ICN - WAS

$504 Find Cheap Flights from Seoul Incheon Airport to Washington, D.C.

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Incheon Intl to Washington, D.C. departing on 8/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C.

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Incheon to Washington, D.C..
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Incheon to Washington, D.C..
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Everything you should know

Cheapest round-trip
$989
Typical prices: $1,681-$1,168
AIR PREMIA
Mon 5/25Mon 6/1
ICN - IAD • Non-stop
Cheapest non-stop
$988
Typical prices: $1,682-$1,151
AIR PREMIA
Mon 5/25Fri 6/5
ICN - IAD • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
The Silver Line Metro offers a convenient ride from IAD.
Security lines at ICN can be long, so arrive early.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $989 (round-trip)
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with Korean Air and AIR PREMIA. Average duration is 13h 50m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top routes
Cheapest
Most popular
Insights
Insights
Insights
Insights
Avoid delays
Most punctual • 87% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $570 (round-trip)
Shortest trip • 16h 25m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 45% price drop
Most popular
Good to know
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We hope you love your trip to Washington, D.C.!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Incheon Intl to Washington, D.C. (ICN-WAS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Incheon Intl to Washington, D.C. that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Incheon Intl to Washington, D.C.

Mon, May 25 - Mon, Jun 1
AIR PREMIA Logo
10:00 am - 10:50 am
ICN
-
IAD
13h 50mnonstop
AIR PREMIA Logo
1:20 pm - 5:55 pm
IAD
-
ICN
15h 35mnonstop
$989AIR PREMIA
Mon, May 25 - Fri, Jun 5
AIR PREMIA Logo
10:00 am - 10:50 am
ICN
-
IAD
13h 50mnonstop
AIR PREMIA Logo
1:20 pm - 5:55 pm
IAD
-
ICN
15h 35mnonstop
$993AIR PREMIA
Mon, May 25 - Fri, Jun 5
AIR PREMIA Logo
10:00 am - 10:50 am
ICN
-
IAD
13h 50mnonstop
AIR PREMIA Logo
1:20 pm - 5:55 pm
IAD
-
ICN
15h 35mnonstop
$1,028AIR PREMIA
Wed, Jun 10 - Mon, Jul 20
United Airlines Logo
11:30 am - 10:45 pm
ICN
-
BWI
24h 15m
2 stops
United Airlines Logo
6:59 pm - 4:20 am
BWI
-
ICN
20h 21m
1 stop
$1,145United Airlines
Wed, Jun 10 - Mon, Jul 20
United Airlines Logo
4:50 pm - 10:15 pm
ICN
-
DCA
18h 25m
1 stop
United Airlines Logo
7:55 am - 4:20 am
DCA
-
ICN
31h 25m
1 stop
$1,145United Airlines
Wed, Oct 14 - Wed, Nov 4
Air Canada Logo
5:45 pm - 8:55 am
ICN
-
DCA
28h 10m
2 stops
Air Canada Logo
11:00 am - 5:10 pm
DCA
-
ICN
40h 10m
2 stops
$1,205Air Canada
Thu, Sep 24 - Wed, Oct 7
Delta Logo
7:40 pm - 11:44 pm
ICN
-
BWI
17h 04m
1 stop
Delta Logo
7:30 am - 5:20 pm
BWI
-
ICN
20h 50m
1 stop
$1,208Delta
Fri, May 22 - Mon, Jun 29
Delta Logo
7:20 pm - 5:45 am
ICN
-
BWI
23h 25m
1 stop
Delta Logo
7:05 am - 3:20 pm
BWI
-
ICN
19h 15m
1 stop
$1,211Delta
Wed, Oct 7 - Tue, Oct 13
Air Canada Logo
5:45 pm - 8:55 am
ICN
-
DCA
28h 10m
2 stops
Air Canada Logo
8:40 pm - 4:05 pm
DCA
-
ICN
30h 25m
2 stops
$1,214Air Canada
Wed, Oct 7 - Tue, Oct 13
Multiple Airlines Logo
12:40 pm - 8:00 pm
ICN
-
DCA
20h 20m
1 stop
Multiple Airlines Logo
6:30 am - 4:30 pm
DCA
-
ICN
21h 00m
1 stop
$1,261Multiple Airlines
Booking Insights

KAYAK's insights & trends for Incheon Intl to Washington, D.C. flights

Get data-powered insights and trends into flights from Incheon Intl to Washington, D.C. to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Incheon Intl Airport to Washington, D.C.?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Incheon Intl Airport to Washington, D.C. departing in May.

