How long is the flight from Washington, D.C. to Seoul?

Cathay Pacific, Delta, and Korean Air can get you from Washington, D.C. to Seoul in just under 15h 25m. Your travel time can differ by up to 19h 09m. There are 6939 mi between Washington, D.C. and Seoul. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

Delta, at $392, was found to be the cheapest airline from Washington, D.C. to Seoul.Alternate airlines to your destination round-trip include Air Canada and United Airlines. Delta is currently priced 72% below the average price you’ll pay for this route.

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

One-way options have recently been found by users for as low as $474 on AIR PREMIA. Other airlines that offer cheap prices include Turkish Airlines from $488 and Air Canada from $738 one-way.

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.

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).

What are the most popular routes from Washington, D.C. to Seoul?

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

What are the cheapest flights from Washington, D.C. to Seoul?

Looking at all options, your cheapest flight can be booked for $474. While the most popular route (Washington, D.C. Dulles Intl - Incheon Intl) can be booked for $928 on average, our data indicates $2,539 when flying from Washington, D.C. to Seoul.

What are the most reliable airlines from Washington, D.C. to Seoul?

Before booking your flight to Seoul from Washington, D.C., check out the most reliable airlines to get you to your destination on time: AIR PREMIA (100%), Delta (60%), Korean Air( 60%).

What are the most popular airlines that fly from Washington, D.C. to Seoul?

Before booking your flight from Washington, D.C. to Seoul check out the most popular airlines for this route: AIR PREMIA, Korean Air or Delta.

Most accurate provider : When it comes to deals on Washington, D.C.-Seoul flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-Seoul flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Seoul flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Washington, D.C.-Seoul flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C.-Seoul flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

How can I find direct flights from Washington, D.C. to Seoul?

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 Seoul.

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

Yes. Cheapflights offers flight deals from Washington, D.C. 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.

$414+ Cheap Flights from Washington, D.C. to Seoul

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Washington, D.C. 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. to Seoul are usually found in November or October, booked 80 days in advance, depart on a Wednesday or Tuesday and return on a Friday

Cheap flight deals from Washington, D.C. to Seoul

Cheapest

Best

Last-minute

One-way

Cheapest flights from Washington, D.C. to Seoul
Explore the most affordable flight options available from Washington, D.C. to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.

Tue 11/1710:00 pm -

1 stop28h 35m

Tue 11/2411:10 am -

1 stop21h 20m

Deal found 9/8

$954

Wed 12/211:35 pm -

Nonstop15h 50m

Wed 12/169:05 pm -

Nonstop13h 30m

Deal found 9/7

$955

Mon 9/71:20 pm -

Nonstop15h 35m

Wed 9/2310:00 am -

Nonstop13h 50m

Deal found 9/6

$958

Tue 10/2711:00 pm -

1 stop28h 35m

Thu 11/129:55 pm -

1 stop34h 35m

Deal found 9/5

$959

Wed 9/161:20 pm -

Nonstop15h 35m

Wed 12/99:05 pm -

Nonstop13h 30m

Deal found 9/5

$963

Mon 10/191:20 pm -

Nonstop15h 35m

Fri 10/309:05 pm -

Nonstop13h 30m

Deal found 9/9

$971

Mon 10/121:20 pm -

Nonstop15h 35m

Wed 10/1410:00 am -

Nonstop13h 50m

Deal found 9/6

$972

Mon 9/211:20 pm -

Nonstop15h 35m

Mon 10/1210:00 am -

Nonstop13h 50m

Deal found 9/7

$975

Wed 9/91:20 pm -

Nonstop15h 35m

Fri 9/1110:00 am -

Nonstop13h 50m

Deal found 9/5

$976

Wed 9/91:20 pm -

Nonstop15h 35m

Wed 9/1610:00 am -

Nonstop13h 50m

Deal found 9/8

$978

Sun 10/41:20 pm -

Nonstop15h 35m

Sun 10/1110:00 am -

Nonstop13h 50m

Deal found 9/6

$982

Mon 10/121:15 am -

1 stop29h 00m

Tue 10/277:00 pm -

1 stop39h 55m

Deal found 9/8

$992

Best flights from Washington, D.C. to Seoul
Discover carefully curated flight deals from Washington, D.C. to Seoul that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.

