$349 Find Cheap Flights from South Korea to Washington

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KAYAK searches hundreds of travel sites at once for deals on flights to Washington

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Washington
These are the airlines KAYAK users have selected most often from within our search results for flights to Washington
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KAYAK's insights & trends for flights to Washington

Get data-powered insights and trends for flights to Washington to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to Washington?

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.

The cheapest ticket to Washington from South Korea found in the last 72 hours was to Seattle, at $470 round-trip. The most popular route is Incheon Intl Airport (ICN) to Seattle (SEA) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $470.

What is the cheapest month to fly from South Korea to Washington?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from South Korea to Washington, 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 South Korea to Washington is April, when tickets cost $673 (return) on average. On the other hand, the most expensive months are August and July, when the average cost of round-trip tickets is $1,441 and $1,280 respectively.

How far in advance should I book a flight from South Korea to Washington?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Washington, 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 South Korea to Washington, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Which is the cheapest airport to fly into in Washington?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Washington is Seattle/Tacoma Intl Airport (SEA), with an average flight price of $686.


Good to know

Low seasonFebruary
High seasonSeptember
Cheapest flight$349
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Incheon to Seattle

Flights from South Korea to Washington: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from South Korea to Washington 
RalphFlew with Asiana AirlinesICN-SEAApr 2024
Would have been nice to be able to book an extra bag ahead of time.
AnantFlew with Asiana AirlinesICN-SEAApr 2024
Flight is good with Crew members But certainly Indian Vegitarian meal needs immediate attention from your catering team There are many Indian people flying who did not got satisfactory Indian food Appreciate if there is an immediate attention

FAQs for booking flights from South Korea to Washington

  • How does KAYAK find such low prices on flights from South Korea to Washington?

    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 South Korea to Washington.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from South Korea to Washington?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from South Korea to Washington 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 South Korea to Washington?

    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 from South Korea to Washington with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from South Korea to Washington?

    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 from South Korea to Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest day to fly to Washington?

    Based on KAYAK data, the cheapest day to fly to Washington is Friday where round-trip tickets can be as cheap as $293. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $723 on average.

  • What is the cheapest time of day to fly to Washington?

    The cheapest time of day to fly to Washington is generally in the evening, when round-trip flights cost $1,021 on average. Morning departures are around 4% more expensive than evening flights, on average. The most expensive time of day to fly to Washington is generally at night, which is peak travel time and where the average cost of a ticket is $1,254.

Top 5 airlines serving from South Korea to Washington

 
See real verified KAYAK customer reviews for airlines flying to Washington. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from South Korea to Washington. 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 South Korea to Washington? 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 1066 reviews
8.1Food
8.3Comfort
8.7Crew
8.2Entertainment
8.5Boarding
Airline reviews

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

8.0 ExcellentEdward, Apr 2025ICN - LAS
Read more Korean Air reviews

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

They did an excellent job helping me with a wheelchair. I couldn’t have asked for any better help.

Great except for the delay in Korea. Korean Air did a great job setting up a hotel for the night. I also needed assistance with a wheelchair and they were outstanding.

The flight was on time and very quick, as expected, but the leg room isn't great in coach seats.

The boarding process for Korean airlines is very straightforward and easy. You've never met such helpful and friendly people. The food was great and the entertainment options were excellent too. My teenage boys found programs they wanted to watch while I had fun watching a full season of the Last Man - the Blind Investigator (Japanese), which my wife enjoyed too. My only complaint was that it takes a very long time to taxi at ICN (20 minutes) and the pilot had to hold at the gate for 10 minutes after our scheduled departure time, which meant we got to Seattle 27 minutes late. Luckily I had a long enough connection to make my next flight, but just barely.

Best service I’ve ever had Flight attendants are nicely dressed and look very professional

Just a typical domestic poor flight nothing more. There is no food choices in such a flight. Crew doesn't really care if you are on-board or not

My second flight wasn't better than the first one. And this is 14 hours trip, crew came out only to offer food and the choices was poor. This food choices are good for Asian people but not for westerners. The breakfast kind thing was a corn sausage really disgusting. The air-conditioned blower really blow high and cold, turn out on my arrival to feel seek, that makes the trip uncomfortable. The crew didn't not really come out during the trip to offer drinks or snacks. No fruits available. Very poor service

Our seat row plus one ahead and behind we're completely overlooked during beverage service...

It was amazing. I was not expecting the phenomenal customer service Asiana provides.

