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

Qatar Airways, Cathay Pacific, and Alaska Airlines can get you from Washington, D.C. to Seoul in just under 19h 35m. Your travel time can differ by up to 10h 21m. There are 6953 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 $588, was found to be the cheapest airline from Washington, D.C. to Seoul.Alternate airlines to your destination round-trip include United Airlines and AIR PREMIA. Delta is currently priced 57% 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 $450 on AIR PREMIA. Other airlines that offer cheap prices include Turkish Airlines from $488 and Korean Air from $725 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 $290. While the most popular route (Washington, D.C. Dulles Intl - Incheon Intl) can be booked for $783 on average, our data indicates $2,445 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 (75%), Delta (33%), Korean Air( 33%).

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.

$412+ Cheap Flights from Washington, D.C. to Seoul

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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

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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 January or November, booked 35 days in advance, depart on a Wednesday or Friday 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 November 12, 2026.

Mon 11/1611:35 pm -

Nonstop15h 50m

Wed 11/259:05 pm -

Nonstop13h 30m

Deal found 11/12

$844

Mon 11/2310:00 am -

1 stop39h 45m

Sat 12/512:10 am -

2 stops45h 50m

Deal found 11/11

$847

Sat 11/2110:00 am -

1 stop39h 45m

Sat 11/2812:10 am -

1 stop45h 50m

Deal found 11/11

$851

Mon 11/1610:00 am -

1 stop39h 45m

Thu 12/312:10 am -

2 stops45h 50m

Deal found 11/12

$864

Fri 11/2010:00 am -

1 stop39h 45m

Mon 12/712:10 am -

2 stops45h 50m

Deal found 11/11

$878

Thu 11/1910:00 am -

1 stop39h 45m

Wed 11/2512:10 am -

2 stops45h 50m

Deal found 11/12

$884

Tue 11/1710:00 am -

1 stop39h 45m

Wed 11/2512:10 am -

2 stops45h 50m

Deal found 11/12

$887

Mon 11/3011:35 pm -

Nonstop15h 50m

Fri 12/111:10 pm -

1 stop19h 20m

Deal found 11/10

$891

Thu 11/1910:00 am -

1 stop39h 45m

Sat 11/2812:10 am -

2 stops45h 50m

Deal found 11/8

$893

Fri 12/47:00 am -

2 stops31h 50m

Mon 12/141:20 pm -

2 stops41h 35m

Deal found 11/8

$987

Thu 11/129:40 am -

1 stop18h 45m

Wed 11/188:05 pm -

1 stop40h 33m

Deal found 11/10

$1,025

Mon 12/76:00 pm -

2 stops32h 20m

Mon 12/141:20 pm -

2 stops22h 39m

Deal found 11/9

$1,029

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 November 12, 2026.