Wed 9/304:56 pm -

2 stops42h 29m

Sat 10/178:05 pm -

2 stops46h 27m

Deal found 9/7

$1,181

Wed 10/71:06 pm -

2 stops34h 34m

Sun 10/188:05 pm -

2 stops36h 54m

Deal found 9/7

$1,220

Wed 9/161:15 pm -

Nonstop15h 25m

Thu 10/154:40 pm -

1 stop19h 09m

Deal found 9/5

$1,253

Sun 10/258:50 pm -

1 stop29h 40m

Mon 11/98:45 am -

1 stop20h 13m

Deal found 9/5

$1,262

Sun 10/256:00 am -

2 stops23h 20m

Mon 11/168:15 am -

2 stops21h 51m

Deal found 9/7

$1,498

Mon 10/268:23 am -

2 stops31h 17m

Mon 11/212:45 pm -

1 stop18h 41m

Deal found 9/6

$1,562

Sun 12/205:21 pm -

2 stops29h 04m

Wed 1/1311:00 pm -

2 stops37h 49m

Deal found 9/8

$1,928

Tue 9/2911:31 am -

2 stops42h 34m

Tue 10/208:05 pm -

2 stops36h 54m

Deal found 9/5

$1,220

Sun 10/258:50 pm -

1 stop29h 40m

Wed 11/117:25 pm -

1 stop18h 21m

Deal found 9/5

$1,262

Wed 10/286:00 am -

1 stop21h 40m

Fri 11/610:15 am -

Nonstop13h 35m

Deal found 9/9

$1,298

Mon 10/266:00 am -

2 stops41h 45m

Tue 11/33:00 pm -

2 stops28h 38m

Deal found 9/8

$1,221

Sun 10/258:50 pm -

1 stop29h 40m

Thu 11/129:10 am -

1 stop17h 30m

Deal found 9/5

$1,262

Mon 11/167:00 am -

1 stop18h 55m

Fri 11/2010:15 am -

Nonstop13h 35m

Deal found 9/7

$1,298

Thu 10/157:14 pm -

2 stops40h 11m

Wed 11/41:55 am -

2 stops36h 00m

Deal found 9/9

$1,226

Wed 12/910:11 am -

2 stops21h 54m

Sat 12/198:15 am -

2 stops22h 19m

Deal found 9/8

$1,515

Mon 10/126:00 am -

2 stops22h 55m

Fri 11/67:40 pm -

2 stops37h 55m

Deal found 9/9

$1,527

Mon 10/266:34 pm -

1 stop21h 06m

Tue 11/36:00 pm -

1 stop26h 48m

Deal found 9/7

$1,616

Sat 9/196:00 am -

1 stop19h 10m

Sun 9/2710:25 am -

Nonstop13h 40m

Deal found 9/8

$1,351

Tue 9/296:15 am -

1 stop22h 05m

Tue 10/206:50 pm -

1 stop19h 01m

Deal found 9/5

$1,362

Sun 2/288:27 am -

2 stops36h 18m

Mon 3/87:40 pm -

2 stops40h 19m

Deal found 9/5

$1,535

Mon 10/266:00 am -

2 stops27h 05m

Wed 11/1112:05 pm -

2 stops31h 39m

Deal found 9/5

$1,543

Thu 10/151:06 pm -

2 stops40h 59m

Wed 11/41:55 am -

2 stops30h 09m

Deal found 9/7

$1,288

Mon 10/268:23 am -

2 stops31h 17m

Wed 11/412:45 pm -

1 stop18h 41m

Deal found 9/8

$1,621

Sun 2/288:27 am -

2 stops36h 18m

Tue 3/912:05 pm -

2 stops23h 54m

Deal found 9/5

$1,535

Sat 9/197:15 pm -

2 stops26h 45m

Sun 9/277:45 pm -

3 stops29h 11m

Deal found 9/8

$1,549

Sat 9/1211:23 am -

2 stops36h 17m

Sun 9/203:10 pm -

2 stops43h 46m

Deal found 9/6

$1,323

Tue 9/291:15 pm -

Nonstop15h 25m

Tue 10/204:25 pm -

1 stop16h 49m

Deal found 9/5

$1,476

Thu 11/511:50 am -

Nonstop15h 50m

Sun 11/156:45 pm -

1 stop19h 35m

Deal found 9/5

$1,478

Sun 10/256:34 pm -

1 stop21h 06m

Mon 11/1612:45 pm -

1 stop18h 41m

Deal found 9/7

$1,666

Wed 10/288:00 am -

2 stops25h 05m

Tue 11/1012:05 pm -

2 stops23h 54m

Deal found 9/5

$1,535

Last-minute flights from Washington, D.C. to Seoul
Discover last-minute flight deals from Washington, D.C. to Seoul. Data last updated September 10, 2026 and is based on user searches.

