Cheap flights from Incheon Intl Airport to Washington, D.C. from $381

In general, April is the cheapest month to fly from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,198. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of April, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $1,252.

Our data shows that Friday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $1,126. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport for around $1,924.

Flying to Washington, D.C. Dulles Intl Airport from Incheon Intl Airport in the evening is the least expensive time of day to depart. momondo users have found prices as low as $1,254 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,346 on average. Flights to Washington, D.C. Dulles Intl Airport from Incheon Intl Airport in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Incheon Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $1,426 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Incheon Intl Airport for as low as $989 on momondo.

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

You could potentially save up to 43% on your flight if you consider stops on a Incheon Intl Airport to Washington, D.C. Dulles Intl Airport flight.

As of November 2026, prices for Incheon Intl Airport to Washington, D.C. Dulles Intl Airport flights are approximately 4% cheaper when compared to flights at the same time last year.

United Airlines and Alaska Airlines are the most popular carriers operating from Incheon Intl to Washington, D.C. Dulles Intl

AIR PREMIA, Korean Air and Delta are the top three most popular airlines that fly to Washington, D.C. Dulles Intl Airport from Incheon Intl Airport according to our data. AIR PREMIA is the first choice among our users, with 54% of people opting to fly with this airline when traveling to Washington, D.C. Dulles Intl Airport. Keep in mind that there are 4 different airlines that fly to Washington, D.C. Dulles Intl Airport on a routine basis, so you have a few additional options to choose from.

Historically, on average around 10% of flights between Incheon and Washington, D.C. have experienced a delay on any given week. The average delay length over the past 12 months has been 82 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights in the morning have, in the past, seen delays more frequently in comparison.

Thursday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, AIR PREMIA have had the least number of delays on this route over the last 12 months; with about 8% of their flights experiencing any sort of delay.

Dallas (DFW) was the most common stop: 63% of momondo users choosing 1-stop flights on this route connected there.

Flights via Dallas (DFW) offer the lowest average round-trip price of $723.

Flights connecting via Dallas (DFW) have the shortest average one-way travel time: 17h 44m.

Dallas (DFW) has the shortest average layover time for this route: 1h 42m.

As of November 2026, there are 2 flights per day flying from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport. The most common time of day flights depart is 10:00AM, with 80% of flights taking off at noon.

14 flights are operational weekly from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport as of November 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.