$1,073 Cheap United flights Seoul (ICN) to Washington (IAD)

You can discover affordable round-trip United Airlines flights from $1,213 from ICN to IAD by filtering your results from “Price (lowest to highest)” on Expedia. Or look for options from $1,073 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

January is one of the least expensive months to jet away to Washington with United Airlines. You could also find fantastic deals on one-way and return fares in February.

Snagging the best United Airlines deals from ICN to IAD is typically all about timing. You can save 17% on international flights when you book 18 to 29 days before takeoff instead of four to five months ahead. As an added bonus, you can pocket 17% on average by buying your fare on a Sunday compared to a Friday, which is usually the most expensive day to book.* It’s a good idea to start checking out flights about one month before your departure date.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Click on the “Nonstop” filter when browsing for direct United Airlines flights from ICN to IAD. You can also compare other carriers offering the same direct trip.

Browse United Airlines’s earliest flights from ICN to IAD by selecting our “Morning” and “Early Morning” filters. Not only will you get to where you’re going sooner, early departures also experience 20% fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Get on a United Airlines flight from Incheon Intl. Airport (ICN) to Washington, and you’re most likely to arrive at Washington Dulles Intl. Airport (IAD). This is the airline’s primary hub in this city.

A rewarding loyalty program and the ability to collect points through United Mileage Plus are the start of the reasons to fly from ICN to IAD with United Airlines. Plus, when you join Expedia’s free One Key™ program, you can receive OneKeyCash™* in addition to United Airlines’s loyalty program earnings. It’s yours to spend on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

It’s usually possible to reschedule or cancel your flight, although additional charges may apply if your booking was made over 24 hours ago. Prefer to keep your options open? Make use of Expedia’s “Changes included” and “No cancel fee” filters to find flights that won’t charge extra if you need to revise your plans. To make changes, head to “Trips,” select your flight and click on “Manage Booking” for more details.