$502 Cheap Flights from Seoul (ICN) to Washington (IAD)

View $502 flight on Thu, May 21, 2026Opens in a new window

Popular airlines from Incheon Intl. Airport (ICN) to Washington Dulles Intl. Airport (IAD)

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Cheap Flights from Seoul to Washington (ICN-IAD)

Prices were available within the past 7 days and start at $502 for one-way flights and $467 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Wed, Nov 19 - Tue, Nov 25
ICN
Seoul
IAD
Washington
$467 Roundtrip, found 3 days ago
$467
Roundtrip
found 3 days ago
Select Air Canada flight, departing Wed, Nov 19 from Seoul to Washington, returning Tue, Nov 25, priced at $467 found 3 days ago
Alaska Airlines
Wed, Apr 29 - Thu, Apr 30
ICN
Seoul
IAD
Washington
$476 Roundtrip, found 5 days ago
$476
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Wed, Apr 29 from Seoul to Washington, returning Thu, Apr 30, priced at $476 found 5 days ago
Hawaiian Airlines
Sun, Feb 22 - Wed, Mar 11
ICN
Seoul
IAD
Washington
$483 Roundtrip, found 22 hours ago
$483
Roundtrip
found 22 hours ago
Select Hawaiian Airlines flight, departing Sun, Feb 22 from Seoul to Washington, returning Wed, Mar 11, priced at $483 found 22 hours ago
American Airlines
Thu, Nov 13 - Tue, Dec 2
ICN
Seoul
IAD
Washington
$485 Roundtrip, found 6 days ago
$485
Roundtrip
found 6 days ago
Select American Airlines flight, departing Thu, Nov 13 from Seoul to Washington, returning Tue, Dec 2, priced at $485 found 6 days ago
United
Thu, Nov 13 - Tue, Dec 2
ICN
Seoul
IAD
Washington
$499 Roundtrip, found 6 days ago
$499
Roundtrip
found 6 days ago
Select United flight, departing Thu, Nov 13 from Seoul to Washington, returning Tue, Dec 2, priced at $499 found 6 days ago
Asiana Airlines
Wed, Apr 22 - Thu, Apr 23
ICN
Seoul
IAD
Washington
$1,048 Roundtrip, found 2 days ago
$1,048
Roundtrip
found 2 days ago
Select Asiana Airlines flight, departing Wed, Apr 22 from Seoul to Washington, returning Thu, Apr 23, priced at $1,048 found 2 days ago
Air China
Tue, Jan 20 - Tue, Mar 10
ICN
Seoul
IAD
Washington
$1,167 Roundtrip, found 9 hours ago
$1,167
Roundtrip
found 9 hours ago
Select Air China flight, departing Tue, Jan 20 from Seoul to Washington, returning Tue, Mar 10, priced at $1,167 found 9 hours ago
WestJet
Thu, Jun 11 - Wed, Jun 17
ICN
Seoul
IAD
Washington
$1,186 Roundtrip, found 5 days ago
$1,186
Roundtrip
found 5 days ago
Select WestJet flight, departing Thu, Jun 11 from Seoul to Washington, returning Wed, Jun 17, priced at $1,186 found 5 days ago
Delta
Thu, Nov 13 - Tue, Dec 2
ICN
Seoul
IAD
Washington
$1,287 Roundtrip, found 6 days ago
$1,287
Roundtrip
found 6 days ago
Select Delta flight, departing Thu, Nov 13 from Seoul to Washington, returning Tue, Dec 2, priced at $1,287 found 6 days ago
Korean Air
Fri, May 8 - Sun, May 10
ICN
Seoul
IAD
Washington
$1,308 Roundtrip, found 3 days ago
$1,308
Roundtrip
found 3 days ago
Select Korean Air flight, departing Fri, May 8 from Seoul to Washington, returning Sun, May 10, priced at $1,308 found 3 days ago

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

September is typically the cheapest month to fly

From $430 - $1,013 per traveler.

