How popular is this Incheon Intl Airport to Seattle flight route?

This flight path from Incheon Intl to Seattle/Tacoma Intl was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

What are the cheapest airlines flying from Incheon Intl Airport to Seattle round-trip?

Flying on Korean Air is currently your cheapest option to Seattle, with prices starting at $447. Additional round-trip tickets that might be worth considering are offered by United Airlines and Asiana Airlines, with the lowest prices starting at $476 and $506, respectively. Korean Air is priced at 52% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest airlines to fly from Incheon Intl Airport to Seattle one-way?

The cheapest airline one-way is Hainan Airlines, with whom users have recently found tickets for as low as $404. However, be on the lookout for offers from WestJet and Korean Air, as they are both options that can get you from Incheon Intl Airport to Seattle for a low price.

What is the cheapest day to fly from Incheon Intl Airport to Seattle?

Travelers seeking maximum savings on their Incheon Intl Airport to Seattle flight should consider departing on Thursday afternoons when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the cheapest flights from Incheon Intl Airport to Seattle?

Looking for the cheapest flight from Incheon Intl Airport to Seattle? While on average our users pay $1,413, our data indicates the cheapest price to be $500. The most popular route (Incheon Intl - Seattle/Tacoma Intl), is priced around $445.

What are the most reliable airlines from Incheon Intl Airport to Seattle?

Before booking your flight to Seattle from Incheon Intl Airport, check out the most reliable airlines to get you to your destination on time: Delta (57%), Korean Air (57%), Etihad Airways( 31%).

What are the most popular airlines that fly from Incheon Intl Airport to Seattle?

Consider American Airlines, Air Canada or Delta when booking your flight. These represent the most popular airlines when flying from Incheon Intl Airport to Seattle.

What is the cheapest day to fly round-trip from Incheon Intl Airport to Seattle?

Flights from Incheon Intl Airport to Seattle are found to be more expensive on Saturday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Seattle.

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

Travelers have found it’s best to book a flight 35 days in advance to save up to 65% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 35 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Incheon Intl Airport to Seattle 1-2 weeks in advance for as low as $550, or $1,107 for flights within the next 24 hours.

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

March is one of the best times of the year to fly to Seattle from Incheon Intl Airport. Prices for March average $905 per person but you can even find prices for as low as $377. The most expensive prices can be found in the month of July. Opting for a March flight can save you 45% on your journey compared to booking in July

Most accurate provider : When it comes to deals on Incheon Intl Airport-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Incheon Intl Airport-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Incheon Intl Airport-Seattle flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Incheon Intl Airport-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Incheon Intl Airport-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly into for flights to Seattle from Incheon Intl?

Located just 11.4 mi from the city center, Seattle/Tacoma Intl is the airport most travelers will use when flying to Seattle from Incheon Intl. Booking flights from Incheon Intl to Seattle/Tacoma Intl (SEA) should be relatively easy as there are 7 daily inbound flights from Incheon Intl from 6 different airlines.

Can I find deals for flights from Incheon Intl to Seattle that include hotel bookings?

Yes. In addition to deals on Incheon Intl to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Incheon Intl to Seattle?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Incheon Intl to Seattle.

Can I find deals for business class flights from Incheon Intl to Seattle?

Yes. Cheapflights offers flight deals from Incheon Intl to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$325+ Flights from Incheon Intl Airport to Seattle

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Find cheap flights from Incheon Intl to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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Cheapflights Tip: The best prices from Incheon Intl to Seattle/Tacoma Intl are usually found in April or March, booked 76 days in advance, depart on a Tuesday or Thursday and return on a Monday

Cheap flight deals from Incheon Intl to Seattle

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$447 (WhyPayMore)
One-way from	$325 (Kiwi.com)
Popular in	August
Cheapest in	April
Average price	$681
Good round-trip deal	$743 or less
Good one-way deal	$608 or less

Provider with most accurate pricing for Incheon Intl-Seattle/Tacoma Intl flight deals.

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Provider most trusted by Cheapflights users for Incheon Intl-Seattle/Tacoma Intl flights.

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From Incheon Intl to Seattle/Tacoma Intl

Search Deals

One-way flight from Incheon Intl to Seattle/Tacoma Intl

Search Deals

Highest demand for flights based on searches. 24% potential increase in price ($309 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease ($46 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Price to beat on a round-trip flight from Incheon Intl to Seattle/Tacoma Intl.

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Price to beat on a one-way flight from Incheon Intl to Seattle/Tacoma Intl.

