A traditional Korean palace with a large, ornate building in the center, surrounded by a courtyard with stone pathways and red-roofed structures.

$665 Cheap Flights from Washington (DCA) to Seoul (ICN)

View $665 flight on Mon, Sep 7, 2026Opens in a new window

Popular airlines from Ronald Reagan Washington National Airport (DCA) to Incheon Intl. Airport (ICN)

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Cheap Flights from Washington to Seoul (DCA-ICN)

Prices were available within the past 7 days and start at $665 for one-way flights and $1,244 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, Sep 22 - Fri, Oct 2
DCA
Washington
ICN
Seoul
$1,244 Roundtrip, found 5 hours ago
$1,244
Roundtrip
found 5 hours ago
Select Alaska Airlines flight, departing Tue, Sep 22 from Washington to Seoul, returning Fri, Oct 2, priced at $1,244 found 5 hours ago
Alaska Airlines
Tue, Sep 22 - Fri, Oct 2
DCA
Washington
ICN
Seoul
$1,267 Roundtrip, found 5 hours ago
$1,267
Roundtrip
found 5 hours ago
Select Alaska Airlines flight, departing Tue, Sep 22 from Washington to Seoul, returning Fri, Oct 2, priced at $1,267 found 5 hours ago
Alaska Airlines
Thu, Oct 1 - Fri, Oct 9
DCA
Washington
ICN
Seoul
$1,277 Roundtrip, found 4 days ago
$1,277
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Thu, Oct 1 from Washington to Seoul, returning Fri, Oct 9, priced at $1,277 found 4 days ago
Alaska Airlines
Wed, Oct 21 - Mon, Oct 26
DCA
Washington
ICN
Seoul
$1,281 Roundtrip, found 1 day ago
$1,281
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Oct 21 from Washington to Seoul, returning Mon, Oct 26, priced at $1,281 found 1 day ago
Air Canada
Tue, Sep 29 - Mon, Nov 30
DCA
Washington
ICN
Seoul
$1,283 Roundtrip, found 2 days ago
$1,283
Roundtrip
found 2 days ago
Select Air Canada flight, departing Tue, Sep 29 from Washington to Seoul, returning Mon, Nov 30, priced at $1,283 found 2 days ago
Air Canada
Tue, Sep 15 - Wed, Sep 30
DCA
Washington
ICN
Seoul
$1,287 Roundtrip, found 12 hours ago
$1,287
Roundtrip
found 12 hours ago
Select Air Canada flight, departing Tue, Sep 15 from Washington to Seoul, returning Wed, Sep 30, priced at $1,287 found 12 hours ago
Air Canada
Tue, Sep 29 - Mon, Nov 30
DCA
Washington
ICN
Seoul
$1,288 Roundtrip, found 2 days ago
$1,288
Roundtrip
found 2 days ago
Select Air Canada flight, departing Tue, Sep 29 from Washington to Seoul, returning Mon, Nov 30, priced at $1,288 found 2 days ago
American Airlines
Wed, Oct 21 - Wed, Oct 28
DCA
Washington
ICN
Seoul
$1,326 Roundtrip, found 1 day ago
$1,326
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Oct 21 from Washington to Seoul, returning Wed, Oct 28, priced at $1,326 found 1 day ago
Delta
Wed, Oct 21 - Wed, Oct 28
DCA
Washington
ICN
Seoul
$1,326 Roundtrip, found 1 day ago
$1,326
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Oct 21 from Washington to Seoul, returning Wed, Oct 28, priced at $1,326 found 1 day ago
United
Wed, Sep 9 - Wed, Sep 23
DCA
Washington
ICN
Seoul
$1,326 Roundtrip, found 1 day ago
$1,326
Roundtrip
found 1 day ago
Select United flight, departing Wed, Sep 9 from Washington to Seoul, returning Wed, Sep 23, priced at $1,326 found 1 day ago

Alternative airports near Seoul

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Gimpo Intl. GMP. Cheapest and Closest option available. Average driving time to city center is 20 minutes. Flights from $2,052
GMP
Gimpo Intl.
CheapestClosest
Average driving time to city center20 min
Flights from $2,052

Find the cheapest month to fly from Washington (DCA) to Seoul (ICN)

March is typically the cheapest month to fly

From $974 - $1,680 per traveler.

What you need to know for your flight from Ronald Reagan Washington National to Incheon Intl.

Washington (DCA) to Seoul (ICN) at a glance

Embark on your journey from Washington, D.C. (DCA) to Seoul (ICN) with a selection of airlines offering diverse options on this international long-haul route. Whether you're looking for full-service carriers or budget-friendly choices, you can explore various itineraries that align with your travel plans and budget. Discover essential information about flights from Ronald Reagan Washington National Airport (DCA) to Incheon International Airport (ICN) as you prepare to experience the vibrant sights and neighborhoods of Seoul.

