$614 Cheap Flights from Washington (DCA) to Seoul (ICN)

View $614 flight on Tue, Sep 9, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Washington to Seoul (DCA-ICN)

Prices were available within the past 7 days and start at $614 for one-way flights and $1,179 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Mon, Sep 15 - Wed, Sep 24
DCA
Washington
ICN
Seoul
$1,179 Roundtrip, found 3 days ago
$1,179
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Mon, Sep 15 from Washington to Seoul, returning Wed, Sep 24, priced at $1,179 found 3 days ago
Alaska Airlines
Mon, May 12 - Tue, May 27
DCA
Washington
ICN
Seoul
$1,186 Roundtrip, found 6 days ago
$1,186
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Mon, May 12 from Washington to Seoul, returning Tue, May 27, priced at $1,186 found 6 days ago
Alaska Airlines
Thu, Aug 14 - Mon, Aug 25
DCA
Washington
ICN
Seoul
$1,194 Roundtrip, found 2 hours ago
$1,194
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Thu, Aug 14 from Washington to Seoul, returning Mon, Aug 25, priced at $1,194 found 2 hours ago
Air Canada
Mon, Dec 29 - Mon, Jan 12
DCA
Washington
ICN
Seoul
$1,200 Roundtrip, found 8 hours ago
$1,200
Roundtrip
found 8 hours ago
Select Air Canada flight, departing Mon, Dec 29 from Washington to Seoul, returning Mon, Jan 12, priced at $1,200 found 8 hours ago
Air Canada
Mon, Aug 11 - Wed, Sep 10
DCA
Washington
ICN
Seoul
$1,205 Roundtrip, found 4 hours ago
$1,205
Roundtrip
found 4 hours ago
Select Air Canada flight, departing Mon, Aug 11 from Washington to Seoul, returning Wed, Sep 10, priced at $1,205 found 4 hours ago
Alaska Airlines
Mon, Sep 1 - Fri, Sep 5
DCA
Washington
ICN
Seoul
$1,208 Roundtrip, found 4 hours ago
$1,208
Roundtrip
found 4 hours ago
Select Alaska Airlines flight, departing Mon, Sep 1 from Washington to Seoul, returning Fri, Sep 5, priced at $1,208 found 4 hours ago
Air Canada
Mon, Aug 11 - Wed, Sep 10
DCA
Washington
ICN
Seoul
$1,211 Roundtrip, found 4 hours ago
$1,211
Roundtrip
found 4 hours ago
Select Air Canada flight, departing Mon, Aug 11 from Washington to Seoul, returning Wed, Sep 10, priced at $1,211 found 4 hours ago
JetBlue Airways
Mon, Aug 18 - Mon, Sep 1
DCA
Washington
ICN
Seoul
$1,212 Roundtrip, found 2 days ago
$1,212
Roundtrip
found 2 days ago
Select JetBlue Airways flight, departing Mon, Aug 18 from Washington to Seoul, returning Mon, Sep 1, priced at $1,212 found 2 days ago
American Airlines
Sun, Feb 1 - Sun, Mar 1
DCA
Washington
ICN
Seoul
$1,463 Roundtrip, found 5 days ago
$1,463
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sun, Feb 1 from Washington to Seoul, returning Sun, Mar 1, priced at $1,463 found 5 days ago
Delta
Tue, Aug 26 - Thu, Oct 16
DCA
Washington
ICN
Seoul
$1,796 Roundtrip, just found
$1,796
Roundtrip
just found
Select Delta flight, departing Tue, Aug 26 from Washington to Seoul, returning Thu, Oct 16, priced at $1,796 just found
Flights from Washington (DCA) to Seoul (ICN)
Origin airport
Ronald Reagan Washington National
Destination airport
Incheon Intl.
Airlines serving
Air Canada, Alaska Airlines, American Airlines, Delta, Finnair, Japan Airlines, Korean Air, United
Roundtrip price
$1,178
Distance
6956 mi

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 2025. You can also book with separate airlines for your outbound and return journeys, from $614 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.

Frequently asked questions

How much does a flight from Ronald Reagan Washington National Airport (DCA) to Incheon Intl. Airport (ICN) cost?
Discover the latest flight deals from DCA to ICN by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from DCA to ICN?
The cheapest flights from DCA to ICN are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Ronald Reagan Washington National Airport (DCA) to Incheon Intl. Airport (ICN)?
There are no direct flights from Washington, DC (DCA-Ronald Reagan Washington National) to Incheon Intl. Airport (ICN). However, you’ll find other airports that have nonstop flights. Begin your journey at Washington Dulles Intl. Airport (IAD) and head straight to Seoul without layovers.
What is the cheapest airline that flies from DCA to ICN?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from DCA to ICN. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Ronald Reagan Washington National Airport (DCA) to Incheon Intl. Airport (ICN)?
Direct flights from Ronald Reagan Washington National Airport (DCA) to Incheon Intl. Airport (ICN) aren’t available daily, so you’ll need to take a flight with a layover. Explore your options with our filter tool. Enter your dates and select either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from DCA to ICN?
You’ll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Ronald Reagan Washington National Airport (DCA) to Incheon Intl. Airport (ICN)?
To reach Incheon Intl. Airport (ICN) without delays, book a flight that leaves from Ronald Reagan Washington National Airport (DCA) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from Ronald Reagan Washington National Airport (DCA) to Incheon Intl. Airport (ICN) last-minute?
Last-minute bookings from DCA to ICN are generally more expensive. For the lowest rates, start searching for flights as soon as possible. That said, if you’re flexible with your travel plans, you may find a cheap fare right before your journey.
Is it cheaper to book a DCA to ICN flight and hotel package?
Compared with arranging hotels and flights separately, booking a DCA to ICN flight and hotel package with Expedia could lead to significant savings. Better yet, having it all in one place will take the stress out of travel planning. Simply pick your flights and choose from our extensive range of hotels, then personalize your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Ronald Reagan Washington National Airport (DCA) to Incheon Intl. Airport (ICN)?
It’s generally possible to reschedule or cancel your DCA to ICN flight. However, if it’s been more than 24 hours since booking, additional fees may apply. Refer to your airline’s policies in your itinerary to see what changes are possible and whether any costs are involved. You’ll also find more information on our Customer Service portal.

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*Available to One Key members.