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Find flight deals from Incheon Intl to Seattle

Cheapest flights from Incheon Intl to Seattle
Explore the most affordable flight options available from Incheon Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 11, 2025.

lun. 9/155:45 pmICN - SEA

1 stop12h 31mAir Canada

vie. 9/1910:00 amSEA - ICN

1 stop14h 05mAir Canada

Deal found 4/9

$441

jue. 5/227:20 pmICN - SEA

Nonstop10h 15mKorean Air

vie. 7/251:20 pmSEA - ICN

Nonstop11h 20mKorean Air

Deal found 4/10

$447

vie. 4/1111:30 amICN - SEA

1 stop18h 48mUnited Airlines

dom. 4/205:15 amSEA - ICN

1 stop17h 45mUnited Airlines

Deal found 4/9

$473

vie. 4/117:20 pmICN - SEA

Nonstop10h 10mDelta

mié. 4/1612:40 pmSEA - ICN

Nonstop11h 50mDelta

Deal found 4/9

$481

lun. 5/196:20 pmICN - SEA

Nonstop10h 10mAsiana Airlines

vie. 5/302:15 pmSEA - ICN

Nonstop11h 40mAsiana Airlines

Deal found 4/10

$506

mar. 9/2310:40 amICN - SEA

2 stops19h 36mMultiple Airlines

mar. 10/75:45 amSEA - ICN

1 stop18h 20mMultiple Airlines

Deal found 4/10

$585

lun. 5/199:25 pmICN - SEA

1 stop24h 50mHawaiian Airlines

vie. 5/308:25 amSEA - ICN

1 stop18h 35mHawaiian Airlines

Deal found 4/10

$768

Best flights from Incheon Intl to Seattle
Discover carefully curated flight deals from Incheon Intl to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated abril 11, 2025.

jue. 5/227:20 pmICN - SEA

Nonstop10h 15mKorean Air

vie. 7/251:20 pmSEA - ICN

Nonstop11h 20mKorean Air

Deal found 4/10

$447

vie. 4/1811:30 amICN - SEA

2 stops27h 30mUnited Airlines

mié. 4/233:24 pmSEA - ICN

1 stop31h 36mUnited Airlines

Deal found 4/10

$476

lun. 5/196:20 pmICN - SEA

Nonstop10h 10mAsiana Airlines

vie. 5/302:15 pmSEA - ICN

Nonstop11h 40mAsiana Airlines

Deal found 4/10

$506

mié. 5/75:45 pmICN - SEA

1 stop20h 28mAir Canada

dom. 5/117:15 pmSEA - ICN

1 stop28h 50mAir Canada

Deal found 4/10

$507

jue. 4/244:00 pmICN - SEA

1 stop23h 04mDelta

dom. 4/2712:40 pmSEA - ICN

Nonstop11h 50mDelta

Deal found 4/10

$573

lun. 4/1410:40 amICN - SEA

2 stops19h 43mMultiple Airlines

mié. 5/72:55 pmSEA - ICN

1 stop33h 10mMultiple Airlines

Deal found 4/10

$585

lun. 5/199:25 pmICN - SEA

1 stop24h 50mHawaiian Airlines

vie. 5/308:25 amSEA - ICN

1 stop18h 35mHawaiian Airlines

Deal found 4/10

$768

jue. 5/2212:00 pmICN - SEA

1 stop22h 50mEVA Air

jue. 7/242:10 amSEA - ICN

1 stop16h 50mEVA Air

Deal found 4/10

$834

Last-minute flights from Incheon Intl to Seattle
Discover last-minute flight deals from Incheon Intl to Seattle. Data last updated abril 11, 2025 and is based on user searches.