Wed 9/91:20 pm -

Nonstop15h 35m

Fri 9/1110:00 am -

Nonstop13h 50m

Deal found 9/5

$976

Wed 9/91:20 pm -

Nonstop15h 35m

Wed 9/1610:00 am -

Nonstop13h 50m

Deal found 9/8

$978

Fri 9/111:20 pm -

Nonstop15h 35m

Wed 10/1410:00 am -

Nonstop13h 50m

Deal found 9/6

$990

Wed 9/161:20 pm -

Nonstop15h 35m

Wed 12/99:05 pm -

Nonstop13h 30m

Deal found 9/5

$963

Mon 9/211:20 pm -

Nonstop15h 35m

Mon 10/1210:00 am -

Nonstop13h 50m

Deal found 9/7

$975

Sun 10/41:20 pm -

Nonstop15h 35m

Sun 10/1110:00 am -

Nonstop13h 50m

Deal found 9/6

$982

Mon 10/121:20 pm -

Nonstop15h 35m

Wed 10/1410:00 am -

Nonstop13h 50m

Deal found 9/5

$972

Mon 10/121:15 am -

1 stop29h 00m

Tue 10/277:00 pm -

1 stop39h 55m

Deal found 9/8

$992

Mon 10/191:20 pm -

Nonstop15h 35m

Fri 10/309:05 pm -

Nonstop13h 30m

Deal found 9/9

$971

Mon 10/191:20 pm -

Nonstop15h 35m

Wed 11/189:05 pm -

Nonstop13h 30m

Deal found 9/5

$984

Tue 10/2711:00 pm -

1 stop28h 35m

Thu 11/129:55 pm -

1 stop34h 35m

Deal found 9/5

$959

Fri 10/3011:00 pm -

1 stop28h 35m

Fri 11/61:10 pm -

1 stop19h 20m

Deal found 9/7

$954

One-way flights from Washington, D.C. to Seoul
Search for one-way flight options from Washington, D.C. to Seoul. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.

Fri 9/1811:00 pm -

1 stop26h 20m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/7

$414

Fri 10/21:20 pm -

Nonstop15h 35m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/7

$479

Wed 9/301:20 pm -

Nonstop15h 35m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/9

$480

Fri 9/181:20 pm -

Nonstop15h 35m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/7

$483

Wed 9/231:20 pm -

Nonstop15h 35m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/8

$484

Wed 10/2812:35 am -

Nonstop15h 50m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/9

$487

Mon 11/211:35 pm -

Nonstop15h 50m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/8

$489

Mon 10/191:20 pm -

Nonstop15h 35m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/9

$491

Mon 10/2612:35 am -

Nonstop15h 50m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/8

$493

Wed 9/161:20 pm -

Nonstop15h 35m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/5

$502

Sat 10/2410:22 am -

2 stops45h 58m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/9

$505

Sat 10/246:00 pm -

2 stops38h 20m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/9

$505

Find flight deals from Washington, D.C. to Seoul

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$954 (Super.com)
One-way from	$414 (Kiwi.com)
Popular in	December
Cheapest in	November
Average price	$1,306
Good round-trip deal	$1,075 or less
Good one-way deal	$518 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 Seoul (SEL)

Search Deals

One-way flight from Washington, D.C. (WAS) to Seoul (SEL)

Search Deals

Highest demand for flights based on searches. 6% potential increase in price ($100 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($68 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Price to beat on a round-trip flight from Washington, D.C. (WAS) to Seoul (SEL).

Search Deals

Price to beat on a one-way flight from Washington, D.C. (WAS) to Seoul (SEL).