What is the cheapest Incheon Intl Airport to Washington, D.C. flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from Incheon Intl Airport to Washington, D.C. costs $518 on the route between Incheon Intl Airport (ICN) and Washington, D.C. Dulles Intl Airport (IAD). It is also the most popular route.

What’s the cheapest day of the week to fly from Seoul Incheon Airport to Washington, D.C.?

The average price of all round-trip flights from Incheon Intl Airport to Washington, D.C. clicked on KAYAK for each day over the last 12 months.

For Seoul Incheon Airport to Washington, D.C., Friday is the cheapest day to fly on average and Thursday is the most expensive. Flying from Washington, D.C. back to Seoul Incheon Airport, the best deals are generally found on Tuesday, with Thursday being the most expensive.

What is the cheapest month to fly from Incheon Intl Airport to Washington, D.C.?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Incheon Intl Airport to Washington, D.C., removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Incheon Intl Airport to Washington, D.C. is September, where tickets cost $275 (return) on average. On the other hand, the most expensive months are July and January, where the average cost of round-trip tickets is $963 and $640 respectively.

Can I save money by flying with a layover from Incheon Intl Airport to Washington, D.C.?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at $1,019 on average.

How far in advance should I book a flight from Incheon Intl Airport to Washington, D.C.?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Incheon Intl Airport to Washington, D.C., removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Incheon Intl Airport to Washington, D.C., you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Expert advice

Expert advice for your flight from Incheon Intl to Washington, D.C.

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Robert Schrader

Robert Schrader

Expert on ICN

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Stefanie Waldek

Stefanie Waldek

Expert on IAD

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Good to know

Low seasonApril
Cheapest flight$504
Best time to beat the crowds but there is an average 13% increase in price.
Most popular time to fly and prices are also 18% lower on average.
Flight from Seoul Incheon Airport to Baltimore

When to book flights from Incheon Intl to Washington, D.C.

Are your dates flexible? Find out the best times to travel from Incheon Intl to Washington, D.C. based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Seoul Incheon Airport to Washington, D.C. flights

  • What is the cheapest flight from Incheon Intl Airport to Washington, D.C.?

    In the last 3 days, the lowest price for a flight from Incheon Intl Airport to Washington, D.C. was $504 for a one-way ticket and $989 for a round-trip.

  • Do I need a passport to fly between Seoul Incheon Airport and Washington, D.C.?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Seoul Incheon Airport and on arrival in Washington, D.C..

  • Which airports will I be using when flying from Seoul Incheon Airport to Washington, D.C.?

    On your way to Washington, D.C., you’ll fly out from Incheon Intl. You’ll be landing in one of Washington, D.C.’s 2 airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl.

  • Which airlines offer Wi-Fi service onboard planes from Seoul Incheon Airport to Washington, D.C.?

    Delta, and Asiana Airlines offer inflight Wi-Fi service on the Seoul Incheon Airport to Washington, D.C. flight route.

  • Which aircraft models fly most regularly from Seoul Incheon Airport to Washington, D.C.?

    The Boeing 777-300ER is the aircraft model that flies most regularly on the Seoul Incheon Airport to Washington, D.C. flight route.

  • Which airline alliances offer flights from Seoul Incheon Airport to Washington, D.C.?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Seoul Incheon Airport and Washington, D.C., with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Seoul Incheon Airport to Washington, D.C.?

    There are nonstop flights from Seoul Incheon Airport to Washington, D.C. on a daily basis.

  • Which is the best airline for flights from Incheon to Washington, D.C., Korean Air or Asiana Airlines?

    The two airlines most popular with KAYAK users for flights from Incheon to Washington, D.C. are Korean Air and Asiana Airlines. With an average price for the route of $1,372 and an overall rating of 8.4, Korean Air is the most popular choice. Asiana Airlines is also a great choice for the route, with an average price of $1,270 and an overall rating of 8.1.