vie. 4/1111:30 amICN - SEA

1 stop18h 48mUnited Airlines

dom. 4/205:15 amSEA - ICN

1 stop17h 45mUnited Airlines

Deal found 4/9

$473

vie. 4/117:20 pmICN - SEA

Nonstop10h 10mDelta

mié. 4/1612:40 pmSEA - ICN

Nonstop11h 50mDelta

Deal found 4/9

$481

lun. 4/1410:40 amICN - SEA

2 stops19h 43mMultiple Airlines

mié. 5/72:55 pmSEA - ICN

1 stop33h 10mMultiple Airlines

Deal found 4/10

$585

mié. 4/167:20 pmICN - SEA

Nonstop10h 10mKorean Air

mié. 4/3012:40 pmSEA - ICN

Nonstop11h 50mKorean Air

Deal found 4/10

$472

mié. 4/166:20 pmICN - SEA

Nonstop10h 10mAsiana Airlines

vie. 5/92:15 pmSEA - ICN

Nonstop11h 40mAsiana Airlines

Deal found 4/10

$600

mié. 4/166:20 pmICN - SEA

Nonstop10h 10mMultiple Airlines

vie. 5/91:40 pmSEA - ICN

1 stop22h 50mMultiple Airlines

Deal found 4/10

$770

mié. 4/161:20 amICN - SEA

1 stop27h 25mQatar Airways

jue. 4/2411:20 amSEA - ICN

2 stops37h 45mQatar Airways

Deal found 4/9

$1,796

mié. 4/165:25 pmICN - SEA

2 stops32h 50mAmerican Airlines

jue. 5/81:10 amSEA - ICN

1 stop22h 20mAmerican Airlines

Deal found 4/10

$2,118

jue. 4/174:00 pmICN - SEA

1 stop16h 07mDelta

jue. 4/2412:40 pmSEA - ICN

Nonstop11h 50mDelta

Deal found 4/9

$587

jue. 4/175:45 pmICN - SEA

1 stop12h 38mAir Canada

jue. 5/292:55 pmSEA - ICN

1 stop33h 10mAir Canada

Deal found 4/10

$850

jue. 4/177:45 pmICN - SEA

1 stop15h 05mEVA Air

mié. 4/231:30 amSEA - ICN

1 stop25h 15mEVA Air

Deal found 4/9

$949

vie. 4/1811:30 amICN - SEA

2 stops27h 30mUnited Airlines

mié. 4/2312:54 pmSEA - ICN

2 stops23h 26mUnited Airlines

Deal found 4/10

$476

One-way flights from Incheon Intl to Seattle
Search for one-way flight options from Incheon Intl to Seattle. Find affordable one-way fares based on user searches. Data last updated abril 11, 2025.

lun. 5/126:20 pmICN - SEA

2 stops45h 50mMultiple Airlines

Deal found 4/10

$325

mié. 5/2110:35 pmICN - SEA

2 stops26h 25mHainan Airlines

Deal found 4/10

$404

jue. 6/58:45 pmICN - SEA

1 stop15h 43mWestJet

Deal found 4/10

$409

jue. 5/84:40 pmICN - SEA

Nonstop10h 00mKorean Air

Deal found 4/10

$469

mié. 6/115:45 pmICN - SEA

1 stop16h 48mAir Canada

Deal found 4/10

$512

lun. 6/1612:00 pmICN - SEA

1 stop22h 50mEVA Air

Deal found 4/10

$521

dom. 6/88:35 pmICN - SEA

1 stop14h 55mChina Airlines

Deal found 4/10

$542

mié. 4/239:25 pmICN - SEA

1 stop16h 30mHawaiian Airlines

Deal found 4/10

$585

jue. 5/86:20 pmICN - SEA

Nonstop10h 10mAsiana Airlines

Deal found 4/10

$588

mié. 4/239:25 pmICN - SEA

1 stop18h 19mAlaska Airlines

Deal found 4/9

$604

vie. 4/1811:30 amICN - SEA

1 stop16h 19mUnited Airlines

Deal found 4/10

$627

Cheapflights Fare Finder

Use the filters below to find and compare flights from Incheon Intl Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

