$431 Find Cheap Flights from South Korea to Washington - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from South Korea to Washington departing on 10/10. 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.
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Cheap Flights from South Korea to Washington

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from South Korea to Washington 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 South Korea to Washington

Mon, Sep 14 - Fri, Sep 18
Air Canada Logo
5:45 pm - 10:47 pm
ICN
-
SEA
21h 02m
1 stop
Air Canada Logo
5:50 am - 4:05 pm
SEA
-
ICN
18h 15m
1 stop
$801Air Canada
Fri, Oct 2 - Tue, Oct 6
Air Canada Logo
5:45 pm - 6:32 pm
ICN
-
SEA
16h 47m
1 stop
Air Canada Logo
7:20 pm - 4:05 pm
SEA
-
ICN
28h 45m
1 stop
$801Air Canada
Mon, Sep 21 - Sun, Sep 27
Alaska Airlines Logo
7:35 pm - 1:40 pm
ICN
-
SEA
10h 05mnonstop
Alaska Airlines Logo
1:35 pm - 5:30 pm
SEA
-
ICN
11h 55mnonstop
$801Alaska Airlines
Mon, Sep 7 - Sun, Sep 20
Philippine Airlines Logo
8:30 pm - 8:05 pm
ICN
-
SEA
39h 35m
1 stop
Philippine Airlines Logo
11:10 pm - 7:15 pm
SEA
-
ICN
28h 05m
1 stop
$807Philippine Airlines
Mon, Sep 7 - Sun, Sep 20
Philippine Airlines Logo
8:30 pm - 8:05 pm
ICN
-
SEA
39h 35m
1 stop
Philippine Airlines Logo
11:10 pm - 7:15 pm
SEA
-
ICN
28h 05m
1 stop
$811Philippine Airlines
Wed, Sep 9 - Sun, Sep 20
Alaska Airlines Logo
7:35 pm - 1:40 pm
ICN
-
SEA
10h 05mnonstop
Alaska Airlines Logo
1:35 pm - 5:30 pm
SEA
-
ICN
11h 55mnonstop
$813Alaska Airlines
Tue, Oct 6 - Mon, Oct 12
Asiana Airlines Logo
9:20 pm - 3:15 pm
ICN
-
SEA
9h 55mnonstop
Asiana Airlines Logo
12:10 am - 4:30 am
SEA
-
ICN
12h 20mnonstop
$825Asiana Airlines
Thu, Oct 1 - Mon, Oct 12
Asiana Airlines Logo
9:20 pm - 3:15 pm
ICN
-
SEA
9h 55mnonstop
Asiana Airlines Logo
12:10 am - 4:30 am
SEA
-
ICN
12h 20mnonstop
$825Asiana Airlines
Mon, Sep 7 - Sun, Sep 20
Korean Air Logo
4:40 pm - 10:40 am
ICN
-
SEA
10h 00mnonstop
Korean Air Logo
1:00 pm - 4:50 pm
SEA
-
ICN
11h 50mnonstop
$900Korean Air
Thu, Sep 17 - Sun, Sep 27
Korean Air Logo
7:00 pm - 1:37 pm
ICN
-
SEA
10h 37mnonstop
Korean Air Logo
12:50 pm - 4:40 pm
SEA
-
ICN
11h 50mnonstop
$908Korean Air
Booking Insights

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 5 days.

The cheapest ticket to Washington from South Korea found in the last 5 days was to Seattle, at $827 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 5 days was $827.

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 October, when tickets cost $427 (return) on average. On the other hand, the most expensive months are January and July, when the average cost of round-trip tickets is $1,019 and $793 respectively.

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

The average price for all round-trip flights from South Korea to Washington depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Washington is generally in the evening, when round-trip flights cost $760 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 $779.

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 1 week before departure. For the absolute cheapest price, our data suggests you should book 9 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 $918.

Good to know

Low season

August

Cheapest flight

$431
Best time to beat the crowds but there is an average 25% increase in price.
Most popular time to fly and prices are also 18% lower on average.
Flight from Busan 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 Monday where round-trip tickets can be as cheap as $721. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are $902 on average.

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 1221 reviews
8.5Boarding
8.3Comfort
8.7Crew
8.2Entertainment
8.1Food
Airline reviews

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.

10.0 ExcellentFiruz, Apr 2026
ICN - LAX
Read more Korean Air reviews

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.

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.

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.

They changed aircrafts and they moved my seats that were already prepaid. I did not get the seats I paid for, so I got expensive seats that I didn't want

I won't hesitate to fly with Korean Air again and agian....if I can get a good deal.

