$358 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, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Washington, as well as popular online travel agencies
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Useful Info

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 $542 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 $542.

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 May, when tickets cost $651 (return) on average. On the other hand, the most expensive months are August and July, when the average cost of round-trip tickets is $1,420 and $1,164 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 2 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 $690.


Good to know

Low seasonFebruary
High seasonSeptember
Cheapest flight$358
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 25% increase in price.
Flight from Incheon to Seattle

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 $294. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $712 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 $913 on average. Morning departures are around 20% 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 $1,096.

Reviews of the 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 1090 reviews
8.1Food
8.5Boarding
8.2Entertainment
8.3Comfort
8.7Crew
Airline reviews

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

10.0 ExcellentANTHONY JAMES, May 2025ICN - SGN
Read more Korean Air reviews

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

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

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.

Staff always with a smile and very helpful with my mom who has mobility issues.

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

I like for how they process during check in. It was very smoothly.

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent check-in. Crew was good. Excellent communication from flight deck.

Great overall. There was a bit of turbulence so they could only serve water because too much turbulence for the carts. Was glad they prioritized safety though

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

Flight was on time. Boarding was smooth. Flight attendants were friendly and efficient. Entertainment system was broken for all passengers on the left side of the aisle. I would prefer if meals were not served on red eye flights. No one should need to dine at that time and it is disturbing for those passengers trying to sleep.

Gate agent did not hold flight for connection, provided no assistance to get new flight

Evidently, my seat had the only broken TV. I couldn’t plug it in, get it to come on, or watch anything, and of course, no one could fix it while we were on the plane. The service was good and the boarding was quick

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

Efficient, calm when things were delayed and kept us regularly informed of what was happening.

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

Air Canada never runs on time. You’re lucky if your flight is not cancelled or diverted. Worst airline in the world for gas lighting its customers.

No space in overhead bin, one cookie, 2 oz of juice - is not customer service.

Good flight, friendly crew and overall - good service on United Airlines.

Received email saying that there won’t be a seat back entertainment screen and inflight WiFi would be available. But no WiFi both ways. Say it in the email.

Somebody either kayak or Air Canada booked my flight under my preferred name Betty instead of my legal name and I almost was denied boarding my flight

flight landed late almost 1.00hr and we 4 passengers missed our connected flight to indianapolis, we need to get the hotel and taxi for the next day flight to home in indianapolis, cost us $ 300 more

Or the greatest and it ended up picking us up from Chicago to Toronto not sure who was tesponsible for the 4 hr delay. United should have been properly prepared for a scheduled flight from Austin to Chicago and they were not.

Good, only discomfort was consistent turbulence through the 3 hour flight. Not sure if in companies control though.

From the kind young lady (w/Vancouver air security) who expedited our check-in to U.S. Customs to the Air Canada gate crew who gave us pre-boarding, the flight attendants who actually offered a strong hand to help me board once I had surrendered my rolling walker at the door, they are all reflections of the thoughtful, genuinely helpful Canadians we have grown to appreciate. Water and other beverages were offered throughout the flight to make sure we weren't dehydrated and the cookie was great. (Husband bought the fruit & crackers snack,) I was delighted to see three movies that I would not have otherwise seen and appreciate that AC left the last film viewable until its conclusion although the flight had actually landed. Last, mahalo to the kind strong gentleman who not offered his hand to help me debark the plane, but gave me an AC pin that I'll truly treasure.

The ground staff was so rude in Toronto airport ...very rude and did not answer simple questions, and made me look like a fool. Very rude ground staff.

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.
9/24Wed
nonstopAsiana Airlines
10h 10mICN-SEA
10/3Fri
nonstopAsiana Airlines
11h 40mSEA-ICN
$500
10/29Wed
nonstopAsiana Airlines
9h 55mICN-SEA
11/5Wed
nonstopAsiana Airlines
12h 10mSEA-ICN
$523
9/9Tue
1 stopAir Canada
31h 36mICN-SEA
9/17Wed
1 stopAir Canada
28h 50mSEA-ICN
$556
9/9Tue
1 stopAir Canada
12h 31mICN-SEA
10/29Wed
1 stopAir Canada
27h 45mSEA-ICN
$560
9/25Thu
nonstopKorean Air
10h 00mICN-SEA
9/30Tue
nonstopKorean Air
11h 50mSEA-ICN
$565
9/15Mon
nonstopKorean Air
10h 00mICN-SEA
9/29Mon
nonstopKorean Air
11h 50mSEA-ICN
$574
9/27Sat
nonstopDelta
10h 20mICN-SEA
10/4Sat
nonstopDelta
12h 05mSEA-ICN
$602
10/29Wed
2 stopsUnited Airlines
22h 10mICN-SEA
11/8Sat
2 stopsUnited Airlines
20h 52mSEA-ICN
$607
10/20Mon
2 stopsUnited Airlines
26h 23mICN-SEA
10/29Wed
1 stopUnited Airlines
21h 03mSEA-ICN
$608
9/27Sat
nonstopDelta
10h 20mICN-SEA
9/30Tue
1 stopDelta
19h 05mSEA-ICN
$613

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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.
10/11Sat
2 stops
33h 04mICN-SEA
$358
7/8Tue
2 stops
43h 40mICN-SEA
$392
9/17Wed
nonstopKorean Air
10h 00mICN-SEA
$456
10/14Tue
nonstopDelta
10h 10mICN-SEA
$458
9/18Thu
nonstopKorean Air
10h 00mICN-SEA
$459
11/4Tue
nonstopDelta
10h 15mICN-SEA
$461
12/4Thu
1 stopAir Canada
16h 36mICN-SEA
$541
12/13Sat
1 stopAir Canada
12h 36mICN-SEA
$548
7/30Wed
2 stopsAsiana Airlines
21h 15mPUS-SEA
$775
8/1Fri
2 stopsAsiana Airlines
21h 15mPUS-SEA
$845

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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.
6/22Sun
nonstopAsiana Airlines
10h 10mICN-SEA
6/30Mon
nonstopAsiana Airlines
11h 40mSEA-ICN
$561
6/20Fri
nonstopAsiana Airlines
10h 10mICN-SEA
7/10Thu
nonstopAsiana Airlines
11h 25mSEA-ICN
$565
6/19Thu
multi-stopUnited Airlines
34h 31mICN-SEA
7/5Sat
multi-stopUnited Airlines
17h 50mSEA-ICN
$604
6/20Fri
multi-stopUnited Airlines
18h 31mICN-SEA
7/20Sun
multi-stopUnited Airlines
29h 35mSEA-ICN
$621
6/20Fri
nonstopKorean Air
10h 20mICN-SEA
6/25Wed
nonstopKorean Air
11h 35mSEA-ICN
$637
6/21Sat
nonstopKorean Air
10h 20mICN-SEA
6/24Tue
nonstopKorean Air
11h 35mSEA-ICN
$638
6/19Thu
nonstopDelta
10h 20mICN-SEA
7/5Sat
multi-stopDelta
19h 15mSEA-ICN
$660
6/19Thu
multi-stopDelta
31h 15mICN-PDX
9/11Thu
multi-stopDelta
15h 20mPDX-ICN
$710
6/19Thu
multi-stopAir Canada
20h 31mICN-SEA
7/3Thu
multi-stopAir Canada
34h 20mSEA-ICN
$1,011
6/19Thu
multi-stopAir Canada
31h 36mICN-SEA
7/3Thu
multi-stopAir Canada
33h 10mSEA-ICN
$1,015

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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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