lun. 9/15

5:45 pm-2:16 pm

1 stop12h 31m

Seattle/Tacoma Intl

vie. 9/19

10:00 am-4:05 pm

1 stop14h 05m

$441

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

jue. 5/22

7:20 pm-1:35 pm

Nonstop10h 15m

Seattle/Tacoma Intl

vie. 7/25

1:20 pm-4:40 pm

Nonstop11h 20m

$447

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

lun. 5/19

6:20 pm-12:30 pm

Nonstop10h 10m

Seattle/Tacoma Intl

vie. 5/30

2:15 pm-5:55 pm

Nonstop11h 40m

$506

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

mié. 6/4

11:30 am-9:58 pm

2 stops26h 28m

Seattle/Tacoma Intl

mar. 7/8

6:45 am-4:20 am

2 stops29h 35m

$544

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

jue. 5/22

4:40 pm-10:40 am

Nonstop10h 00m

Seattle/Tacoma Intl

vie. 7/25

6:15 am-5:20 pm

1 stop19h 05m

$567

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

mar. 9/23

10:40 am-2:16 pm

2 stops19h 36m

Seattle/Tacoma Intl

mar. 10/7

5:45 am-4:05 pm

1 stop18h 20m

$585

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

lun. 5/19

9:25 pm-6:15 am

1 stop24h 50m

Seattle/Tacoma Intl

vie. 5/30

8:25 am-7:00 pm

1 stop18h 35m

$768

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

lun. 5/12

6:20 pm-12:10 am

2 stops45h 50m

$325

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

mié. 5/21

10:35 pm-9:00 am

2 stops26h 25m

$404

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

jue. 6/5

8:45 pm-8:28 pm

1 stop15h 43m

$409

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/10

Showing 1-10 of 18 results

Compare providers for flights from Incheon Intl to Seattle

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Incheon Intl to Seattle in April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Incheon Intl Airport-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Incheon Intl Airport-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Incheon Intl Airport-Seattle flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Incheon Intl Airport-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Incheon Intl Airport-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

The best insider tips for Incheon Intl Airport to Seattle flights

Cheapflights partnered with top experts to bring you the best recommendations for your Incheon Intl Airport to Seattle trip

Airports

ICN

Plan for extra time at ICN as security lines can take up to 20 minutes, especially without fast track options.

SEA

Use the Link light rail from SEA to downtown Seattle for an affordable, 40-minute journey with ample luggage space.

Our travel experts

Gabriel Leigh

Expert on ICN

Brandon Schultz

Expert on SEA

Best time to book a flight from Incheon Intl to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Incheon Intl with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Incheon Intl Airport to Seattle

How far ahead should I book a flight from Incheon Intl Airport to Seattle?

To ensure you get the cheapest price possible for a flight from Incheon Intl Airport to Seattle, you should look to book at least 76 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Incheon Intl Airport to Seattle?

Currently, January is the cheapest month in which you can book a flight from Incheon Intl Airport to Seattle (average of $238). Flying from Incheon Intl Airport to Seattle in July is currently the most expensive (average of $411). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ICN to SEA?

One of the essential ways to save on airfare from Incheon Intl Airport to Seattle is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at noon could potentially save you up to 19% on airfare.

Weekly flight availability from Incheon Intl Airport to Seattle

The most flights from ICN to SEA are scheduled on a Wednesday (9 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (5 on average).

Rainfall in Seattle by month

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Seattle

Read reviews from past customers who have flown EVA Air, Korean Air and China Airlines from Seoul to Seattle. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

EVA Air

8.4

Very good

1,172 reviews

Reviews

1 / 20

10.0

Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

EVA Air

8.4

Very good

1,172 reviews

EVA Air

8.4

Very good

1,172 reviews

Reviews

1 / 20

10.0

Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

Korean Air

8.4

Very good

1,060 reviews

EVA Air

8.4

Very good

1,172 reviews

Reviews

1 / 20

10.0

Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

China Airlines

8.2

Very good

729 reviews

EVA Air

8.4

Very good

1,172 reviews

Reviews

1 / 20

10.0

Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

Asiana Airlines

8.2

Very good

438 reviews

EVA Air

8.4

Very good

1,172 reviews

Reviews

1 / 20

10.0

Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

Hainan Airlines

8.1

Very good

37 reviews

EVA Air

8.4

Very good

1,172 reviews

Reviews

1 / 20

10.0

Excellent

Piotr,Feb 2025

TPE - ORD

It is always a pleasure to travel with EVA Air.

