Q: What is the typical price of a round-trip flight between Seoul and Seattle?

Prices are currently low for flights on this route. Typical prices usually range from $711 to $1,337. The lowest price recently found on this route was $477.

Question 1

What airlines fly to Seattle?

Accepted Answer

Asiana Airlines, Korean Air and Delta are the top three most popular airlines that fly to Seattle from Seoul according to our data. Asiana Airlines is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 5 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

Question 2

Can stopping save me money on Seoul to Seattle flights?

Accepted Answer

No. A direct flight is the cheapest option for a flight between Seoul to Seattle.

Question 3

How long does it take to fly to Seattle?

Accepted Answer

Flight times vary depending on what airport in Seoul you fly out of and what airport in Seattle you fly into. For example, flying from Incheon to Seattle takes 9h 50m on average. On the other hand, flying from Seoul to Seattle takes 17h 45m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

Question 4

What is the cheapest day to depart on your flight to Seattle?

Accepted Answer

On average, the least expensive day to fly to Seattle from Seoul is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $876. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Seoul because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,132.

Question 5

How far in advance should I book a flight to Seattle?

Accepted Answer

You are more likely to see cheaper flights to Seattle from Seoul when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $850 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Seoul for as low as $727 on momondo.

Question 6

How many flights depart from Seoul to Seattle on average per day?

Accepted Answer

As of July 2025, there are 7 flights per day flying from Seoul to Seattle. The most common time of day flights depart is 6:00PM, with 77% of flights taking off in the evening.

Question 7

What is the cheapest Seoul to Seattle/Tacoma Intl flight route?

Accepted Answer

Fly from Incheon Intl to Seattle/Tacoma Intl for the best Seoul - Seattle/Tacoma Intl flight prices

Question 8

What is the typical price of a round-trip flight between Seoul and Seattle?

Accepted Answer

Prices are currently low for flights on this route.Typical prices usually range from $711 to $1,337.
The lowest price recently found on this route was $477.

Question 9

What is the cheapest airline that flies from Seoul to Seattle/Tacoma Intl?

Accepted Answer

WestJet and Hainan Airlines are the most popular carriers operating from Seoul to Seattle/Tacoma Intl

Question 10

What is the cheapest time of day to depart on your flight to Seattle?

Accepted Answer

Flying to Seattle from Seoul in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $888 when looking at flights departing in the afternoon. Flights to Seattle are more costly in the evening, with an average ticket price of $1,041. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

Question 11

What cabin class options are available on Seoul to Seattle/Tacoma Intl flights?

Accepted Answer

There are 4 cabin classes available to choose from on Seoul to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Question 12

What is the cheapest month to fly to Seattle?

Accepted Answer

In general, May is the cheapest month to fly from Seoul to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $665. If you don’t want to visit Seattle in May, then you should wait until June to fly from Seoul, when ticket prices are also cheap, with an average price of $666.

Question 13

How have Seoul to Seattle flight prices changed over time?

Accepted Answer

As of July 2025, prices for Seoul to Seattle flights are approximately 37% cheaper when compared to flights at the same time last year.

Question 14

How many flights depart from Seoul to Seattle on average per week?

Accepted Answer

The number of flights available between Seoul and Seattle is 50 per week as of July 2025. The most frequent departure day is Wed, with 16% of weekly flights leaving on this day.

Question 15

When did momondo last update prices for flights from Seoul to Seattle/Tacoma Intl Airport?

Accepted Answer

Prices for flights from Seoul to Seattle/Tacoma Intl Airport refresh daily.

Question 16

How many operators does momondo search for flights from Seoul to Seattle/Tacoma Intl Airport?

Accepted Answer

As of July 2025, there are 5 operators available to choose from for flights from Seoul to Seattle/Tacoma Intl Airport.

Question 17

How old do you have to be to fly from Seoul to Seattle/Tacoma Intl Airport?

Accepted Answer

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seoul to Seattle/Tacoma Intl Airport.

Question 18

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

Accepted Answer

The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best Price Found	$391
Fastest flight time	9h 50m
Direct flights	Every day
Airports in Seattle	1 airport

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom $474	Free Cancellation	Rating 7.1 9,695 reviews	Search Air Canada flights
United Airlines	PriceFrom $516	Free Cancellation	Rating 7.4 8,846 reviews	Search United Airlines flights
Korean Air	PriceFrom $518	Free Cancellation	Rating 8.4 1,105 reviews	Search Korean Air flights
Asiana Airlines	PriceFrom $542	Free Cancellation	Rating 8.2 454 reviews	Search Asiana Airlines flights
Delta	PriceFrom $643	Free Cancellation	Rating 8.0 7,951 reviews	Search Delta flights

Cheap flights from Seoul to Seattle from $391

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seoul to Seattle departing on 10/9. 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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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 typical price of a round-trip flight between Seoul and Seattle?

What is the cheapest month to fly to Seattle?

What is the cheapest day to depart on your flight to Seattle?

What is the cheapest time of day to depart on your flight to Seattle?

What is the cheapest Seoul to Seattle/Tacoma Intl flight route?

Fly from Incheon Intl to Seattle/Tacoma Intl for the best Seoul - Seattle/Tacoma Intl flight prices

How far in advance should I book a flight to Seattle?

What cabin class options are available on Seoul to Seattle/Tacoma Intl flights?

There are 4 cabin classes available to choose from on Seoul to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seoul to Seattle flights?

No. A direct flight is the cheapest option for a flight between Seoul to Seattle.

How have Seoul to Seattle flight prices changed over time?

As of July 2025, prices for Seoul to Seattle flights are approximately 37% cheaper when compared to flights at the same time last year.

What is the cheapest airline that flies from Seoul to Seattle/Tacoma Intl?

WestJet and Hainan Airlines are the most popular carriers operating from Seoul to Seattle/Tacoma Intl

What airlines fly to Seattle?

How many flights depart from Seoul to Seattle on average per day?

As of July 2025, there are 7 flights per day flying from Seoul to Seattle. The most common time of day flights depart is 6:00PM, with 77% of flights taking off in the evening.

How many flights depart from Seoul to Seattle on average per week?

The number of flights available between Seoul and Seattle is 50 per week as of July 2025. The most frequent departure day is Wed, with 16% of weekly flights leaving on this day.

How long does it take to fly to Seattle?

When to book flights from Seoul to Seattle

Cheap Seoul to Seattle (SEL to SEA) flight deals and tips

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How far is Seoul to Seattle/Tacoma Intl by plane?

When did momondo last update prices for flights from Seoul to Seattle/Tacoma Intl Airport?

How many operators does momondo search for flights from Seoul to Seattle/Tacoma Intl Airport?

How old do you have to be to fly from Seoul to Seattle/Tacoma Intl Airport?

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

What is the most popular plane model from Seoul to Seattle?

What is the most popular airline from Seoul to Seattle?

Best airlines flying from Seoul to Seattle

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Korean Air Flights From Seoul to Seattle

Asiana Airlines Flights From Seoul to Seattle

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