  • How does KAYAK find such low prices on flights from Seoul Incheon Airport to Washington, D.C.?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seoul Incheon Airport to Washington, D.C..

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seoul Incheon Airport to Washington, D.C.?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from Seoul Incheon Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seoul Incheon Airport to Washington, D.C.?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington, D.C. with an airline and back to Seoul Incheon Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seoul Incheon Airport to Washington, D.C.?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington, D.C. from Seoul Incheon Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Incheon Intl Airport to Washington, D.C.

  • Looking for a cheap flight? 25% of our users found flights on this route for $629 or less one-way and $1,034 or less round-trip.

Prefer to fly direct from Seoul Incheon Airport to Washington, D.C.?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Incheon Intl to Washington, D.C..
Find which airlines fly direct from Incheon Intl Airport to Washington, D.C., which days they fly and book direct flights.

Direct departures

Incheon Intl to Washington, D.C.

Monday

AIR PREMIA,Korean Air

AIR PREMIA,Korean Air

Tuesday

Korean Air

Korean Air

Wednesday

AIR PREMIA,Korean Air

AIR PREMIA,Korean Air

Thursday

Korean Air

Korean Air

Friday

AIR PREMIA,Korean Air

AIR PREMIA,Korean Air

Saturday

Korean Air

Korean Air

Sunday

AIR PREMIA,Korean Air

AIR PREMIA,Korean Air

See more direct flights

Direct returns

Washington, D.C. to Incheon Intl

Monday

AIR PREMIA,Korean Air

AIR PREMIA,Korean Air

Tuesday

Korean Air

Korean Air

Wednesday

AIR PREMIA,Korean Air

AIR PREMIA,Korean Air

Thursday

Korean Air

Korean Air

Friday

AIR PREMIA,Korean Air

AIR PREMIA,Korean Air

Saturday

Korean Air

Korean Air

Sunday

AIR PREMIA,Korean Air

AIR PREMIA,Korean Air

See more direct flights

Reviews of the top 5 airlines serving from Incheon Intl to Washington, D.C.

 
See real verified KAYAK customer reviews for airlines flying from Incheon to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Incheon Intl to Washington, D.C.? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
Korean AirOverall score based on 1214 reviews
8.1Food
8.3Comfort
8.7Crew
8.5Boarding
8.2Entertainment
Airline reviews

Very long flight time. Still better than a connection flight. Staff is very good at service. Vegetarian food is not very good.

8.0 ExcellentGary, Apr 2026
ICN - YYZ
Read more Korean Air reviews

Very long flight time. Still better than a connection flight. Staff is very good at service. Vegetarian food is not very good.

The business class is excellent. I loved the food, and the crew was very attentive and professional. From boarding to arrival, everything felt smooth and well-organised.

Lousy entertainment system. Crews are excellent. Meal is just mediocre.

Great service and comfort level. You can have more of vegetarian food options.

It’s great, long flight and arrive safe at destination

Everything was excellent as I expected. They also had a very caring crew. I had a headache and asked a Tylenol. The crew members kept checking with me how I was doing.

I can't believe they put my wife and I in the two middle seats! It is a very long flight and we had single flyers on either side of us blocking the way to the bathroom! There's no reason to not give one of us the isle seat so we could have managed bathroom needs and snacks with convenience. So I think very poorly of Korean air to put us both in the middle, I've never had that happen before and will probably avoid this airline in the future because of this. We tried to have them change it but they didn't so you pretty much lost a customer because of it.

There could have been better spacing of the passengers, it was crowded in some parts of the plane then other while rows were empty

Plane took off on time and I had the whole row to myself!

One of the flight attendants stepped on my foot. I was on the aisle seat. A lady inside needed to get out. So Instood. Just then, a flight attentendant came wuicklybtheoughbthe aisle and stepprd on my sock covered toes. I let out a small sound. She stopped momentarily, but didn’t ask how I was just took off of the aisle. Never came back to see how I was. Fortunately, I was not really hurt other than a slight soreness in my toes. But I found that to be very negligent.

Smooth sailing trip, pilots are good. Less amount of food offered but the quality is okey.

Kayak uses scammer sites to steal money from their victims.

Kayak along with airfare assay are attempting to steal my money. Charges are being pressed.