Related info for your journey

What airport do you fly into for flights to Seattle from Incheon Intl?
Located just 11.4 mi from the city center, Seattle/Tacoma Intl is the airport most travelers will use when flying to Seattle from Incheon Intl. Booking flights from Incheon Intl to Seattle/Tacoma Intl (SEA) should be relatively easy as there are 7 daily inbound flights from Incheon Intl from 6 different airlines.
How popular is this Incheon Intl Airport to Seattle flight route?
This flight path from Incheon Intl to Seattle/Tacoma Intl was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
What are the cheapest airlines flying from Incheon Intl Airport to Seattle round-trip?
Flying on Korean Air is currently your cheapest option to Seattle, with prices starting at $447. Additional round-trip tickets that might be worth considering are offered by United Airlines and Asiana Airlines, with the lowest prices starting at $476 and $506, respectively. Korean Air is priced at 52% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from Incheon Intl Airport to Seattle one-way?
The cheapest airline one-way is Hainan Airlines, with whom users have recently found tickets for as low as $404. However, be on the lookout for offers from WestJet and Korean Air, as they are both options that can get you from Incheon Intl Airport to Seattle for a low price.
What are the most reliable airlines from Incheon Intl Airport to Seattle?
Before booking your flight to Seattle from Incheon Intl Airport, check out the most reliable airlines to get you to your destination on time: Delta (57%), Korean Air (57%), Etihad Airways( 31%).
What are the cheapest flights from Incheon Intl Airport to Seattle?
Looking for the cheapest flight from Incheon Intl Airport to Seattle? While on average our users pay $1,413, our data indicates the cheapest price to be $500. The most popular route (Incheon Intl - Seattle/Tacoma Intl), is priced around $445.
Can I find deals for flights from Incheon Intl to Seattle that include hotel bookings?
Yes. In addition to deals on Incheon Intl to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Incheon Intl to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Incheon Intl to Seattle.
Can I find deals for business class flights from Incheon Intl to Seattle?
Yes. Cheapflights offers flight deals from Incheon Intl to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Incheon Intl Airport to Seattle?
Currently, January is the cheapest month in which you can book a flight from Incheon Intl Airport to Seattle (average of $238). Flying from Incheon Intl Airport to Seattle in July is currently the most expensive (average of $411). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Other flights to Seattle

Top 6 airlines flying from Incheon Intl to Seattle

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$516	Average$866	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$538	Average$718	FlexibilityNo cancel fee	On-time71%
Air Canada	Cheapest$595	Average$779	FlexibilityNo cancel fee	On-time67%
Asiana Airlines	Cheapest$642	Average$996	FlexibilityNo cancel fee	On-time76%
Delta	Cheapest$667	Average$1,115	FlexibilityNo cancel fee	On-timeN/A
Korean Air	Cheapest$677	Average$1,160	FlexibilityNo cancel fee	On-time81%

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$325+ Cheap flights from Incheon Intl (ICN) to Seattle (SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/12. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Incheon Intl to Seattle with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Incheon Intl to Seattle/Tacoma Intl are usually found in April or March, booked 76 days in advance, depart on a Tuesday or Thursday and return on a Monday

Cheap flight deals from Incheon Intl to Seattle

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Incheon Intl to Seattle

Cheapest flights from Incheon Intl to SeattleExplore the most affordable flight options available from Incheon Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 11, 2025.

Explore the most affordable flight options available from Incheon Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 11, 2025.

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Use the filters below to find and compare flights from Incheon Intl Airport to Seattle that are best for you.

Compare providers for flights from Incheon Intl to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Incheon Intl to Seattle in April.

The best insider tips for Incheon Intl Airport to Seattle flights

Cheapflights partnered with top experts to bring you the best recommendations for your Incheon Intl Airport to Seattle trip

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Best time to book a flight from Incheon Intl to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Incheon Intl with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Incheon Intl Airport to Seattle

How far ahead should I book a flight from Incheon Intl Airport to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Incheon Intl to Seattle. Price data was last updated on April 4, 2025.

What is the cheapest month to book a flight from Incheon Intl Airport to Seattle?

What is the cheapest time of day to fly from ICN to SEA?

Find hourly flight availability from Incheon Intl to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated abril 11, 2025.

Weekly flight availability from Incheon Intl Airport to Seattle

Explore weekly flight availability from Incheon Intl to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated abril 11, 2025.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

Reviews of airlines servicing Seattle

Read reviews from past customers who have flown EVA Air, Korean Air and China Airlines from Seoul to Seattle. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Incheon Intl to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Seattle from Incheon Intl?

How popular is this Incheon Intl Airport to Seattle flight route?

What are the cheapest airlines flying from Incheon Intl Airport to Seattle round-trip?

What are the cheapest airlines to fly from Incheon Intl Airport to Seattle one-way?

What are the most reliable airlines from Incheon Intl Airport to Seattle?

What are the cheapest flights from Incheon Intl Airport to Seattle?

Can I find deals for flights from Incheon Intl to Seattle that include hotel bookings?

How can I find direct flights from Incheon Intl to Seattle?

Can I find deals for business class flights from Incheon Intl to Seattle?

What is the cheapest month to book a flight from Incheon Intl Airport to Seattle?

Traveling to a place near Incheon Intl Airport?

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Alternative routes for Incheon Intl to Seattle

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Top 6 airlines flying from Incheon Intl to Seattle

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Cheapest flights from Incheon Intl to Seattle
Explore the most affordable flight options available from Incheon Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 11, 2025.