Search Deals
Price to beat on a one-way flight from Washington, D.C. (WAS) to South Korea.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 February 3, 2026.
Use the filters below to find and compare flights from Washington, D.C. to South Korea that are best for you.

Fly from

Washington, D.C.

Fly to

South Korea

Route

Depart

Return

Price

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Wed 3/18

4:03 pm-4:40 am

2 stops23h 37m

Incheon Intl

Wed 3/25

11:45 am-10:30 pm

2 stops23h 45m

$1,105

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Thu 4/30

7:16 pm-11:30 am

2 stops27h 14m

Incheon Intl

Mon 6/15

8:05 pm-6:25 am

2 stops23h 20m

$1,115

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Thu 4/30

7:20 pm-11:30 am

2 stops27h 10m

Incheon Intl

Mon 6/15

8:05 pm-7:32 am

2 stops24h 27m

$1,115

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Tue 4/21

7:11 pm-7:05 pm

2 stops34h 54m

Incheon Intl

Thu 4/30

12:45 pm-5:44 am

2 stops29h 59m

$1,116

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Tue 3/17

6:17 am-3:30 pm

1 stop20h 13m

Incheon Intl

Tue 4/7

7:20 pm-5:51 am

1 stop23h 31m

$1,123

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Tue 3/3

8:42 am-5:40 am

1 stop30h 58m

Incheon Intl

Wed 3/11

5:00 pm-7:19 am

1 stop27h 19m

$1,123

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Wed 4/29

12:40 pm-4:20 am

2 stops26h 40m

Incheon Intl

Thu 6/11

4:50 pm-7:10 am

1 stop27h 20m

$1,123

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Tue 3/3

6:05 am-4:30 pm

2 stops20h 25m

Incheon Intl

Tue 3/10

8:05 pm-5:51 am

2 stops22h 46m

$1,128

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Mon 3/2

4:09 pm-5:40 am

2 stops23h 31m

Incheon Intl

Mon 3/9

11:45 am-11:12 pm

2 stops24h 27m

$1,128

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Mon 2/16

6:30 am-5:40 am

2 stops33h 10m

Incheon Intl

Wed 4/8

4:50 pm-6:00 am

1 stop26h 10m

$1,128

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 60 results
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Best time to book a flight from Washington, D.C. to South Korea

Have a flexible travel schedule? Discover the best time to fly to South Korea from Washington, D.C. 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. to South Korea

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

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to South Korea (average of $372). Flying from Washington, D.C. to South Korea in July is currently the most expensive (average of $1,091). 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 WAS to KR?

Find hourly flight availability from Washington, D.C. 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 February 3, 2026.

It’s optimal to fly from Washington, D.C. to South Korea in the evening. By choosing this option you can save up to 50% on the cost of your flight, compared to a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to South Korea. Price data was last updated on March 30, 2025.

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

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

Explore weekly flight availability from Washington, D.C. 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 February 3, 2026.

The most flights from WAS 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 114 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 February 3, 2026.
Peruse reviews from past customers who have flown with Korean Air, Delta, and United Airlines from Washington, D.C. to South Korea to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,188 reviews

Entertainment

8.2

Crew

8.7

Overall

8.4

Food

8.1

Boarding

8.5

Comfort

8.3

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
1,188 reviews
Korean Air
8.4
Very good
1,188 reviews

Entertainment

8.2

Crew

8.7

Overall

8.4

Food

8.1

Boarding

8.5

Comfort

8.3

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
8,138 reviews
Korean Air
8.4
Very good
1,188 reviews

Entertainment

8.2

Crew

8.7

Overall

8.4

Food

8.1

Boarding

8.5

Comfort

8.3

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.
United Airlines
7.4
Good
9,236 reviews
Korean Air
8.4
Very good
1,188 reviews

Entertainment

8.2

Crew

8.7

Overall

8.4

Food

8.1

Boarding

8.5

Comfort

8.3

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.
American Airlines
7.2
Good
11,218 reviews
Korean Air
8.4
Very good
1,188 reviews

Entertainment

8.2

Crew

8.7

Overall

8.4

Food

8.1

Boarding

8.5

Comfort

8.3

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
10,684 reviews
Korean Air
8.4
Very good
1,188 reviews

Entertainment

8.2

Crew

8.7

Overall

8.4

Food

8.1

Boarding

8.5

Comfort

8.3

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 Washington, D.C. 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. to South Korea?

    United Airlines, Air Canada, and Cathay Pacific can get you from Washington, D.C. to South Korea in just under 21h 09m. Your travel time can differ by up to 20h 21m. The distance from Washington, D.C. to South Korea is about 6938 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    One-way options have recently been found by users for as low as $30 on Breeze Airways. Other airlines that offer cheap prices include United Airlines from $53 and Delta from $98 one-way.

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

    When deciding which route to take from Washington, D.C. to South Korea consider Washington, D.C. Dulles Intl - Incheon Intl, Washington, D.C. Reagan-National - Incheon Intl or Washington, D.C. Dulles Intl - Seoul Gimpo Intl as they are the most popular.

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

    Looking at all options, your cheapest flight can be booked for $514. While the most popular route (Washington, D.C. Dulles Intl - Incheon Intl) can be booked for $863 on average, our data indicates $2,533 when flying from Washington, D.C. to South Korea.

  • Can I find deals for flights from Washington, D.C. to South Korea that include hotel bookings?

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

  • How can I find direct flights from Washington, D.C. to South Korea?

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

  • Can I find deals for business class flights from Washington, D.C. to South Korea?

    Yes. Cheapflights offers flight deals from Washington, D.C. 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. to South Korea?

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to South Korea (average of $372). Flying from Washington, D.C. to South Korea in July is currently the most expensive (average of $1,091). 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

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Alternative routes for Washington, D.C. to South Korea

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Washington, D.C. to South Korea

Discover the top 9 airlines that operate flights from Washington, D.C. 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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$356Average$1,597FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$367Average$1,492FlexibilityNo cancel feeOn-time69%
Air ChinaCheapest$591Average$1,125FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$716Average$1,237FlexibilityNo cancel feeOn-time71%
Asiana AirlinesCheapest$759Average$2,072FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$791Average$1,026FlexibilityNo cancel feeOn-time77%
AIR PREMIACheapest$864Average$1,536FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$972Average$1,437FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$1,059Average$1,864FlexibilityNo cancel feeOn-time81%

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