$429 Cheap Flights from Seoul (ICN) to Washington (DCA)

View $429 flight on Fri, Oct 10, 2025Opens in a new window

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

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Cheap Flights from Seoul to Washington (ICN-DCA)

Prices were available within the past 7 days and start at $429 for one-way flights and $584 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, Sep 11 - Mon, Sep 15
ICN
Seoul
DCA
Washington
$584 Roundtrip, found 5 days ago
$584
Roundtrip
found 5 days ago
Select American Airlines flight, departing Thu, Sep 11 from Seoul to Washington, returning Mon, Sep 15, priced at $584 found 5 days ago
Air Canada
Wed, Sep 17 - Thu, Sep 25
ICN
Seoul
DCA
Washington
$585 Roundtrip, found 1 hour ago
$585
Roundtrip
found 1 hour ago
Select Air Canada flight, departing Wed, Sep 17 from Seoul to Washington, returning Thu, Sep 25, priced at $585 found 1 hour ago
American Airlines
Tue, Sep 16 - Tue, Sep 30
ICN
Seoul
DCA
Washington
$587 Roundtrip, found 4 days ago
$587
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Sep 16 from Seoul to Washington, returning Tue, Sep 30, priced at $587 found 4 days ago
Air Canada
Fri, Sep 12 - Thu, Sep 25
ICN
Seoul
DCA
Washington
$592 Roundtrip, found 8 hours ago
$592
Roundtrip
found 8 hours ago
Select Air Canada flight, departing Fri, Sep 12 from Seoul to Washington, returning Thu, Sep 25, priced at $592 found 8 hours ago
American Airlines
Fri, Sep 12 - Tue, Sep 23
ICN
Seoul
DCA
Washington
$593 Roundtrip, found 3 days ago
$593
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Sep 12 from Seoul to Washington, returning Tue, Sep 23, priced at $593 found 3 days ago
American Airlines
Tue, Sep 16 - Tue, Sep 30
ICN
Seoul
DCA
Washington
$594 Roundtrip, found 4 days ago
$594
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Sep 16 from Seoul to Washington, returning Tue, Sep 30, priced at $594 found 4 days ago
Air Canada
Fri, Sep 12 - Tue, Sep 16
ICN
Seoul
DCA
Washington
$596 Roundtrip, found 6 days ago
$596
Roundtrip
found 6 days ago
Select Air Canada flight, departing Fri, Sep 12 from Seoul to Washington, returning Tue, Sep 16, priced at $596 found 6 days ago
Alaska Airlines
Thu, Oct 23 - Thu, Jan 29
ICN
Seoul
DCA
Washington
$606 Roundtrip, found 4 days ago
$606
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Thu, Oct 23 from Seoul to Washington, returning Thu, Jan 29, priced at $606 found 4 days ago
United
Wed, Nov 12 - Mon, Jan 19
ICN
Seoul
DCA
Washington
$612 Roundtrip, found 6 days ago
$612
Roundtrip
found 6 days ago
Select United flight, departing Wed, Nov 12 from Seoul to Washington, returning Mon, Jan 19, priced at $612 found 6 days ago
Hawaiian Airlines
Fri, Nov 14 - Fri, Jan 23
ICN
Seoul
DCA
Washington
$818 Roundtrip, found 6 days ago
$818
Roundtrip
found 6 days ago
Select Hawaiian Airlines flight, departing Fri, Nov 14 from Seoul to Washington, returning Fri, Jan 23, priced at $818 found 6 days ago

Alternative airports near Washington

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

Select flight to Baltimore Washington Intl. Thurgood Marshall BWI. Average driving time to city center is 40 minutes. Flights from $909
BWI
Baltimore Washington Intl. Thurgood Marshall
Average driving time to city center40 min
Flights from $909
Select flight to Washington Dulles Intl. IAD. Average driving time to city center is 36 minutes. Flights from $957
IAD
Washington Dulles Intl.
Average driving time to city center36 min
Flights from $957
Flights from Seoul (ICN) to Washington (DCA)
Origin airport
Incheon Intl.
Destination airport
Ronald Reagan Washington National
Airlines serving
Air Canada, Alaska Airlines, All Nippon Airways, American Airlines, Delta, Japan Airlines, Korean Air, United
Roundtrip price
$584
Distance
6956 mi

Seoul to Washington Flights

The cheapest times to fly from Seoul to Washington

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 Seoul to Washington are during the month of September. You can find some of the cheapest flights from Seoul to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seoul to Washington

Sunday is one of the best days to book for cheap flights from Seoul to Washington: 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 Seoul to Washington

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 Seoul to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $429 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 Seoul to Washington 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 Seoul to Washington 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 Incheon Intl. Airport (ICN) to Ronald Reagan Washington National Airport (DCA) cost?
Snag a cheap one-way flight from $429 or cheap return flight from $584 from Incheon Intl. Airport (ICN) to Ronald Reagan Washington National Airport (DCA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Incheon Intl. Airport (ICN) to Ronald Reagan Washington National Airport (DCA)?
Traveling in September is a great way to save, as it's the cheapest month for flights between ICN and DCA. You'll often find the lowest fares during the off-season.
What is the cheapest airline that flies from Incheon Intl. Airport (ICN) to Ronald Reagan Washington National Airport (DCA)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest ICN to DCA flight.
How many flights per day from Incheon Intl. Airport (ICN) to Ronald Reagan Washington National Airport (DCA)?
Nonstop flights from Incheon Intl. Airport (ICN) to Ronald Reagan Washington National Airport (DCA) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from ICN to DCA?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change depending on various factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Incheon Intl. Airport (ICN) to Ronald Reagan Washington National Airport (DCA)?
Book a flight from Incheon Intl. Airport (ICN) to Ronald Reagan Washington National Airport (DCA) that leaves before 3 PM to reduce the risk of cancellations. Departures later than this have a 22% higher chance of being canceled, on average.**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.
What airports do you fly into for Washington from Incheon Intl. Airport (ICN)?
Compare your flight options from Incheon Intl. Airport (ICN) to Washington Dulles Intl. Airport (IAD). This is the only Washington airport you can fly into if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Incheon Intl. Airport (ICN) to Ronald Reagan Washington National Airport (DCA) last-minute?
Last-minute bookings from ICN to DCA are typically more expensive. For the lowest prices, start looking for flights ahead of time. That said, if you're flexible with your travel plans, it's possible to land a cheap fare right before your trip.
Is it cheaper to book an ICN to DCA flight and hotel package?
You'll generally save money by securing an ICN to DCA flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. Once you've selected your ideal accommodations and flights, consider adding extras like activities, car rentals and tours.
Can I cancel or change the date of my flight from Incheon Intl. Airport (ICN) to Ronald Reagan Washington National Airport (DCA)?
In most cases, you can cancel or reschedule your ICN to DCA flight. However, there may be additional fees, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's guidelines and fees on flight changes, or if you need further information, head to our Customer Service portal.

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*Available to One Key members.