Wed 2/38:05 pm -

1 stop24h 25m

Thu 3/43:00 pm -

2 stops38h 55m

Deal found 11/9

$1,190

Fri 2/195:54 pm -

2 stops29h 56m

Mon 6/218:00 am -

2 stops34h 31m

Deal found 11/9

$1,271

Wed 2/38:00 am -

1 stop19h 35m

Mon 3/18:00 pm -

2 stops35h 59m

Deal found 11/9

$1,351

Thu 2/48:45 pm -

1 stop19h 00m

Wed 3/35:40 pm -

1 stop17h 03m

Deal found 11/9

$1,388

Sun 1/317:43 pm -

1 stop29h 47m

Thu 3/47:25 pm -

1 stop17h 19m

Deal found 11/9

$1,392

Sun 12/67:00 am -

2 stops25h 05m

Sun 12/1312:05 pm -

2 stops31h 30m

Deal found 11/8

$1,535

Fri 11/2010:59 am -

1 stop39h 26m

Fri 12/46:00 pm -

1 stop18h 55m

Deal found 11/12

$1,565

Wed 12/26:00 am -

2 stops26h 05m

Sat 12/1212:05 pm -

2 stops31h 13m

Deal found 11/9

$1,610

Thu 1/2811:10 am -

1 stop34h 00m

Sun 2/147:50 pm -

1 stop27h 20m

Deal found 11/7

$1,832

Sat 3/138:05 pm -

2 stops56h 30m

Thu 3/2512:20 am -

1 stop29h 35m

Deal found 11/11

$1,218

Fri 2/56:00 am -

2 stops28h 40m

Fri 2/261:55 am -

2 stops35h 38m

Deal found 11/9

$1,321

Wed 3/2412:50 pm -

Nonstop15h 50m

Fri 4/210:25 am -

Nonstop13h 50m

Deal found 11/10

$1,425

Sun 2/77:43 pm -

1 stop29h 47m

Sun 2/145:40 pm -

1 stop20h 03m

Deal found 11/12

$1,438

Sat 2/66:59 pm -

2 stops32h 36m

Thu 3/48:00 pm -

1 stop34h 00m

Deal found 11/9

$1,451

Mon 11/306:00 am -

2 stops28h 40m

Wed 2/247:35 pm -

2 stops41h 58m

Deal found 11/8

$1,347

Tue 3/26:00 am -

1 stop19h 30m

Sat 3/1310:15 am -

Nonstop13h 35m

Deal found 11/10

$1,431

Wed 2/36:00 am -

1 stop19h 30m

Fri 2/55:40 pm -

1 stop18h 03m

Deal found 11/12

$1,438

Mon 11/166:00 am -

2 stops26h 05m

Fri 12/412:05 pm -

2 stops31h 29m

Deal found 11/12

$1,612

Sun 2/2811:50 am -

Nonstop15h 50m

Sat 3/1310:15 am -

Nonstop13h 35m

Deal found 11/10

$1,475

Sun 11/155:14 pm -

2 stops34h 56m

Mon 11/3012:20 am -

2 stops36h 32m

Deal found 11/8

$1,643

Fri 1/86:00 am -

2 stops26h 05m

Fri 1/228:15 am -

2 stops29h 41m

Deal found 11/9

$1,731

Mon 11/308:40 pm -

1 stop28h 50m

Fri 12/45:40 pm -

1 stop18h 03m

Deal found 11/10

$1,578

Sun 3/1412:50 pm -

Nonstop15h 50m

Fri 3/1910:15 am -

Nonstop13h 35m

Deal found 11/7

$1,476

Thu 1/76:00 am -

1 stop20h 50m

Sat 5/157:40 pm -

1 stop16h 49m

Deal found 11/11

$1,638

Sun 2/77:59 am -

1 stop20h 21m

Sun 2/149:10 am -

1 stop19h 02m

Deal found 11/10

$1,492

Mon 11/166:00 am -

2 stops26h 05m

Fri 11/208:15 am -

2 stops35h 15m

Deal found 11/7

$1,809

Fri 12/255:45 pm -

1 stop31h 45m

Mon 12/285:40 pm -

1 stop16h 58m

Deal found 11/10

$1,643

Thu 11/266:00 am -

1 stop22h 20m

Thu 12/1710:15 am -

Nonstop13h 35m

Deal found 11/8

$1,521

Mon 2/16:00 am -

2 stops26h 05m

Mon 2/812:05 pm -

2 stops25h 51m

Deal found 11/8

$1,851

Sat 1/1611:50 am -

Nonstop15h 50m

Tue 1/2610:15 am -

Nonstop13h 35m

Deal found 11/7

$1,551

Last-minute flights from Washington, D.C. to Seoul
Discover last-minute flight deals from Washington, D.C. to Seoul. Data last updated November 12, 2026 and is based on user searches.

Thu 11/129:40 am -

1 stop18h 45m

Wed 11/188:05 pm -

1 stop40h 33m

Deal found 11/10

$1,025

Mon 11/1611:35 pm -

Nonstop15h 50m

Wed 11/259:05 pm -

Nonstop13h 30m

Deal found 11/12

$844

Mon 11/1610:00 am -

1 stop39h 45m

Thu 12/312:10 am -

2 stops45h 50m

Deal found 11/12

$864

Tue 11/1710:00 am -

1 stop39h 45m

Wed 11/2512:10 am -

2 stops45h 50m

Deal found 11/12

$887

Thu 11/1910:00 am -

1 stop39h 45m

Wed 11/2512:10 am -

2 stops45h 50m

Deal found 11/12

$884

Thu 11/1910:00 am -

1 stop39h 45m

Sat 11/2812:10 am -

2 stops45h 50m

Deal found 11/8

$893

Fri 11/2010:00 am -

1 stop39h 45m

Mon 12/712:10 am -

2 stops45h 50m

Deal found 11/11

$878

Sat 11/2110:00 am -

1 stop39h 45m

Sat 11/2812:10 am -

1 stop45h 50m

Deal found 11/12

$851

Mon 11/2310:00 am -

1 stop39h 45m

Sat 12/512:10 am -

2 stops45h 50m

Deal found 11/11

$847

Mon 11/3011:35 pm -

Nonstop15h 50m

Fri 12/111:10 pm -

1 stop19h 20m

Deal found 11/10

$891

Fri 12/47:00 am -

2 stops31h 50m

Mon 12/141:20 pm -

2 stops41h 35m

Deal found 11/8

$987

Mon 12/76:00 pm -

2 stops32h 20m

Mon 12/141:20 pm -

2 stops22h 39m

Deal found 11/9

$1,029

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 November 12, 2026.