  • Fastest flight duration: around 17 hours in-flight, plus roughly 1h 45m layover with one stop
  • Route distance: roughly 7,000 miles (11,270 km)
  • Flights per week: around 8 departures on average
  • Typical fares (one-way): economy tickets often range from $460–$1225, depending on seasonality and how far ahead you book

Flights from Ronald Reagan Washington National Airport (DCA) to Incheon International Airport (ICN)

Based on the latest traveler bookings, here are the top airlines preferred for flights from Washington to Seoul, especially for one-stop and multi-stop journeys. Common layover spots include Pearson International Airport, YYZ (approximately 1 hour and 45 minutes), Pierre Elliott Trudeau International Airport, YUL (around 1 hour), and Dallas-Fort Worth International Airport, DFW (about 1 hour and 15 minutes). This variety allows you to balance price, total travel time, and cabin class for the most suitable itinerary.

  • Air Canada: This full-service airline provides convenient one-stop flights, with one-way ticket prices generally between $460 and $1240. It represents roughly 59% of the departures on this route, featuring a flight duration of 17 hours and a total travel time of about 18 hours and 45 minutes, including the layover.
  • American Airlines: As a comprehensive carrier, American Airlines offers one-stop services with one-way fares typically ranging from $470 to $1135. It accounts for around 14% of the flights on this route, with an in-flight duration of 17 hours and an overall journey time of approximately 18 hours and 45 minutes, including layover time.
  • Asiana Airlines: This full-service airline provides one-stop options, with one-way fares usually falling between $635 and $1125. Asiana Airlines represents about 14% of departures on this route, featuring a flight time of 17 hours and a total travel duration of roughly 18 hours and 45 minutes, including layovers.
  • Korean Air: Offering one-stop service, Korean Air is a full-service carrier with one-way fares typically ranging from $820 to $2870. It constitutes approximately 6% of the departures on this route, with an in-flight time of 17 hours and a total journey duration of around 18 hours and 45 minutes, including layover.
  • Delta: This full-service airline provides one-stop service with one-way fares generally between $805 and $1230. Delta accounts for about 3% of the departures on this route, offering a flight duration of 17 hours and a total travel time of approximately 18 hours and 45 minutes, factoring in the layover.

Best time to fly from Washington (DCA) to Seoul (ICN)

The most popular months for travelers flying from Washington to Seoul are May, June, and July, when peak temperatures in Seoul reach up to 77°F in July. If you prefer quieter travel, consider August, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 79°F. For better deals, January usually offers the lowest average one-way fare around $672. Flight availability peaks in January, August, and December, with approximately 9 flights per week, making it easier to find convenient departure times. July, September, and November have the fewest flights, with approximately 7 flights per week.

  • Cheapest time to fly: January usually offers good deals with average one-way fare around $672, roughly 21% cheaper than the yearly average.
  • More budget-friendly months to fly: August and March typically offer average one-way fares roughly ranging from $692 to $734.
  • Most flight options: January, August, and December have the highest number of flights from Washington to Seoul, with approximately 9 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January29.3°F (-1.5°C)Average9$672
February33.6°F (0.9°C)Average8$835
March43.0°F (6.1°C)Average8$734
April52.7°F (11.5°C)Average8$863
May62.4°F (16.9°C)High8$1041
June70.9°F (21.6°C)High8$916
July77.0°F (25.0°C)High7$864
August79.0°F (26.1°C)Low9$692
September72.1°F (22.3°C)Low7$829
October61.0°F (16.1°C)Average8$775
November48.0°F (8.9°C)Low7$1150
December33.4°F (0.8°C)Average9$923

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative route from Washington (DCA) to Seoul (ICN)

  • Washington to Seoul (IAD-ICN): Located approximately 23 miles from Ronald Reagan Washington National Airport (DCA), Washington Dulles International Airport (IAD) offers a variety of travel options. One-way economy ticket prices on this route generally fall between $505 and $1555, influenced by the season and how far in advance you book. Travelers can choose from non-stop or one-stop flights, with major airlines like Korean Air and Delta providing service. Additionally, business class is available for those seeking a premium experience.

How to find the best prices for flights from Washington (DCA) to Seoul (ICN)

Getting some of the best deals on flights from Washington to Seoul is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually found when booking at least two months in advance, which aligns with when most travelers make their reservations. Morning departures, between 5 a.m. and 12 p.m., not only tend to offer lower prices but are also the most popular flight times. Additionally, flying on Saturday provides both cheaper prices and ranks as the most favored travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Incheon International Airport from Ronald Reagan Washington National Airport

Seoul welcomes travelers from Washington with a range of transport options based on price, convenience, and proximity. For departures, Ronald Reagan Washington National Airport is roughly a 10-minute drive (covering about 5 miles) from central Washington. Here's how to reach Seoul efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Seoul, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Incheon International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Incheon International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Incheon International Airport, Incheon Int'l Airport Terminal 2 Station, a metro station, is located about 0.1 miles away on foot, while Yongyu Station, a train station, can be reached about 3.6 miles from the airport by car.

