ICN - WAS

$382 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 10/15. 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

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., as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Incheon to Washington, D.C., as well as popular online travel agencies
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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.

Tue, Oct 28 - Tue, Nov 4
Air Canada Logo
7:10 pm - 8:29 pmICN-IAD
38h 19m1 stop
Air Canada Logo
4:25 pm - 5:10 pmIAD-ICN
34h 45m2 stops
$385Air Canada
Find Deal
Fri, Oct 24 - Sun, Nov 9
Air Canada Logo
5:45 pm - 12:08 pmICN-DCA
31h 23m2 stops
Air Canada Logo
4:10 pm - 5:10 pmDCA-ICN
35h 00m2 stops
$446Air Canada
Find Deal
Mon, Dec 15 - Fri, Feb 27
United Airlines Logo
6:00 pm - 5:16 pmICN-BWI
37h 16m1 stop
United Airlines Logo
8:30 am - 4:15 pmBWI-ICN
41h 45m1 stop
$503United Airlines
Find Deal
Fri, Feb 6 - Sun, Feb 15
United Airlines Logo
6:00 pm - 5:21 amICN-IAD
25h 21m2 stops
United Airlines Logo
1:02 pm - 5:40 amIAD-ICN
26h 38m2 stops
$503United Airlines
Find Deal
Wed, Oct 15 - Wed, Oct 22
American Airlines Logo
5:45 pm - 8:54 amICN-IAD
28h 09m2 stops
American Airlines Logo
5:06 am - 3:30 pmIAD-ICN
21h 24m2 stops
$575American Airlines
Find Deal
Wed, Oct 15 - Wed, Oct 22
American Airlines Logo
5:45 pm - 7:49 amICN-DCA
27h 04m2 stops
American Airlines Logo
5:00 am - 3:30 pmDCA-ICN
21h 30m2 stops
$575American Airlines
Find Deal
Mon, Oct 27 - Wed, Nov 5
 Logo
5:55 pm - 6:35 amICN-BWI
25h 40m2 stops
 Logo
8:26 pm - 5:10 pmBWI-ICN
30h 44m2 stops
Mon, Oct 27 - Wed, Nov 5
 Logo
5:55 pm - 10:28 amICN-BWI
29h 33m3 stops
 Logo
8:26 pm - 5:10 pmBWI-ICN
30h 44m2 stops
Fri, Feb 13 - Sun, Mar 8
Delta Logo
7:40 pm - 11:42 pmICN-BWI
18h 02m1 stop
Delta Logo
6:19 am - 3:30 pmBWI-ICN
20h 11m1 stop
$779Delta
Find Deal
Thu, Nov 13 - Tue, Feb 3
Delta Logo
7:30 pm - 11:49 pmICN-BWI
18h 19m1 stop
Delta Logo
6:19 am - 3:30 pmBWI-ICN
19h 11m1 stop
$780Delta
Find Deal

Everything you should know

Our travelers' advice
AI-generated summary based on content written by travel experts
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
Air Canada
Cheapest • from $385 (round-trip)
Korean Air
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
ICN-IAD
Cheapest
ICN-IAD
Most popular
Insights
Insights
Insights
Insights
When to book
5 weeks
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 9% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 44% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$385
Typical prices: $895-1687
Air Canada
Tue 10/28Tue 11/4
ICN - IAD • 1 stop
Cheapest non-stop
$1,296
Typical prices: $1,472-1995
Korean Air
Fri 10/24Sun 11/9
ICN - IAD • Non-stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Washington, D.C.!
Expert advice

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

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airports
ICN

Security lines at ICN can be long, so arrive early. Allow at least an hour for check-in, security, and passport control.

Read more about ICNby Robert Schrader
IAD

The Silver Line Metro offers a convenient ride from IAD to downtown D.C. in about 50 minutes.

Read more about IADby Stefanie Waldek
Our travel experts
Robert Schrader

Robert Schrader

Expert on ICN

Robert Schrader

Robert Schrader

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.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on IAD

Stefanie Waldek

Stefanie Waldek

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.

Read more
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.

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 $1,341 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., Saturday 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 Wednesday, with Saturday 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 $617 (return) on average. On the other hand, the most expensive months are July and January, where the average cost of round-trip tickets is $1,560 and $1,499 respectively.