Will try never to fly Delta international again. Flight delayed and staff completely inept in dealing with it. Would not communicate, rude, completely disorganized. Once we reached Seoul the staff there had no idea what to do with us and led us around the airport from one pointless line to another. They were clearly not told how to manage the situation even though they had hours to make a plan. Never again.

lunch was good; breakfast was kinda meh cabin temprature was way too high new entertainment system but somewhat limited content

Going through security a second time to get on the next Korean Air flight was utterly ridiculous and unnecessary. We were in a International secure area.

Spokane airport was easy to get through. Seattle having my arrival and international departure gate so close to each other was fantastic!

I’m not much for Asian food. So did not eat much on the flight

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

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

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

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

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

Very comfortable seats, delicious meals, and friendly and helpful staff

Staff was excellent. Food could use more variety. -More vegetable options. Menu didn't have juice or soda listed. -The croissants were outstanding!

Asian Vegitarian food was test less No Salt or pepper served Need to improve with Chef who can caters for Peaple from India I am sure Chef knows different varieties of food Indian People like

Airfare was ok . Food not good , seat ok but not comfortable. Lay over too long , crew was ok Overall just ok

2 things that really tanked our experience with this trip with Asiana Airline (which used to be among my favorite airlines): 1) The "random" security screening at the boarding gate is crazily thorough (which is completely redundant to the security screening before we went through the security checkpoint before getting into the gate area), and the water was acquired inside of the gate area (from a lounge operated by the Inchon airport). We were asked to take out *EVERY* single items from the carry-on luggage and open up every comtainers / bags / packages to inspect. To add to it, there were two inspection workers there (one seemed to be a trainee and the other seemed to be a trainer), and the trainer worker held a very unfriendly / arrogant attitude towards us. As the youngest member (a minor) of my family was being "screened", the rest of my family wanted to make sure that no inappropriate actions would happen to her. That trainer worker yelled at us and attempted to use rude body language (waving her hands) and facial expression to ask us to stay away. 2) The luggage handling at the destination was really *REALLY* bad. Among my 25+ years of travel experiences, I'm going to have to say that this was the worst luggage experience where we didn't lose our luggage. Our flight was scheduled to land 12:45pm, and landed around 1pm. 15mins delay in landing is absolutely normal. Deplane process took a bit longer than usual flight (we waited for around 20mins, after arriving at the gate, before people were able to actually leave the plane). However, the luggage took another *2 HOURS* to arrive at the baggage claim carousel. This is insane. What's worse is, due to the delay in luggage, the flurry of passengers from our flight collided with 3 other incoming flights. The US border / custom line was like the longest Disneyland attraction line winding through the entire arrival hall and around all the baggage claim carousels (like at least a thousand people). I've never seen anything like that at SeaTec airport (US border control), period. The luggage claim experience really tanked our trust and overall impression for Asiana Airline's Seattle airport ground operational effectiveness and efficiency. This has to change in order for them to remain relevant / in-business with increased competitions from Korean Air and other Asia-based airlines.

It was awful. I will never appreciate this type of connection where i have to wait 12 hours which turned into 18 hours due to Alaska's delays after flying over 15hours already. The 15 hours already made my body suffer as soon as I deplaned. I struggled to breath and was about to faint,but being alone, I tried to hold on my carry on luggage I wasn't able to take it anymore, so I informed the airport people who then assisted me. My husband had to book me a $200 hotel room so I can rest. I stayed for only 4 hours in that expensive hotel in order to catch my 8 in the morning flight to Spokane only for it to be delayed until 2:17. We finally left LAX before 3pm. Alaska was also inconsistent with their gate assignments. Our first gate was 64A, after the delay they sent us an email that the next gate was 68,but the arrival and departure board showed gate 60. When I asked the desk 60 agents, they said it will be gate 61. All these experience contributed to my exhaustion and stress which affected my heart and well being.

Flight canceled. Had to fly in the evening out of lax instead of 10am out of Burbank

Technically this was the flight where they lost my bags, but I already explained that on the review for my connecting flight, so I'm not gonna do it again.

The airline asked for volunteers to check carry ons. I figured I would to make catching my connecting flight on a short layover a little easier. They then lost my bag on the layover. Getting it back was relatively painless, but I'm still not thrilled about it. The first flight also got in fifteen minutes late, changing a 45 minute layover to a 30 minute one. And my second flight took its sweet time after starting the taxi, resulting in the flight being delayed for half an hour. Not a huge deal in the grand scheme, but a little frustrating and especially so when they ended up losing my bags.