Frequently asked questions

How much does a flight from Washington, DC (DCA-Ronald Reagan Washington National) to Seoul (ICN-Incheon Intl.) cost?
You can find cheap one-way flights from $665 and cheap return flights from $1,244 Washington, DC (DCA-Ronald Reagan Washington National) to Seoul (ICN-Incheon Intl.) with Expedia. One-way flights typically cost between $810 and $6035, and return flights often range between $1729 and $8874. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Washington, DC (DCA-Ronald Reagan Washington National) to Seoul (ICN-Incheon Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Washington, DC (DCA-Ronald Reagan Washington National) to Seoul (ICN-Incheon Intl.)?
The cheapest month to fly from DCA to ICN is September when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Washington, DC (DCA-Ronald Reagan Washington National) to Seoul (ICN-Incheon Intl.)?
Enter DCA to ICN and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Washington, DC (DCA-Ronald Reagan Washington National) to Seoul (ICN-Incheon Intl.)?
KLM is one of the cheapest airlines offering connecting flights from Washington, DC (DCA) to Seoul (ICN), with round-trip tickets starting from around $2407 with a layover in John F. Kennedy Intl. (JFK). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Washington, DC (DCA-Ronald Reagan Washington National) to Seoul (ICN-Incheon Intl.)?
To find a cheap flight from Washington, DC (DCA-Ronald Reagan Washington National) to Seoul (ICN-Incheon Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Washington, DC (DCA-Ronald Reagan Washington National) to Seoul (ICN-Incheon Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Washington, DC (DCA-Ronald Reagan Washington National) to Seoul (ICN-Incheon Intl.)?
The earliest flight from Washington, DC (DCA) to Seoul (ICN) usually departs at around 5:00 AM, operated by American Airlines. This seasonal service is available in April and May, giving you an early start for your travels to South Korea. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Washington, DC (DCA-Ronald Reagan Washington National) to Seoul (ICN-Incheon Intl.)?
The most popular departure times for flights from Washington, DC (DCA) to Seoul (ICN) are in the early morning, from 6am to 9am. About 33% of passengers prefer this time window. Many major carriers, including Delta and Korean Air, offer flights during this window. This timing is favored because it allows travelers to maximize their time upon arrival in Seoul.
How long does it take to fly from Washington, DC (DCA-Ronald Reagan Washington National) to Seoul (ICN-Incheon Intl.)?
A flight from DCA to ICN with a layover takes around 21 hours 50 minutes, with the route covering approximately 6,958 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Washington, DC (DCA-Ronald Reagan Washington National) to Seoul (ICN-Incheon Intl.)?
Business class is available on flights from DCA to ICN. Airlines that offer business class service on this route include:

  • Delta Air Lines
  • Air Canada
  • United Airlines
  • American Airlines

First class is available with Delta Air Lines and American Airlines.
How do I earn miles on a Washington, DC (DCA-Ronald Reagan Washington National) to Seoul (ICN-Incheon Intl.) flight with Expedia?
It's easy to earn miles on a Washington, DC (DCA-Ronald Reagan Washington National) to Seoul (ICN-Incheon Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Seoul from Ronald Reagan Washington National (DCA)?
When traveling from Ronald Reagan Washington National (DCA) to Seoul, you can fly into Gimpo Intl. (GMP) and Incheon Intl. (ICN). Some flights may connect through major hubs like John F. Kennedy Intl. (JFK), O'Hare Intl. (ORD), Los Angeles Intl. (LAX) before reaching Seoul. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Washington, DC (DCA-Ronald Reagan Washington National) to Seoul (ICN-Incheon Intl.) at the last minute?
Typically, booking a last minute flight from Washington, DC (DCA-Ronald Reagan Washington National) to Seoul (ICN-Incheon Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Washington, DC (DCA-Ronald Reagan Washington National) to Seoul (ICN-Incheon Intl.) flight and hotel package?
Securing a Washington, DC (DCA-Ronald Reagan Washington National) to Seoul (ICN-Incheon Intl.) Incheon Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington, DC (DCA-Ronald Reagan Washington National) to Seoul (ICN-Incheon Intl.)?
If you booked your Washington, DC (DCA-Ronald Reagan Washington National) to Seoul (ICN-Incheon Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Ronald Reagan Washington National
Destination airport
Incheon Intl.
Airlines serving
Air Canada, Alaska Airlines, American Airlines, Delta, Korean Air, United
Roundtrip price
$1,244
Distance
6956 mi

Book with confidence

Washington to Seoul Flights

The cheapest times to fly from Washington to Seoul

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Seoul are during the month of September. You can find some of the cheapest flights from Washington to Seoul with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Seoul

Sunday is one of the best days to book for cheap flights from Washington to Seoul: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Seoul

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Seoul in 2026. You can also book with separate airlines for your outbound and return journeys, from $665 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Seoul flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Seoul airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Washington to Seoul Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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