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 5 weeks before departure, which saves you about 9% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$382
Best time to beat the crowds with an average 45% drop in price.
Most popular time to fly and prices are also 19% lower on average.
Flight from Incheon to Reagan Washington National Airport

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 $382 for a one-way ticket and $385 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.?

    SkyTeam is the only airline alliance operating flights between Seoul Incheon Airport and Washington, D.C..

  • 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 $1,461 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 $1,319 and an overall rating of 8.2.

  • 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 $1,107 or less one-way and $1,671 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

Korean Air

Korean Air

Tuesday

Korean Air

Korean Air

Wednesday

Korean Air

Korean Air

Thursday

Korean Air

Korean Air

Friday

Korean Air

Korean Air

Saturday

Korean Air

Korean Air

Sunday

Korean Air

Korean Air

See more direct flights

Direct returns

Washington, D.C. to Incheon Intl

Monday

Korean Air

Korean Air

Tuesday

Korean Air

Korean Air

Wednesday

Korean Air

Korean Air

Thursday

Korean Air

Korean Air

Friday

Korean Air

Korean Air

Saturday

Korean Air

Korean Air

Sunday

Korean Air

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 1139 reviews
8.7Crew
8.5Boarding
8.2Entertainment
8.1Food
8.3Comfort
Airline reviews

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.

10.0 ExcellentAnonymous, Aug 2025ICN - ATL
Read more Korean Air reviews

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.

They were trying to get people to check luggage because the over head compartments were full but when we boarded there were lots of empty places that people could have put the luggage.

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.

This flight was a superior flight in all regards. Extremely pleasant experience.

Korean Air is unlike any other major airline I have flown with. The grace and respect that the staff has from check in to de-boarding is unmatched. The flight attendants this time were especially wonderful to my five little children. They helped us rearrange to more suitable seating, brought our children’s meals, and patiently waited for them in the aisles when they had to use the bathroom. We felt so welcome and comfortable. I really appreciate the meal voucher when our flight was delayed. I am grateful to have had such an stress-free experience.

It's good overall. Flight was packed. Inflight entertainment choices were lacking.

They were very accommodating of a dietary issue. Nice movie & tv selections. Non-stop helped get through a very long (15 hr) flight

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.

It was great, but my bag was not loaded onto the connecting flight. I'm currently getting it resolved. If this isn't a problem, everything else was excellent.

Very clean ,flight attendants very professional,nice , Boarding was very easy

The aircraft was massive (A-380) and became crowded with 400+ passengers on board.

The plane hasnt left im stuck in seatle still my flight has been grounded for almost 5 hours

My luggage didn’t arrive with my flight. Flight was delayed by nearly 2 hours while we sat on the plane and I almost missed my connecting flight and subsequently missed the last train from the airport so it took me another 2 hours to get to my destination after arriving, Crew skipped me several times when offering beverages, and I couldn’t get their attention at times because they wouldn’t even make eye contact with me. They didn’t give me a form for disembarking so I had to go to the back of the line after waiting an eternity for immigration. Paid for on flight wi- fi that didn’t work for most of the flight.

Coming back to America was a peaceful flight everyone and everything was perfect

The beefsteak on the lunch menu was excellent! I usually do not eat airplane food. I loved it.

Flight was too cold. I wore a regular cotton tee and it wasn’t enough. It was a night time flight so I would have thought a blanket would be provided to passengers. A 4 hour flight and no options for a meal? I flew Asiana the next day from Seoul to Manilla. Same duration, 4 hours. They give everyone a pillow and blanket and serve a meal. Why is United so cheap and holding back meals and amenities? Also, they promote too much gay stuff and DEI in their advertisements. Please be mindful of other beliefs and don’t shove your gay ideology down my throat.