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to Seoul that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BaltimoreIncheon

BWI Baltimore/Washington - ICN Incheon Intl

BWIICN

Baltimore/Washington

Tue 9/29

7:40 am-3:20 pm

1 stop18h 40m

Incheon Intl

Wed 12/31

12:00 am-10:00 am

Nonstop0h 00m

$524

BaltimoreIncheon

BWI Baltimore/Washington - ICN Incheon Intl

BWIICN

Baltimore/Washington

Tue 9/29

7:26 am-3:45 pm

1 stop19h 19m

Incheon Intl

Wed 12/31

12:00 am-10:00 am

Nonstop0h 00m

$524

BaltimoreIncheon

BWI Baltimore/Washington - ICN Incheon Intl

BWIICN

Baltimore/Washington

Wed 9/16

7:50 am-10:25 pm

2 stops25h 35m

Incheon Intl

Wed 12/31

12:00 am-10:00 am

Nonstop0h 00m

$581

BaltimoreIncheon

BWI Baltimore/Washington - ICN Incheon Intl

BWIICN

Baltimore/Washington

Thu 10/1

11:23 am-10:25 pm

2 stops46h 02m

Incheon Intl

Wed 12/31

12:00 am-10:00 am

Nonstop0h 00m

$581

Washington, D.C.Incheon

IAD Washington, D.C. Dulles Intl - ICN Incheon Intl

IADICN

Washington, D.C. Dulles Intl

Tue 9/29

4:56 pm-12:25 am

2 stops42h 29m

Incheon Intl

Wed 12/31

12:00 am-10:00 am

Nonstop0h 00m

$581

Washington, D.C.Incheon

IAD Washington, D.C. Dulles Intl - ICN Incheon Intl

IADICN

Washington, D.C. Dulles Intl

Mon 10/19

1:15 am-6:45 pm

1 stop28h 30m

Incheon Intl

Wed 12/31

12:00 am-10:00 am

Nonstop0h 00m

$588

BaltimoreIncheon

BWI Baltimore/Washington - ICN Incheon Intl

BWIICN

Baltimore/Washington

Thu 11/12

5:42 pm-4:20 pm

2 stops32h 38m

Incheon Intl

Wed 12/31

12:00 am-10:00 am

Nonstop0h 00m

$592

Washington, D.C.Incheon

DCA Washington, D.C. Reagan-National - ICN Incheon Intl

DCAICN

Washington, D.C. Reagan-National

Tue 10/20

8:40 pm-4:05 pm

2 stops30h 25m

Incheon Intl

Wed 12/31

12:00 am-10:00 am

Nonstop0h 00m

$596

Washington, D.C.Incheon

DCA Washington, D.C. Reagan-National - ICN Incheon Intl

DCAICN

Washington, D.C. Reagan-National

Thu 10/1

11:31 am-12:40 pm

2 stops36h 09m

Incheon Intl

Wed 12/31

12:00 am-10:00 am

Nonstop0h 00m

$625

BaltimoreIncheon

BWI Baltimore/Washington - ICN Incheon Intl

BWIICN

Baltimore/Washington

Sat 10/3

10:22 am-4:25 am

3 stops53h 03m

Incheon Intl

Wed 12/31

12:00 am-10:00 am

Nonstop0h 00m

$632

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 60 resultsSorted by cheapest first

...

Compare providers for flights from Washington, D.C. to Seoul

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Washington, D.C. to Seoul in September.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
JustAirTicket	Price Accuracy-	Trust Score*1 star
Ovago	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy2 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Washington, D.C.-Seoul flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-Seoul flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Seoul flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Washington, D.C.-Seoul flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C.-Seoul flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Washington, D.C. to Seoul

Have a flexible travel schedule? Discover the best time to fly to Seoul from Washington, D.C. with our price prediction graph.

WAS-SEL

BWI-ICN

DCA-ICN

IAD-ICN

DCA-GMP

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 Seoul

WAS-SEL

BWI-ICN

DCA-ICN

IAD-ICN

DCA-GMP

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

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to Seoul (average of $1,247). Flying from Washington, D.C. to Seoul in December is currently the most expensive (average of $2,018). 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 SEL?

When flying from Washington, D.C. to Seoul, 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. to Seoul

The most flights from WAS 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).

