Cheap flights from Seattle to South Korea from $392
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to South Korea departing on 9/20. 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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How to get the cheapest flight ticket from Seattle to South Korea
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 South Korea?
If you aren’t able to travel to South Korea during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $976.
What is the cheapest day to depart on your flight to South Korea?
On average, the least expensive day to fly to South Korea from Seattle is on a Monday. momondo users have found tickets for Monday departures for as low as $888. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to South Korea for around $1,038.
What is the cheapest time of day to depart on your flight to South Korea?
Flying to South Korea from Seattle in the evening is the least expensive time of day to depart. momondo users have found prices as low as $847 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,401 on average. Flights to South Korea from Seattle in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest Seattle/Tacoma Intl to South Korea flight route?
Fly from Seattle/Tacoma Intl to Incheon Intl for the best Seattle/Tacoma Intl - South Korea flight prices
How far in advance should I book a flight to South Korea?
You are more likely to see cheaper flights to South Korea from Seattle when booking 3 weeks ahead of your departure date. In general, you can expect to find flights to South Korea for around $1,222 when searching 3 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to South Korea from Seattle for as low as $1,061 on momondo.
What cabin class options are available on Seattle/Tacoma Intl to South Korea flights?
There are 3 cabin classes available to choose from on Seattle/Tacoma Intl to South Korea 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 Seattle/Tacoma Intl to South Korea?
WestJet, Air Canada, and Korean Air are the most popular carriers operating from Seattle/Tacoma Intl to South Korea
What airlines fly to South Korea?
Korean Air, Asiana Airlines and Air Canada are the top three most popular airlines that fly to South Korea from Seattle 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 South Korea. Keep in mind that there are 10 different airlines that fly to South Korea on a routine basis, so you have a few additional options to choose from.
How many flights depart from Seattle to South Korea on average per day?
The number of flights available between Seattle and South Korea is 8 per day as of June 2025. The most frequent departure time is 2:00PM, with 100% of daily flights leaving in the afternoon.
How many flights depart from Seattle to South Korea on average per week?
As of June 2025, there are 57 flights per week flying from Seattle to South Korea. The most common day of the week flights depart is Thu, with 16% of flights taking off on this day.
Cheap Seattle to South Korea flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to South Korea
Best Price Found | $392 |
|---|---|
Fastest flight time | 11h 20m |
Direct flights | Every day |
Airports in South Korea | 4 airports |
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to South Korea?
Prices for flights from Seattle/Tacoma Intl Airport to South Korea are refreshed on a daily basis.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to South Korea?
There are 10 operators available for flights from Seattle/Tacoma Intl Airport to South Korea as of June 2025.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to South Korea?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to South Korea.
What documentation or ID do you need to fly to South Korea?
The travel and health documents you'll need for your trip to South Korea 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 South Korea. 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 Seattle to South Korea?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Seattle to South Korea is Boeing 787-10 Dreamliner (29.34% of total bookings). The next most popular plane models are Airbus A350-900 (20.30%), Boeing 787-9 Dreamliner (16.97%), and Boeing 777-200LR (16.58%).
Best airlines flying from Seattle to South Korea
Compare and see reviews for airlines that fly from Seattle to South Korea with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $167 | Free Cancellation | Rating 8.0 7,963 reviews | |||
| PriceFrom $190 | Free Cancellation | Rating 8.0 10,000 reviews | |||
| PriceFrom $657 | Free Cancellation | Rating 7.4 8,801 reviews | |||
| PriceFrom $698 | Free Cancellation | Rating 7.8 2,501 reviews | |||
| PriceFrom $815 | Free Cancellation | Rating 7.1 9,554 reviews | |||
| PriceFrom $835 | Free Cancellation | Rating 8.3 742 reviews | |||
| PriceFrom $909 | Free Cancellation | Rating 8.2 441 reviews | |||
| PriceFrom $966 | Free Cancellation | Rating 8.4 1,090 reviews | |||
| PriceFrom $970 | Free Cancellation | Rating 7.3 3,852 reviews | |||
| PriceFrom $978 | Free Cancellation | Rating 8.4 1,204 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Seattle to South Korea?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to South Korea for you.
Can I find flights from Seattle to South Korea with flexible booking policies on momondo?
All flight searches from Seattle to South Korea on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Seattle to South Korea?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to South Korea.
I’m not ready to book a flight from Seattle to South Korea right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Seattle to South Korea now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to South Korea and let you know when they change.