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

The airport crew helped a lot, what I didn’t like? We were not informed that we needed to pick our luggage’s, if the crew at the luggage center didn’t tell me I would have been home without my belongings, I was heading out to my next connecting flight while looking for what gate to go to, I asked one of the crews for help, he told me and he also told me to not forget to grab my luggage’s which was chocking, because on my way out the country that wasn’t required, I just hope none of your customers lost their luggage’s because of this.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

The flight crew was friendly. I tried to adjust my seat online ahead of time but no option existed without additional fees. My friend asked at the gate about a seat change and was able to make it happen. That was great! The flight crew moved a very tall gentleman and his companion which allowed us to have more space which was nice. Overall, good experience. Appreciated the blanket and pillow.

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

IAD with the archaic people movers is just a place to be avoided.

Overall, it was good. I was seating next to a wonderful lady and did not notice how time flew. Thanks

This is the best united airlines flight that I took. The crew was very friendly and the food was tasty!

It is clear that someone knew, and competent, is in charge of food at United Airlines at least for the international flights. I was flying in coach, but the choices of the dinner were excellent. Tasty, and appropriate size. I had the beef, which was a little bit like a shepherds pie, and it was good. Nothing comparable has been served on a United flight in years. It will not be confused with three star food, but it is very good for airline food. Even better was the breakfast choice between a cinnamon roll and a breakfast sandwich. I chose the breakfast sandwich which was absolutely delicious and which I would happily order again at my local Starbucks or Panera. It is clear that someone knew indifferent is in charge of the food and it’s about time.

Had one staff that was not pleasant. Seems they are stressed with too many people to care for.

I would have liked an opportunity to move to a different seat ( even would have checked in my hand luggage)as I had health issues where I didn't have to clamber over the passenger next to me to for toilet use/ movement [ She was a highly unpleasant neighbor to sit next to]. In addition, I found that my European phone plan had run out of data and so I was not receiving emails from yourselves on airport wifi to be able to check in online and verifications difficult as did not accept the ticket number I had. I asked for an extra blanket but was told there was none. Then I saw other passengers receiving them. I couldn't eat the food and asked for snacks : Stewardess said " on the way" but they did not bring. The best bit was the check in process in Lisbon. Very efficient. However, I did not understand why we had to collect our bags at Washington then go through customs again. It was not explained. I also with my leg and health issue had approximately mile walk to the gate ( which then changed) . There appeared to be no moving walkways or help provided.

The attendant were friendly. I suggest you have a medical attendant on board every flight so that in case someone is sick , he/she will help them.

We had a very long diversion and our food voucher didn’t work because the restaurants were closed

United airlines, mediocre at best. No issues , nothing great . Worked for me

Turbulent taking off & landing to Dulles from Raleigh. Flight from Dulles to Tokyo very good!!

I liked the behaviour of the crew members.The flight was good.

1 hour late No hot drinks No restroom in the back of the plane

I swear airplane seats keep getting smaller and smaller but everything else was great. Smooth sailing and we got in early.

No food to provide, they forgot that, in some cases, people stay at the airport for hours without food. Now, to provide them with food, they have to ask them to pay, because some don't have money. That way, they can't eat.

After a long flight from Tokyo, our connecting flight home was canceled due to “maintenance” while we were on our layover in Toronto. Very frustrating to close out our honeymoon, although I’m sure others had it even worse during last week’s strike. Air Canada staff at Pearson Airport are the one thing that kept me remotely at peace during this — they were very helpful and deserve a lot of props. But I would not fly Air Canada again.

I had wonderful wheelchair assistance through the Montreal airport onto the flight. Air Canada was excellent in this both at the Fredericton airport and the Montreal one where an attendant helped us through customs as well as transport and baggage security.

Horrible flight cancelled had to buy another very expensive ticket

Flight was cancelled last minute due to Air Canada strike leaving us stranded and having to stressfully find a way home that cost hundreds of dollars in excess cost added to the trip. Having just experienced our mother's funeral service, this was not a good way to end our trip.

Air Canada marooned me in Canada with no way back home during my summer vacation. I had to buy a last minute flight ticket for over $500 to make it back home. I have their credit card and have flown them for years. Never again.

Flight was cancelled last minute. Had to scramble and purchase a $2000 flight through a separate airlines. Stuck in Toronto two extra days. Missed my first two days on a new job. Had to rent a car for an additional two days. Scrambled to fins a place to live those extra two days. Spent a ton of extra money and lost a lot of money, as well as made a poor impression at work. Difficult difficult difficult

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

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