Sun 1/3111:35 pm -

Nonstop15h 50m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/7

$412

Wed 1/2711:35 pm -

Nonstop15h 50m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/11

$417

Fri 2/1911:35 pm -

Nonstop15h 50m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/9

$418

Sun 1/1711:35 pm -

Nonstop15h 50m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/12

$419

Wed 11/2511:35 pm -

Nonstop15h 50m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/12

$452

Tue 1/196:18 am -

2 stops32h 37m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/11

$461

Mon 3/16:37 am -

2 stops56h 18m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/10

$462

Tue 1/265:50 am -

3 stops49h 30m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/11

$475

Fri 2/510:57 pm -

3 stops51h 23m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/10

$478

Sat 1/305:50 am -

3 stops49h 30m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/11

$479

Fri 1/810:37 pm -

2 stops40h 18m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/10

$482

Tue 1/196:00 pm -

2 stops44h 50m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/12

$500

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

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$844 (AIR PREMIA)
One-way from	$412 (Kiwi.com)
Popular in	June
Cheapest in	January
Average price	$1,176
Good round-trip deal	$948 or less
Good one-way deal	$349 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. 12% potential increase in price ($201 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($27 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in November 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

Washington, D.C.Incheon

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

IADICN

Washington, D.C. Dulles Intl

Tue 11/24

6:00 am-1:50 pm

2 stops41h 50m

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 11/16

6:00 am-6:35 pm

2 stops46h 35m

Incheon Intl

Wed 12/31

12:00 am-10:00 am

Nonstop0h 00m

$581

Washington, D.C.Incheon

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

DCAICN

Washington, D.C. Reagan-National

Wed 1/6

1:30 pm-5:30 am

3 stops50h 00m

Incheon Intl

Wed 12/31

12:00 am-10:00 am

Nonstop0h 00m

$612

Washington, D.C.Incheon

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

IADICN

Washington, D.C. Dulles Intl

Mon 2/1

6:00 am-12:45 pm

2 stops40h 45m

Incheon Intl

Wed 12/31

12:00 am-10:00 am

Nonstop0h 00m

$619

Washington, D.C.Seoul

IAD Washington, D.C. Dulles Intl - GMP Seoul Gimpo Intl

IADGMP

Washington, D.C. Dulles Intl

Mon 11/16

11:55 pm-7:15 pm

1 stop29h 20m

Seoul Gimpo Intl

Wed 12/31

12:00 am-10:00 am

Nonstop0h 00m

$624

Washington, D.C.Incheon

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

IADICN

Washington, D.C. Dulles Intl

Tue 11/17

6:00 am-9:25 pm

2 stops49h 25m

Incheon Intl

Wed 12/31

12:00 am-10:00 am

Nonstop0h 00m

$625

Washington, D.C.Incheon

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

IADICN

Washington, D.C. Dulles Intl

Mon 11/16

6:00 am-12:45 pm

2 stops40h 45m

Incheon Intl

Wed 12/31

12:00 am-10:00 am

Nonstop0h 00m

$629

Washington, D.C.Incheon

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

IADICN

Washington, D.C. Dulles Intl

Sun 11/15

6:00 am-6:35 pm

2 stops46h 35m

Incheon Intl

Wed 12/31

12:00 am-10:00 am

Nonstop0h 00m

$685

Washington, D.C.Incheon

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

DCAICN

Washington, D.C. Reagan-National

Mon 11/16

7:45 pm-1:50 pm

2 stops28h 05m

Incheon Intl

Wed 12/31

12:00 am-10:00 am

Nonstop0h 00m

$731

Washington, D.C.Incheon

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

IADICN

Washington, D.C. Dulles Intl

Sat 1/2

1:30 pm-6:20 pm

1 stop38h 50m

Incheon Intl

Wed 12/31

12:00 am-10:00 am

Nonstop0h 00m

$746

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/9

Showing 1-10 of 58 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 November.