How much does it cost to fly round-trip from Washington, D.C. to Seoul?

Airfare is below average for this route at the moment.

Washington, D.C. to Seoul flights typically cost between $1,173 and $1,529 in November.
The cheapest round-trip price found within the last 5 days was $954 on Air China (Nov 17-Nov 24).

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

To ensure you get the cheapest price possible for a flight from Washington, D.C. to Seoul, you should look to book at least 40 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. to Seoul trip

Our travel experts

Gabriel Leigh

Expert on ICN

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.

Ramsey Qubein

Expert on IAD

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.

See what other customers who have flown with Korean Air,AIR PREMIA, andDelta from Washington, D.C. to Seoul have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Korean Air

8.4

Very good

1,221 reviews

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

1,221 reviews

Korean Air

8.4

Very good

1,221 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

AIR PREMIA

8.1

Very good

106 reviews

Korean Air

8.4

Very good

1,221 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Delta

7.8

Good

8,554 reviews

Korean Air

8.4

Very good

1,221 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

United Airlines

7.4

Good

10,194 reviews

Korean Air

8.4

Very good

1,221 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Air Canada

7.1

Good

11,608 reviews

Korean Air

8.4

Very good

1,221 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Related info for your journey

How long is the flight from Washington, D.C. to Seoul?
Cathay Pacific, Delta, and Korean Air can get you from Washington, D.C. to Seoul in just under 15h 25m. Your travel time can differ by up to 19h 09m. There are 6939 mi between Washington, D.C. and Seoul. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines flying from Washington, D.C. to Seoul round-trip?
Delta, at $392, was found to be the cheapest airline from Washington, D.C. to Seoul.Alternate airlines to your destination round-trip include Air Canada and United Airlines. Delta is currently priced 72% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from Washington, D.C. to Seoul one-way?
One-way options have recently been found by users for as low as $474 on AIR PREMIA. Other airlines that offer cheap prices include Turkish Airlines from $488 and Air Canada from $738 one-way.
What are the most popular routes from Washington, D.C. to Seoul?
When deciding which route to take from Washington, D.C. to Seoul consider Washington, D.C. Dulles Intl - Incheon Intl, Washington, D.C. Reagan-National - Incheon Intl or Baltimore/Washington - Incheon Intl as they are the most popular.
What are the most reliable airlines from Washington, D.C. to Seoul?
Before booking your flight to Seoul from Washington, D.C., check out the most reliable airlines to get you to your destination on time: AIR PREMIA (100%), Delta (60%), Korean Air( 60%).
What are the cheapest flights from Washington, D.C. to Seoul?
Looking at all options, your cheapest flight can be booked for $474. While the most popular route (Washington, D.C. Dulles Intl - Incheon Intl) can be booked for $928 on average, our data indicates $2,539 when flying from Washington, D.C. to Seoul.
Can I find deals for flights from Washington, D.C. to Seoul that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Seoul flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to Seoul?
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 Seoul.
Can I find deals for business class flights from Washington, D.C. to Seoul?
Yes. Cheapflights offers flight deals from Washington, D.C. 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. to Seoul?
Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to Seoul (average of $1,247). Flying from Washington, D.C. to Seoul in December is currently the most expensive (average of $2,018). 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

Alternative routes

Complete your trip

Flights by cabin class

Other flight options

Other flights from Washington, D.C.

Popular flights

Seoul flight routes

Top destinations

Alternative routes for Washington, D.C. to Seoul

Dulles Intl to Incheon Intl flights

Reagan-National to Incheon Intl flights

Top 8 airlines flying from Washington, D.C. to Seoul

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$392	Average$1,587	FlexibilityNo cancel fee	On-timeN/A
Air Canada	Cheapest$685	Average$1,378	FlexibilityNo cancel fee	On-time67%
United Airlines	Cheapest$687	Average$1,496	FlexibilityNo cancel fee	On-time69%
AIR PREMIA	Cheapest$797	Average$1,275	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$816	Average$1,306	FlexibilityNo cancel fee	On-time71%
Turkish Airlines	Cheapest$929	Average$1,109	FlexibilityNo cancel fee	On-time77%
EVA Air	Cheapest$959	Average$1,096	FlexibilityNo cancel fee	On-time74%
Korean Air	Cheapest$1,313	Average$1,645	FlexibilityNo cancel fee	On-time81%

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.

