Cheap flights from District of Columbia to Seoul from $432

The cheapest month to fly to Incheon Intl Airport from District of Columbia is in October. Flight prices, which tend to average around $1,294, are often lower during this time because this is during the off-season. If you are unable to visit Incheon Intl Airport during the month of October, then departing from District of Columbia during the month September is also very affordable. Most momondo users find prices during this month for around $1,313.

The cheapest day to depart from District of Columbia to Incheon Intl Airport is on a Tuesday when prices can be found for as low as $1,250. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,505. These prices are subject to change though, so be sure to set up a Price Alert for flights to Incheon Intl Airport.

In the evening is the cheapest time of day to fly from District of Columbia to Incheon Intl Airport when you can find flight prices for as low as $1,063. Flying to Incheon Intl Airport in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,366 on average. Flights to Incheon Intl Airport from District of Columbia in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

Fly from Washington, D.C. Dulles Intl to Incheon Intl for the best District of Columbia - Incheon Intl flight prices

You are more likely to see cheaper flights to Incheon Intl Airport from District of Columbia when booking weeks ahead of your departure date. In general, you can expect to find flights to Incheon Intl Airport for around $1,590 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Incheon Intl Airport from District of Columbia for as low as $1,339 on momondo.

There are 4 cabin classes available to choose from on District of Columbia to Incheon Intl Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Alaska Airlines and Cathay Pacific are the most popular carriers operating from District of Columbia to Incheon Intl

AIR PREMIA, Korean Air and Delta are the top three most popular airlines that fly to Incheon Intl Airport from District of Columbia according to our data. AIR PREMIA is the first choice among our users, with 50% of people opting to fly with this airline when traveling to Incheon Intl Airport. Keep in mind that there are 9 different airlines that fly to Incheon Intl Airport on a routine basis, so you have a few additional options to choose from.

The number of flights available between District of Columbia and Incheon Intl Airport is 2 per day as of July 2026. The most frequent departure time is 1:00PM, with 100% of daily flights leaving in the afternoon.

As of July 2026, there are 18 flights per week flying from District of Columbia to Incheon Intl Airport. The most common day of the week flights depart is Mon, with 17% of flights taking off on this day.