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
eDreams	Price Accuracy2 stars	Trust Score*3 stars
Ovago	Price Accuracy3 stars	Trust Score*3 stars
JustAirTicket	Price Accuracy-	Trust Score*1 star

*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

IAD-ICN

DCA-ICN

IAD-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

IAD-ICN

DCA-ICN

IAD-GMP

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Seoul (average of $1,201). Flying from Washington, D.C. to Seoul in December is currently the most expensive (average of $1,709). 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 Wednesday (3 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 $1,075 and $1,405 in December.
The cheapest round-trip price found within the last 5 days was $844 on AIR PREMIA (Dec 4-Dec 25).

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 14 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,Asiana Airlines, andAIR PREMIA 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

1,218 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

1,218 reviews

Korean Air

8.4

Very good

1,218 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Asiana Airlines

8.1

Very good

572 reviews

Korean Air

8.4

Very good

1,218 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

AIR PREMIA

8.0

Very good

115 reviews

Korean Air

8.4

Very good

1,218 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Delta

7.8

Good

8,722 reviews

Korean Air

8.4

Very good

1,218 reviews

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Air Canada

7.1

Good

11,894 reviews

Korean Air

8.4

Very good

1,218 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?
Qatar Airways, Cathay Pacific, and Alaska Airlines can get you from Washington, D.C. to Seoul in just under 19h 35m. Your travel time can differ by up to 10h 21m. There are 6953 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 $588, was found to be the cheapest airline from Washington, D.C. to Seoul.Alternate airlines to your destination round-trip include United Airlines and AIR PREMIA. Delta is currently priced 57% 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 $450 on AIR PREMIA. Other airlines that offer cheap prices include Turkish Airlines from $488 and Korean Air from $725 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 (75%), Delta (33%), Korean Air( 33%).
What are the cheapest flights from Washington, D.C. to Seoul?
Looking at all options, your cheapest flight can be booked for $290. While the most popular route (Washington, D.C. Dulles Intl - Incheon Intl) can be booked for $783 on average, our data indicates $2,445 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, January is the cheapest month in which you can book a flight from Washington, D.C. to Seoul (average of $1,201). Flying from Washington, D.C. to Seoul in December is currently the most expensive (average of $1,709). 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.

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Dulles Intl to Incheon Intl flights

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

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$588	Average$1,666	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$687	Average$1,480	FlexibilityNo cancel fee	On-time69%
AIR PREMIA	Cheapest$801	Average$1,256	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$816	Average$1,592	FlexibilityNo cancel fee	On-time71%
Turkish Airlines	Cheapest$929	Average$1,103	FlexibilityNo cancel fee	On-time77%
EVA Air	Cheapest$959	Average$1,087	FlexibilityNo cancel fee	On-time74%
Air Canada	Cheapest$1,079	Average$1,378	FlexibilityNo cancel fee	On-time67%
Korean Air	Cheapest$1,147	Average$1,679	FlexibilityNo cancel fee	On-time81%

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$412+ 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 1/31. Fares are subject to change and may not be available on all flights or dates of travel.

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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 November 12, 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 November 12, 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 November 12, 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 November 12, 2026.

Last-minute flights from Washington, D.C. to SeoulDiscover last-minute flight deals from Washington, D.C. to Seoul. Data last updated November 12, 2026 and is based on user searches.

Discover last-minute flight deals from Washington, D.C. to Seoul. Data last updated November 12, 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 November 12, 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 November 12, 2026.

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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 November.

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.

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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 November 12, 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 Wednesday (3 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 $1,075 and $1,405 in December.The cheapest round-trip price found within the last 5 days was $844 on AIR PREMIA (Dec 4-Dec 25).

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 14 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

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Reviews of airlines servicing Seoul

See what other customers who have flown with Korean Air,Asiana Airlines, andAIR PREMIA 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?

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Washington, D.C. and Seoul flights

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Other flights from Washington, D.C.

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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 November 12, 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 November 12, 2026.

Last-minute flights from Washington, D.C. to Seoul
Discover last-minute flight deals from Washington, D.C. to Seoul. Data last updated November 12, 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 November 12, 2026.

Washington, D.C. to Seoul flights typically cost between $1,075 and $1,405 in December.
The cheapest round-trip price found within the last 5 days was $844 on AIR PREMIA (Dec 4-Dec 25).