Alternative airports near Washington

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

Select flight to Ronald Reagan Washington National DCA. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $995
DCA
Ronald Reagan Washington National
CheapestClosest
Average driving time to city center8 min
Flights from $995

Frequently asked questions

How much does a flight from Incheon Intl. Airport (ICN) to Washington Dulles Intl. Airport (IAD) cost?
Secure a cheap one-way flight from $502 or cheap return flight from $467 from Incheon Intl. Airport (ICN) to Washington Dulles Intl. Airport (IAD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Incheon Intl. Airport (ICN) to Washington Dulles Intl. Airport (IAD)?
November is the least expensive month to fly from ICN to IAD. Traveling during an off-peak travel window is often the key to better flight prices.
Which airlines fly direct from Incheon Intl. Airport (ICN) to Washington Dulles Intl. Airport (IAD)?
You can fly directly from Incheon Intl. Airport (ICN) to Washington Dulles Intl. Airport (IAD) on a Korean Air flight.
What is the cheapest airline that flies from Incheon Intl. Airport (ICN) to Washington Dulles Intl. Airport (IAD)?
To find the cheapest airline flying from ICN to IAD, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Incheon Intl. Airport (ICN) to Washington Dulles Intl. Airport (IAD)?
On average, there is just 1 direct flight leaving from Incheon Intl. Airport (ICN) to Washington Dulles Intl. Airport (IAD) per day. If this doesn't suit your schedule, think about flights with layovers. Just customize your search on Expedia to include one stop or more to discover the next best option.
What are the most popular departure times for flights from Incheon Intl. Airport (ICN) to Washington Dulles Intl. Airport (IAD)?
More people fly between ICN and IAD at 10 AM than at any other point in the day. Looking for a quieter experience? Travel outside of rush hours and there's a chance you'll save on your ticket as well.
What day of the week has the most flights from ICN to IAD?
Sunday has the most flights from Incheon Intl. Airport (ICN) to Washington Dulles Intl. Airport (IAD). Consider traveling on this day and you'll have the best chance of finding a schedule that works for you.
What is the earliest flight from Incheon Intl. Airport (ICN) to Washington Dulles Intl. Airport (IAD)?
Catch the earliest flight at around 10:15AM UTC+9, departing from Incheon Intl. Airport (ICN). You'll be flying for roughly 13h 35m, landing at Washington Dulles Intl. Airport (IAD) at approximately 9:50AM UTC-5.
How long does it take to fly from Incheon Intl. Airport (ICN) to Washington Dulles Intl. Airport (IAD)?
The average flight time from ICN to IAD is 13 hours and 35 minutes, covering a distance of 7,000 mi.
What airline has the least delays from ICN to IAD?
Korean Air has the best performance for on-time direct flights from Incheon Intl. Airport (ICN) to Washington Dulles Intl. Airport (IAD), with an on-time score of 82%. Use the Expedia App to check your flight status before you take off and receive notifications about any changes.
What is the best time to fly from Incheon Intl. Airport (ICN) to Washington Dulles Intl. Airport (IAD)?
To reach Washington Dulles Intl. Airport (IAD) on time, opt for a flight that takes off from Incheon Intl. Airport (ICN) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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)?
Explore your flight options from Incheon Intl. Airport (ICN) to Washington Dulles Intl. Airport (IAD). This is the only airport in Washington you can land at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Incheon Intl. Airport (ICN) to Washington Dulles Intl. Airport (IAD) last-minute?
Booking your plane ticket from ICN to IAD right before your getaway is generally more expensive. However, if there's some wiggle room with your travel dates and times, you could land a cheap last-minute fare.
Is it cheaper to book an ICN to IAD flight and hotel package?
Compared with arranging hotels and flights separately, booking an ICN to IAD flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one easy place takes the hassle out of travel planning. Simply secure your flights and choose from our extensive range of hotels, then personalize your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Incheon Intl. Airport (ICN) to Washington Dulles Intl. Airport (IAD)?
In most instances, you can reschedule or cancel your ICN to IAD flight. However, there may be additional charges, especially if you booked more than 24 hours ago. Check your itinerary for the airline's guidelines and fees on flight changes, or if you want further information, visit our Customer Service portal.

Travel information

Origin airport
Incheon Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
Air Canada, Air China, Air France, Alaska Airlines, All Nippon Airways, American Airlines, Asiana Airlines, China Airlines, Delta, Emirates, Ethiopian Airlines, Etihad Airways, Hawaiian Airlines, Japan Airlines, KLM, Korean Air, Lufthansa, Qatar Airways, Turkish Airlines, United
Roundtrip price
$467
Distance
6942 mi
Average flight time
13 hours 35 mins

Book with confidence

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 November. 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 $502 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.

 

Seoul to Washington Flights

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*Available to One Key members.