Cheap flights from Washington to Seoul from $411
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Seoul departing on 7/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Air Canada flights from State of Washington to Incheon Intl Airport
Our best Air Canada deals on State of Washington to Incheon Intl Airport flight tickets
China Airlines flights from State of Washington to Incheon Intl Airport
Our best China Airlines deals on State of Washington to Incheon Intl Airport flight tickets
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How to get the cheapest flight ticket from State of Washington to Incheon Intl Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Incheon Intl Airport?
The cheapest month to fly to Incheon Intl Airport from State of Washington is in February. Flight prices, which tend to average around $971, are often lower during this time because this is during the off-season. If you are unable to visit Incheon Intl Airport during the month of February, then departing from State of Washington during the month April is also very affordable. Most momondo users find prices during this month for around $1,036.
What is the cheapest day to depart on your flight to Incheon Intl Airport?
The cheapest day to depart from State of Washington to Incheon Intl Airport is on a Wednesday when prices can be found for as low as $887. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,034. These prices are subject to change though, so be sure to set up a Price Alert for flights to Incheon Intl Airport.
What is the cheapest time of day to depart on your flight to Incheon Intl Airport?
In the evening is the cheapest time of day to fly from State of Washington to Incheon Intl Airport when you can find flight prices for as low as $835. Flying to Incheon Intl Airport in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,401 on average. Flights to Incheon Intl Airport from State of Washington in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest Washington to Incheon Intl flight route?
Fly from Seattle/Tacoma Intl to Incheon Intl for the best Washington - Incheon Intl flight prices
How far in advance should I book a flight to Incheon Intl Airport?
You are more likely to see cheaper flights to Incheon Intl Airport from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Incheon Intl Airport for around $1,221 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Incheon Intl Airport from State of Washington for as low as $1,059 on momondo.
What cabin class options are available on Washington to Incheon Intl flights?
There are 3 cabin classes available to choose from on Washington to Incheon Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Washington to Incheon Intl?
Air Canada, China Airlines, and WestJet are the most popular carriers operating from Washington to Incheon Intl
What airlines fly to Incheon Intl Airport?
Korean Air, Asiana Airlines and Air Canada are the top three most popular airlines that fly to Incheon Intl Airport from State of Washington according to our data. Korean Air is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Incheon Intl Airport. Keep in mind that there are 10 different airlines that fly to Incheon Intl Airport on a routine basis, so you have a few additional options to choose from.
How many flights depart from State of Washington to Incheon Intl Airport on average per day?
As of June 2025, there are 8 flights per day flying from State of Washington to Incheon Intl Airport. The most common time of day flights depart is 2:00PM, with 100% of flights taking off in the afternoon.
How many flights depart from State of Washington to Incheon Intl Airport on average per week?
The number of flights available between State of Washington and Incheon Intl Airport is 57 per week as of June 2025. The most frequent departure day is Fri, with 16% of weekly flights leaving on this day.
Cheap State of Washington to Incheon Intl Airport flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from State of Washington to Incheon Intl Airport
When did momondo last update prices for flights from Washington to Incheon Intl Airport?
Prices for flights from Washington to Incheon Intl Airport are updated daily.
How many operators does momondo search for flights from Washington to Incheon Intl Airport?
As of June 2025, there are 10 operators available to choose from for flights from Washington to Incheon Intl Airport.
How old do you have to be to fly from Washington to Incheon Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington to Incheon Intl Airport.
What documentation or ID do you need to fly to Incheon Intl Airport?
The travel and health documents you'll need for your trip to Incheon Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Incheon Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from State of Washington to Incheon Intl Airport?
momondo data reveals that the most frequently booked plane model on the route from State of Washington to Incheon Intl Airport is Boeing 787-10 Dreamliner, representing 29.34% of all bookings. The subsequent popular models are Airbus A350-900 at 20.43%, Boeing 787-9 Dreamliner at 16.95%, and Boeing 777-200LR at 16.49%.
Best airlines flying from State of Washington to Incheon Intl Airport
Compare and see reviews for airlines that fly from State of Washington to Incheon Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $167 | Free Cancellation | Rating 8.0 7,962 reviews | |||
| PriceFrom $182 | Free Cancellation | Rating 8.0 10,000 reviews | |||
| PriceFrom $657 | Free Cancellation | Rating 7.4 8,830 reviews | |||
| PriceFrom $763 | Free Cancellation | Rating 7.8 2,517 reviews | |||
| PriceFrom $822 | Free Cancellation | Rating 7.1 9,595 reviews | |||
| PriceFrom $886 | Free Cancellation | Rating 8.3 744 reviews | |||
| PriceFrom $908 | Free Cancellation | Rating 8.2 443 reviews | |||
| PriceFrom $966 | Free Cancellation | Rating 8.4 1,090 reviews | |||
| PriceFrom $970 | Free Cancellation | Rating 7.3 3,867 reviews | |||
| PriceFrom $978 | Free Cancellation | Rating 8.4 1,205 reviews |
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Why should I use momondo to find a flight deal from Washington to Seoul?
Finding the right flight to Seoul from Washington is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seoul quick and easy, saving you time and money.
Can I find flights from Washington to Seoul with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Washington to Seoul flights to just show those with flexible booking policies.
How can momondo help me find flights from Washington to Seoul?
momondo helps you find the best flight between Washington and Seoul by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from Washington to Seoul right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Washington to Seoul now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seoul and let you know when they change.