Felt like the oldest plane in Asiana Fleet. Screen was 5-6in only and no charging at all. Movie selection wasn't great.

When one asks for water because they are dehydrated, bring more then a sip or two in a small cup. Bring them a whole bottle.

Food could be better it was okay. Entertainment seems dated it was something but in this day and age could be a lot better.

I am thankful that I was able to fly using Asiana

The customer service was excellent. They noticed that our connecting flight was scheduled too closely for us to complete customs, so they changed the flight. Our initial flight was delayed, and they were able to get us on another flight, all without charging us any additional fees. I would fly them again anytime!

Better screens, it would have been nice to have more comfortable seats.

2nd major delay due to maintenance issues. 1st delay missed my connecting flight.

Round trip flight to Canada and back to the US was smooth and efficient.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

Spanish speaker flight attendants were incredibly rude. A male flight attendant named Allen, grabbed my bag out of the overhead bin and moved it without my permission. When I asked what he was doing, he informed me that the overhead bins were public space? It would be easy to ignore this comment, as you don’t know the whole story, but the flight attendants were militant and rude. Delta, you can do better!

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

My business class seat was inoperable and unable to recline for 10 hour flight.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

Terrific in every way. On time, professional staff, multiple movie options to select, great food and drink.

My bags were misplaced!!! Im in a foreign country with no bags

I liked that it was on time, however, the food was not good.

Offered to check carry on to final destination. This is the most absurd thing in the world. I'm carrying on because I need what is in the carry-on. I'm okay with picking up at next stop but then I will be on much larger plane that can accommodate it. Also, if there is ever a change to your flight. Go to the airport and have the people there fix your ticket. Don't do it over the phone or online with United they screwed us up and ended up with flights for our last leg that took off before our first leg.

United is one airline which regardless of how many separate United tickets in existence, if one flight breaks down, the airline will take care of all the flights.

It was okay, the food was good, but after the landing there was not enough time for luggage and security to catch a connection. It was crowded on board.

When I went to check in at the United counter in Barcelona, Spain I had 2 different menat 2 different times in United uniforms (standing around with a couple other employees) ask me if I was traveling alone. The one man asked me 3 different ways if I was traveling alone. I am, 68 yeaers old and have all my faculties. I thought it was weird and it made me feel very uncomfortable. What difference does it make if I was traveling alone or with someone? What if I was a recent widow? That would have been horrible. They never gave me a reason why they needed to know who I was traveling with. I was hesitant to question them because I needed to be on that flight.

We were delayed for about an hour from taking off due to traffic control procedures at the destination airport. But once in the air, the flight went well. The crew members were great and provided cabin service despite moderate turbulence during much of the flight.

Crew was great. 2 1/2 hour delay was due to staff needing "rest" was avoidable and self inflicted as United not willing to hire enough crew to keep flight on time.. Ridiculous. The crew and the passengers both suffered due to this.

Flight attendants were ok. But it was a full flight.

Flight itself was not bad at all. However: my checked bag (checked in Calgary) did not make it onto this flight as I found out after I landed at EWR. I still don't have it but it appears that it is on its way to me.

Flight and attendance were very good we had 2 hour delay that took the shine of it

After 3 hours of delays, they ended up cancelling my flight. And although I could purchase one-way tickets to get to my destination, they would not offer me these flights as compensation for the cancelled flight, and I didn't end up making it home until 13 hours after I was originally supposed to arrive. It made for an extremely strenuous end to an otherwise good trip.

Be careful about the bad policy and when purchasing seats

Very disappointed with premier lounge. Food selection very poor, both coffee machines out of order. For the price you charge for an upgrade, the seats don’t fully recline, movie selection is old. Not very good value. Asian airlines are light years ahead at a more affordable price.

The seat design in the premium economy section leaves virtually no room under the seat to store a bag or purse. Other than that, it was a great flight. Arrived early.

The flight was delayed, but not for weather. We landed over 3hrs later than planned.

The stag were helpful, kind and liked the passengers. The plane was pristinely clean! Great flight!

My flight was delayed more than once, but Air Canada updated us regularly. Friends on other airlines had much worse experiences.

Everything you need to know for your flight from Incheon Intl to Washington, D.C.

Information on your arrival and departure airports