$414+ Cheap flights from Washington, D.C. (WAS) to Seoul (SEL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/18. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Washington, D.C. to Seoul with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Washington, D.C. to Seoul

Cheapest flights from Washington, D.C. to SeoulExplore the most affordable flight options available from Washington, D.C. to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.

Explore the most affordable flight options available from Washington, D.C. to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.

Best flights from Washington, D.C. to SeoulDiscover carefully curated flight deals from Washington, D.C. to Seoul that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.

Discover carefully curated flight deals from Washington, D.C. to Seoul that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.

Last-minute flights from Washington, D.C. to SeoulDiscover last-minute flight deals from Washington, D.C. to Seoul. Data last updated September 10, 2026 and is based on user searches.

Discover last-minute flight deals from Washington, D.C. to Seoul. Data last updated September 10, 2026 and is based on user searches.

One-way flights from Washington, D.C. to SeoulSearch for one-way flight options from Washington, D.C. to Seoul. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.

Search for one-way flight options from Washington, D.C. to Seoul. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.

Find flight deals from Washington, D.C. to Seoul

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to Seoul that are best for you.

Compare providers for flights from Washington, D.C. to Seoul

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Washington, D.C. to Seoul in September.

Best time to book a flight from Washington, D.C. to Seoul

Have a flexible travel schedule? Discover the best time to fly to Seoul from Washington, D.C. with our price prediction graph.

Cheapflights Insights

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

What is the cheapest time of day to fly from WAS to SEL?

Find hourly flight availability from Washington, D.C. 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 September 10, 2026.

When flying from Washington, D.C. to Seoul, 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. to Seoul

The most flights from WAS 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).

How much does it cost to fly round-trip from Washington, D.C. to Seoul?

Airfare is below average for this route at the moment.

Washington, D.C. to Seoul flights typically cost between $1,173 and $1,529 in November.The cheapest round-trip price found within the last 5 days was $954 on Air China (Nov 17-Nov 24).

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

To ensure you get the cheapest price possible for a flight from Washington, D.C. to Seoul, you should look to book at least 40 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

AI-powered summary based on content written by travel experts. AI can make mistakes.

Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. to Seoul trip

Our travel experts

Reviews of airlines servicing Seoul

See what other customers who have flown with Korean Air,AIR PREMIA, andDelta from Washington, D.C. to Seoul have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How long is the flight from Washington, D.C. to Seoul?

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

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

What are the most popular routes from Washington, D.C. to Seoul?

What are the most reliable airlines from Washington, D.C. to Seoul?

What are the cheapest flights from Washington, D.C. to Seoul?

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

How can I find direct flights from Washington, D.C. to Seoul?

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

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

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.

Alternative routes for Washington, D.C. to Seoul

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

Complete your trip

Complete your trip to Seoul by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Washington, D.C. to Seoul by cabin class

Find flights from Washington, D.C. to Seoul, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Washington, D.C. and Seoul flights

Browse other Washington, D.C. and Seoul flight options. Last updated on September 10, 2026.

Other flights from Washington, D.C.

Browse through other flights departing from Washington, D.C.. Flights are based on user searches made on Cheapflights and were last updated on September 10, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Other flights to Seoul

Explore flights to Seoul departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 10, 2026.

Washington, D.C. to Seoul flights

Consider these flights traveling from Washington, D.C. to Seoul.

Top 8 airlines flying from Washington, D.C. to Seoul

Cheapest flights from Washington, D.C. to Seoul
Explore the most affordable flight options available from Washington, D.C. to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.

Best flights from Washington, D.C. to Seoul
Discover carefully curated flight deals from Washington, D.C. to Seoul that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.

Last-minute flights from Washington, D.C. to Seoul
Discover last-minute flight deals from Washington, D.C. to Seoul. Data last updated September 10, 2026 and is based on user searches.

One-way flights from Washington, D.C. to Seoul
Search for one-way flight options from Washington, D.C. to Seoul. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.

Washington, D.C. to Seoul flights typically cost between $1,173 and $1,529 in November.
The cheapest round-trip price found within the last 5 days was $954 on Air China (Nov 17-Nov 24).