It was all perfect and very pleasant for such long flights

The seats felt very small. We were supplied with pillows and blankets, which was nice. Lots of noise from the bathroom, plus exterior noise. Made it hard to hear the entertainment system, even using my own noise-cancelling headphones. The food was really bad. I generally request a vegetarian meal and one was supplied, but the pasta was cold and hard and there was nothing pleasant about it. Two meals were served on this flight; one was a repeat of the meal I had had on the flight immediately preceding this one, which was bad enough I didn't even try it. Drinks were very limited. All I wanted was water, and on a 10.5 hour flight, I was given 3 cups of about 3 ounces each.

We took business class, It was comfortable and I was able to sleep.

Everything was perfect. A flight attendant even brought me snacks after I declined food due to my desire to force myself to follow the destination time zone.

For the most part, it was an enjoyable experience. It's the 2nd half of the journey was a bit uncomfortable. It was on a noticable smaller plane compared to the previous one.

Only process that my luggage didn’t make it to my destination because of short connection but I understand

The boarding process was good. The toilet could be better maintained.

This has been the worst experience I've ever had. We arrived to Ho Chi Minh Airport and were supposed to get our Asiana ticket from the transfer counter as we came with a different airline. However, the staff at the transfer counter were not helpful and kept giving us different information. We were first told by Asiana airlines staff we had to wait 2 hours so they could print out and give us our tickets, then someone else told us we had to wait 3hrs, someone told us "I don't know, just go sit and wait and we will tell you later." This was at a place in the Ho Chi Minh airport that had no coffee or food shops, nothing, just immigration (to enter Vietnam with a Vietnam Visa) and security (to transfer into the gates) but we needed our printed boarding pass to go through. It wasn't until we demanded to speak to a supervisor as our flight time was 1hr away because they kept telling us "there's alot of time left for your international flight, we will get your tickets later" we still had to wait around 20minutes for the "Supervisor" to give us our tickets. I would NOT recommend Asiana Airlines, especially if going thru Ho Chi Minh Airport as they are not helpful. (We almost missed our flight, due to their lazyness and incompetence of printing our tickets) I would suggest Asiana Airlines to have a Machine in the transfer area so passengers can easily print out their boarding passes themselves and save some money by not hiring incompetent staff that can't do a simple task such as printing a boarding pass.

Great service. They could offer vegetarian food and do more to reduce waste.

Fine except the person next to me took up her seat had raised the arm divide so she spilled into my seat. because of her size. Fortunately no one was in the seat on my right so I could use part of it.

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

Delta is a cut above the others in customer service.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

Paid $35 and not able to access the internet at all.

Several delays. Next flight was worse. Did not arrive home until 2am PT

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

First world problems, but still… We were seated in first class and asked for a cocktail on a very short, 50 minute flight. After our drink order was taken, a half hour went by, and we noticed that every other person in the small plane had been served except for us. We got up to ask about it, the drinks finally came, then were taken away three minutes later since the flight was so short. Really strange situation, on the other hand, we were in Utah.

We missed our flight. The boarding pass had the wrong gate and by the time we received the text from Kayak, our flight was already gone. I’ll never use Kayak again and will go direct to the airlines in the future.

Boarding took forever, the plane was cramped and cold, and the seatbelt song came on constantly throughout the red eye flight with a loud pre-recorded message playing each time

Cabin felt crammed Snacks are lame But crew was super efficient getting us out on time despite delay

Flight was delayed bc of mechanical issue. New plane had different configuration so some seats had to be switched. They called all passengers who needed new boarding cards. They did not call us so we thought our seats were the same and fine. When we boarded they informed us our receipts had changed and we are now all sitting separate and in the back row. Both my daughters had meltdowns and started to cry and once we got on the flight, we figured out how we could sit closer to each other, but this was very upsetting.

Took off on time and successfully avoided weather that looked to be a problem along the way

My flight got delayed 5 times and then got cancelled eventually, I had to get a hotel and uber and pay for food for an extra night without any plans. It was a horrible experience, instead of Air Canada, I was flying with United .

I had a nice flight with free wifi. So I was able to message family members and stream music during my flight, which made the trip go by fast. I also enjoyed flying on there Airbus A220. The plane looked very new and it also got up to speed fast down the runway and didn't need much runway to get airborne.

Short flight so no food or entertainment. Good landing at SFO and on time. We were told no carryon luggage yet lots of people were puting bags in overhead compartments. The rules need to be made more clear. I was on the first leg of an international flight and this is the first time I could not have carryon luggage.

My flight was overbooked and they would not let me board. I had to book another flight and pay the full amount of that flight. I did not get any help at all from Air Canada or United Airlines.

Comfortable seats and movies entertainment available. Better experience than the flight from Toronto to Denver.

Overall good experience. The flight from Toronto to Denver does not have entertainment - movies to watch.

There is not enough space between two chairs and raws.

Everything was made rather simple, so I appreciate that. All the people I dealt with from entering the airport in Jacksonville to my lonnnnnnng walk to my next gate in Chicago were excellent and very helpful.

