Find cheap flights from Seattle to Seoul

We've found these cheap flights for you. You can book one-way or round-trip flight tickets.

Round-trip
One way

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

When is the cheapest time to book flights from Seattle to Seoul?

We monitor flight fares to help you find the best deals effortlessly

Cheapest flights

From price

23 30
Apr

30 6
6 13
13 20
20 27
May

27 4
4 11
11 18
18 25
Jun

25 1
1 8
8 15

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

When are flight tickets from Seattle (SEA) to Seoul (SEL) the cheapest?

Airlines adjust prices for flights from Seattle to Seoul based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
How much do flights from Seattle (SEA) to Seoul (SEL) cost?

According to Trip.com's data, the lowest price is around $1,356.
How long does it take to fly from Seattle (SEA) to Seoul (SEL) and what is the distance?

It takes around 11 hours 33 minutes to fly from Seattle (SEA) to Seoul (SEL).
What is the transportation method from the main airport to downtown in Seoul?
- The distance from Incheon Intl. Airport to downtown is about 48 km. It takes about 1 hour by taxi.
- The distance from Gimpo Intl. Airport to downtown is about 15 km. It takes about 30 minutes by taxi.
What are the most popular airlines that fly from Seattle (SEA) to Seoul (SEL)?

Airlines with flights from Seattle (SEA) to Seoul (SEL): United Airlines, Delta Air Lines, Thai Airways, Etihad Airways, Singapore Airlines, Korean Air and Asiana Airlines.

How to find a cheap flight from Seattle to Seoul

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Seattle to Seoul. Book your flights at the right time and save more.

Being flexible with your dates to get the cheapest Seattle to Seoul ticket.

Tap "Date" on flight search bar to scan through the calender for Seattle to Seoul airfare over next 6 months in 2025. If you would like to fly in next 3 months, it seems the cheapest date is on Mon, Apr 14 at US$551 for one-way flights.

Compare cheap Seattle to Seoul flight deals from over hundreds of airlines.

Our extensive search allows you to compare prices from over 500 airlines to choose the cheapest flight tickets from Seattle to Seoul. The cheapest airline operating is Korean Air.

Set up a Price Alert

By setting up a Price Alert for your Seattle to Seoul route, you can easily track the price of your airline tickets from Seattle to Seoul without manually checking every day.

Don't miss cheap Seattle to Seoul flight deals and promo codes.

You can always get the latest deals through Trip.com Deals and Promo Codes for cheap flights for cheap flights. If registering a free membership, you can receive more deals for your flights.

Book early or wait unitl the last minute.

It's always better to book early. Flight tickets tend to be the cheapest when they are first released, normally about a year before the departure date. So, check online as soon as the flights you want become available. If you miss the cheapest time, you can still find lower-priced tickets as the flight date approaches.

Search for flights on the go.

To get the best flight booking experience on the go, download Trip.com free app and search for cheap flight tickets from Seattle to Seoul to get exclusive deals for you.

Seattle to Seoul Flight Information

Cheapest one-way flight price	$433
Cheapest round-trip ticket price	$958
Off-season for travel	February
Peak season for travel	December
Flight distance	8,341.99 km
Average flight time	11 hours 33 minutes
Popular airline	Alaska Airlines