$408 Find Cheap Flights from Incheon to Washington - Compare and Save

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Cheap Flights from Incheon to Washington

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Seattle
Seattle1 stop$846
Spokane
Spokane1 stop$1,152
Seattle
Seattle1 stop$846
Spokane
Spokane1 stop$1,152
Booking Insights

KAYAK's insights & trends for Incheon to Washington flights

Get data-powered insights and trends into flights from Incheon to Washington 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 State of Washington?

Flight prices are typical for this route right now.

Flights to State of Washington from Incheon Intl Airport usually cost between $522 and $972 in December.
The lowest price found in the past 5 days was $846 on Multiple Airlines (Dec 23-Jan 6).

What is the cheapest Incheon Intl Airport to Washington flight route?

The cheapest ticket to Washington from Incheon Intl Airport found in the last 5 days was to Seattle, at $1,000 round-trip. The most popular route is from Incheon Intl Airport (ICN) to Seattle (SEA), and the cheapest round-trip airline ticket found on this route in the last 5 days was $1,000.

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

The cheapest time of day to fly to Washington is generally at night, when round-trip flights cost $889 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to Washington is generally in the evening, which is peak travel time and where the average cost of a ticket is $1,059.

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

No, with an average price for the route of $1,023, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Incheon Intl Airport to Washington?

The cheapest month for flights from Incheon Intl Airport to Washington is November, when tickets cost $618 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $1,104 and $992 respectively.

What’s the cheapest day of the week to fly from Incheon to Washington?

When flying from Incheon to Washington, you should consider leaving on a Monday and avoid Saturdays if you are looking for the best rates. For your return to Incheon, you’ll find the best rates on Wednesdays and the most expensive ones on Fridays.

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

To get a below average price on the flight from Incheon Intl Airport to Washington, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low season

September

Cheapest flight

$408
Best time to beat the crowds but there is an average 12% increase in price.
Most popular time to fly with an average 5% increase in price.
Flight from Incheon to Seattle

FAQs - booking Washington flights

  • How does KAYAK find such low prices on flights from Incheon 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 Incheon to Washington.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Incheon 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 Incheon 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 Incheon 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 Incheon 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 Incheon to Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Washington

  • Looking for a cheap flight? 25% of our users found tickets from Incheon to the following destinations at these prices or less: Seattle $606 one-way - $1,023 round-trip

Reviews of the top 4 airlines serving from Incheon to Washington

 
Need help choosing which airline to fly with from Incheon 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 1219 reviews
8.2Entertainment
8.7Crew
8.1Food
8.3Comfort
8.5Boarding
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
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.

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

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

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.

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.

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.

The back of the plane use to board first after handicap with children and first class. Now the back boards last and there’s a long line waiting to go back while everyone is putting their luggage up and standing in aisle just talking. It’s hard on the elderly. I’m elderly.

Crew was fine.at check out I didn't get my debit card back.and didn't know until I was in Seattle. There was a 5.5hour delay. I didn't get to Washington til 530this morning. So now I have to get a new card and change alot of stuff.

For the third flight I’ve taken on Alaska this year there were delays. It’s become almost a gamble and hope for the best especially catching the late flight out of Kalispel to Seattle. Don’t even get me started on the flight out of Seattle to Sacramento. I will try another airline whenever possible moving forward.

Like to get onward pass from Alaska airlines and Cathay Pacific more seamless. As the online check-in procedure you sent didn't work and I have to get to the airport really early to check-in with counter.

I was a late add on to this flight because my previously booked flight was delayed, which would have made me late for my connecting flight. I was given the last seat on the plane which isn’t a huge deal but the seat had lots of dust and black mold looking growth along the air vents, making me uncomfortable with using it for the 6 hour flight. There was a gross fecal matter looking stain on the edge of the window in front of me. I paid for the WiFi, which did not work for the most of the flight.

The flight itself was good but I am not a fan of a lot of people and so much sensory I couldn't take that part. My brain went into rescue mode cause there was to much going on. I am to interverted to out here peopling. I like the emergency section but when I feel like I am trapped cause there are people next to me I almost wanted to jump out to be honest. I didn't obviously but I now know what all I can handle and what not. Thank you for hearing me out. If there are better times for people with sensory issues and having borderline personality and anxiety issues please let me know

This was the worst flight of my life. I was placed in 33D which should not even be considered a seat. If anything it should be a heavily discounted seat. Aside from the usual more tolerable issues (no leg room, delays, poor snacks, the air vent smelling moldy, etc), this location was plagued by being placed directly in front of the bathroom door with all of the fun smells and sounds. The worst part was that there was a dozen available seats on this flight and was unable to moved my seat to any of them. I find it unbelievable that this seat was first assigned over any of those. Very disappointing.

Alaska Airlines has great customer service. I would like the Alaska lounge to improve with food options.

No free internet, lazy flight attendants that did not like to serve drinks. Blamed it on turbulence but there was not any.

Boarding was so bad in Seoul! Food was just junk!

Rude staff from baggage check to gate crew. Poor instructions. Inconsistent application of baggage rules.

more room in seats, larger snacks, more comms with delays

The plane was a rather tired 737-800, with old style small luggage bins. Poor air flow. USB charger in the infotainment system was not functioning. The flight was 2 hours late due to crew rest requirements (not their fault). On arrival in Seattle, waited on the tarmac for 30 minutes with very few updates from the crew.

One of the restrooms didn’t work. The ones that did never got replenished. Flight attendant just sitting there on their phone. No notification that the bathroom was broken so long lines. Apathetic crew.

I am in a wheelchair The gate agent knew exactly how to boarding A wheelchair first also the flight attendant knew exactly what she was doing

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).

One of the best airlines that I flew on, the flight attendants were very attentive and professional.

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

They boarded very early. We rushed to transfer and got to the gate 5 minutes after boarding was scheduled to start, however they were making a last call and holding signs for “all customers” to board. They were helpful at the gate, but I was surprised to see that we were some of the last to board at 5 minutes after scheduled boarding was to begin.

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