Crammed in like cattle waited 30 mins for late connecting flight (flight didn’t wait for me for me when I missed my connection at 2 different airports on outward journey)

Terrible. 3 missed flights and 24 hours delayed with lost bag and promised $100 compensation from United and absolutely nothing from them…

Book cheap flights from South Korea to Washington

Recent round-trip flight deals

 
These are the cheapest round-trip flights to Washington found on KAYAK in the last 72 hours.
5/12Mon
nonstopAsiana Airlines
10h 10mICN-SEA
5/29Thu
nonstopAsiana Airlines
11h 40mSEA-ICN
$451
5/13Tue
nonstopAsiana Airlines
10h 10mICN-SEA
6/1Sun
nonstopAsiana Airlines
11h 40mSEA-ICN
$452
5/30Fri
nonstopKorean Air
10h 00mICN-SEA
6/2Mon
nonstopKorean Air
11h 20mSEA-ICN
$454
5/12Mon
nonstopKorean Air
10h 00mICN-SEA
6/5Thu
nonstopKorean Air
11h 20mSEA-ICN
$455
6/3Tue
1 stopUnited Airlines
15h 57mICN-SEA
6/28Sat
2 stopsUnited Airlines
29h 35mSEA-ICN
$483
5/10Sat
2 stopsUnited Airlines
25h 32mICN-SEA
5/14Wed
1 stopUnited Airlines
29h 20mSEA-ICN
$485
5/13Tue
1 stopDelta
27h 50mICN-SEA
5/16Fri
nonstopDelta
11h 50mSEA-ICN
$555
5/14Wed
1 stopDelta
16h 08mICN-SEA
5/20Tue
nonstopDelta
11h 50mSEA-ICN
$557
9/11Thu
1 stopAir Canada
12h 31mICN-SEA
9/18Thu
1 stopAir Canada
14h 05mSEA-ICN
$573
9/9Tue
1 stopAir Canada
12h 31mICN-SEA
9/16Tue
1 stopAir Canada
14h 05mSEA-ICN
$574

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to Washington found on KAYAK in the last 72 hours.
6/2Mon
2 stops
45h 50mICN-SEA
$349
5/28Wed
1 stop
16h 36mICN-SEA
$373
9/9Tue
1 stopAir Canada
12h 31mICN-SEA
$514
9/11Thu
1 stopAir Canada
12h 31mICN-SEA
$515
5/27Tue
nonstopAsiana Airlines
10h 10mICN-SEA
$516
5/14Wed
nonstopAsiana Airlines
10h 10mICN-SEA
$521
6/2Mon
nonstopKorean Air
10h 10mICN-SEA
$599
6/2Mon
1 stopKorean Air
16h 10mPUS-SEA
$673
6/23Mon
2 stopsDelta
25h 09mPUS-PDX
$703
7/27Sun
1 stopDelta
17h 41mICN-PDX
$858

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Last minute flights to Washington

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights to Washington that are departing in the next 10 days.
5/4Sun
nonstopKorean Air
10h 00mICN-SEA
5/16Fri
nonstopKorean Air
11h 50mSEA-ICN
$453
5/5Mon
nonstopKorean Air
10h 00mICN-SEA
5/15Thu
nonstopKorean Air
11h 50mSEA-ICN
$455
5/5Mon
nonstopAsiana Airlines
10h 10mICN-SEA
5/9Fri
nonstopAsiana Airlines
11h 40mSEA-ICN
$457
5/5Mon
nonstopAsiana Airlines
10h 10mICN-SEA
5/9Fri
nonstopAsiana Airlines
11h 40mSEA-ICN
$458
5/4Sun
multi-stopUnited Airlines
20h 41mICN-SEA
5/7Wed
multi-stopUnited Airlines
27h 20mSEA-ICN
$483
5/4Sun
multi-stopUnited Airlines
20h 12mICN-SEA
5/6Tue
multi-stopUnited Airlines
30h 05mSEA-ICN
$485
5/5Mon
multi-stopDelta
16h 47mICN-SEA
5/15Thu
nonstopDelta
11h 50mSEA-ICN
$555
5/5Mon
multi-stopDelta
16h 47mICN-SEA
5/18Sun
nonstopDelta
11h 50mSEA-ICN
$583
5/4Sun
multi-stopAmerican Airlines
33h 24mICN-PDX
5/9Fri
multi-stopAmerican Airlines
56h 06mPDX-ICN
$713
5/4Sun
multi-stopAmerican Airlines
39h 39mICN-PDX
5/9Fri
multi-stopAmerican Airlines
56h 06mPDX-ICN
$725

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Everything you need to know for your flight to Washington

Cabin class types available on flights to Washington

Cabin classes available on flights to Washington. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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