I would love it if Alaska Airlines brought back the complimentary beverage service on short flights

the flight was fine, But I paid extra for an Aisle seat both planes and did not get what I paid for when you pay an extra almost $80 and do not get the desired seats it was frustrating I don't fly much because of my legs need more room. thank you for your attention to this

I had called before the flight for vegetarian food. But they did not have it for me.

The plane was very full, and the seats are not very spacious. I was in the middle seat, so it was not super comfortable. I didn't have any experience with the entertainment on board. And food was a Biscoff. Which I realize is just how we do it now, but I definitely miss the days when you could get a breakfast included.

I always have flown Alaska Airlines because I never had an issues. Their customers service is incredible and an amazing communication.

Someone had peed in my seat in the flight before hand. We were rushing to board and fly because our flight was delayed due to a medical emergency on the flight prior in our airplane. My seatbelt was soaked. My seat was dry, but the floor was also wet. It was strange. It smelled awful! I had to be moved and my kids had to sit away from me.

They did everything right and everything happened right on time.

Not really a “Delta” problem but worth mentioning: Boarding was a difficult process. TSA seemed understaffed and Pre-Check took longer than regular TSA. The supervisor was frazzled and yelled at travelers. Once through TSA, we had to put our carry-ons through another x-ray machine. Then queue up to board with both boarding pass and ID. Then, when we got to the stairs on the tarmac, we had to show our boarding pass again. Maybe this is just normal for Kona since the terminal is outdoors (but still a “secured” area).

Checkin was good, fllight ws good. Onlly complaint is lack of foot on 6 hour flight from Seattle to Boston. Snacks were flimsy - chips and cookies. could have offered something more substantial for such a long flight. I know you can buy food in airport but for the price you pay for a ticket, they should step up for the passengers.

Much better than I expected. I had an economy ticket so I was really happy the flight was so comfy and the service so generous. Passengers were all polite too.

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

It was fine. 55 minute flight. No snacks or beverage service offered. Boarding went smoothly and my walker was waiting for me on the jet way.

My flight was cencaled due with the bad weather on Sunday the crew was poorly mistaken my luggage supposed depart with my flight instead I didn’t have my luggage for almost 3 days the website is poorly respond to my complain until I have someone to do it my connection smooth their not even respon or email me even the have my luggage

8 hours late and the plane smelled like urine, that smell in the morning when your child wet the bed in the night.

Everything was good except wifi and a leaking drink chiller. The floor was all wet and my bag was soaked. Did not notice until debarking. Have not heard back from Delta. Even though this was leg one of an international flight in first class, they denied access to their Sky Club - very disappointing!

Check in process was terrible. Lady at counter didn’t know what she was doing

Yall need to integrate your system with Alaska more efficiently. They booted me off the first flight because of a discrepancy on your end.

Unfortunately, I was put into the middle seat in the first row of premium seating. Sounds nice right? No! that is the worst seat in the plane. I wish I was in economy rather than be in that seat! There is no seat back pocket, no tray table, no charger. Nothing! so unless you're row mates are willing to let you share their basic amenities any flyer should have, you are stuck. It was the worst experience ever! And the flight attendant forgot to take my drink order. I felt like the forgotten flyer.

Delayed and cancelled flights were hard and very stressful, both ways!

The flight was CANCELED!!! Can’t get much more “poor” than that. I had to switch to American Airlines, add another layover and got home in Honolulu 4 hours later than I was supposed to be home. One bright spot was Josh with Alaska Airlines at SFO. He got me on a United Flight that got me home a few hours before I would have. Without him I would have gotten home almost 7 hours after my originally scheduled flight.

Canceled my flight within 24 hours, causing me arriving home midnight. Will never book Hawaiian airlines anymore

The entire crew had everything handled and truly worked together. More than once, I saw them hustle down the aisle and back just to serve customers.

The flight was great. But the problem is we actually booked a flight with Hawaiian Airlines. We even received a Hawaiian Airlines confirmation number. So this made it really difficult to check in the online. So I had to call Hawaiian Airlines to get our Alaskan Airlines confirmation code to check in. Also weren’t told we were flying on Alaskan, but once we got on the plane, everything went well!

Agents talk too fast over intercom. I know it’s memorized and we’ve all heard it before. Just slow down a little. Stop charging for checked bags. I was pleased to get my bags promptly at each end of my flight.

It was clean and the crew was great. I wish the chairs could recline just a little more and you would provide small pillows for people with bad backs. My back is fused and a little support would be great.

Boarding was fine, but once on we waited for 45 minutes to take off. This caused me to almost miss my connection. Once the second flight was boarded we waited again for 20-30 minutes to take off.

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.