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$340+ Cheap flights from Washington to Seoul (SEL)

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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SEL
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
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Cheap flight deals from Washington to Seoul

Keep the following information in mind while searching for Washington to Seoul flight deals. Data was last updated January 8, 2026.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$445
(Expedia)

One-way from

$340
(SmartFares)

Popular in

June

Cheapest in

November

Average price

$870

Good round-trip deal

$651 or less

Good one-way deal

$381 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Seoul (SEL) flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Seoul (SEL) flights.
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From Washington to Seoul (SEL)
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One-way flight from Washington to Seoul (SEL)
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Highest demand for flights based on searches. 18% potential increase in price ($232 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($40 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Price to beat on a round-trip flight from Washington to Seoul (SEL).
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Price to beat on a one-way flight from Washington to Seoul (SEL).
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Find flight deals from Washington to Seoul

Cheapest flights from Washington to Seoul
Explore the most affordable flight options available from Washington to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 8, 2026.

This Expedia deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/217:05 pmPDX - ICN
1 stop29h 05mAir Canada
Sat 2/286:55 pmICN - PDX
1 stop16h 35mAir Canada
Deal found 1/7$445
This Booking.com deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/305:50 amSEA - ICN
1 stop18h 15mAir Canada
Sat 6/65:45 pmICN - SEA
1 stop16h 45mAir Canada
Deal found 1/7$646
This Kiwi.com deal was found by Cheapflights users on 1/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/112:01 pmSEA - ICN
1 stop24h 09mMultiple Airlines
Thu 2/59:20 pmICN - SEA
2 stops30h 05mMultiple Airlines
Deal found 1/8$665
This Kiwi.com deal was found by Cheapflights users on 1/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/1510:05 amSEA - ICN
2 stops41h 30mMultiple Airlines
Sun 3/89:20 pmICN - SEA
2 stops29h 05mMultiple Airlines
Deal found 1/8$669
This oojo deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/510:05 amSEA - ICN
2 stops41h 30mHainan Airlines
Wed 3/189:40 pmICN - SEA
2 stops27h 25mHainan Airlines
Deal found 1/7$678
This oojo deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/2611:05 amSEA - ICN
2 stops41h 30mHainan Airlines
Wed 4/229:15 pmICN - SEA
2 stops27h 50mHainan Airlines
Deal found 1/6$688
This Kiwi.com deal was found by Cheapflights users on 1/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/2711:24 amSEA - ICN
1 stop17h 11mMultiple Airlines
Thu 2/59:20 pmICN - SEA
2 stops30h 05mMultiple Airlines
Deal found 1/8$693
This Kissandfly.com deal was found by Cheapflights users on 1/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/1510:05 amSEA - ICN
1 stop41h 30mHainan Airlines
Wed 1/289:40 pmICN - SEA
1 stop27h 25mHainan Airlines
Deal found 1/8$695
This Booking.com deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/3010:10 amSEA - ICN
1 stop13h 55mAir Canada
Sun 4/125:45 pmICN - SEA
1 stop20h 23mAir Canada
Deal found 1/7$697
This Kiwi.com deal was found by Cheapflights users on 1/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/1510:05 amSEA - ICN
2 stops41h 30mMultiple Airlines
Tue 3/109:20 pmICN - SEA
1 stop13h 32mMultiple Airlines
Deal found 1/8$698
This FlightHub deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1211:05 amSEA - ICN
2 stops41h 30mHainan Airlines
Wed 3/189:40 pmICN - SEA
2 stops27h 25mHainan Airlines
Deal found 1/6$701
This Kiwi.com deal was found by Cheapflights users on 1/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/812:01 pmSEA - ICN
1 stop24h 09mMultiple Airlines
Sat 2/289:20 pmICN - SEA
2 stops30h 05mMultiple Airlines
Deal found 1/5$706

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Seoul that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 8, 2026.
Use the filters below to find and compare flights from Washington to Seoul that are best for you.

Fly from

Washington

Fly to

Seoul

Route

Depart

Return

Price

PortlandIncheon

PDX - ICN

PDXICN

Portland

Thu 2/5

7:05 pm-5:10 pm

1 stop29h 05m

Incheon Intl

Thu 2/12

2:35 pm-6:30 pm

2 stops20h 55m

$776

PortlandIncheon

PDX - ICN

PDXICN

Portland

Wed 2/18

3:15 pm-4:00 pm

1 stop31h 45m

Incheon Intl

Tue 2/24

6:55 pm-2:40 pm

1 stop12h 45m

$793

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 2/23

11:25 am-4:30 pm

Nonstop12h 05m

Incheon Intl

Fri 3/20

8:05 pm-2:20 pm

Nonstop10h 15m

$799

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 3/23

12:00 pm-3:55 pm

Nonstop11h 55m

Incheon Intl

Fri 4/10

4:40 pm-10:40 am

Nonstop10h 00m

$799

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 4/8

1:00 pm-4:50 pm

Nonstop11h 50m

Incheon Intl

Sat 4/25

7:00 pm-1:07 pm

Nonstop10h 07m

$799

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 4/9

12:50 pm-4:40 pm

Nonstop11h 50m

Incheon Intl

Sun 4/26

7:00 pm-1:07 pm

Nonstop10h 07m

$801

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 3/5

7:10 am-5:40 pm

1 stop17h 30m

Incheon Intl

Thu 3/12

4:10 pm-10:00 am

Nonstop9h 50m

$804

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 3/25

7:24 am-5:40 pm

1 stop18h 16m

Incheon Intl

Wed 4/22

4:00 pm-5:16 pm

1 stop17h 16m

$814

PortlandIncheon

PDX - ICN

PDXICN

Portland

Mon 3/23

9:05 am-4:30 pm

1 stop15h 25m

Incheon Intl

Thu 4/23

7:00 pm-9:34 pm

1 stop18h 34m

$814

PortlandIncheon

PDX - ICN

PDXICN

Portland

Thu 2/5

9:20 am-4:30 pm

1 stop14h 10m

Incheon Intl

Thu 2/12

8:05 pm-8:55 pm

1 stop17h 50m

$814

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/8

Showing 1-10 of 60 results
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Best time to book a flight from Washington to Seoul

Have a flexible travel schedule? Discover the best time to fly to Seoul from Washington 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 Washington to Seoul

What is the cheapest month to book a flight from State of Washington to Seoul?

Currently, April is the cheapest month in which you can book a flight from State of Washington to Seoul (average of $335). Flying from State of Washington to Seoul in December is currently the most expensive (average of $749). 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 WA to SEL?

Find hourly flight availability from Washington to Seoul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 8, 2026.

It’s optimal to fly from State of Washington to Seoul in the evening. By choosing this option you can save up to 49% on the cost of your flight, compared to a flight in the afternoon.

Weekly flight availability from State of Washington to Seoul

Explore weekly flight availability from Washington to Seoul. 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 January 8, 2026.

The most flights from USWA to SEL are scheduled on a Thursday (10 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).

How much does it cost to fly round-trip from State of Washington to Seoul?

Related info for your journey

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

  • How popular is this State of Washington to Seoul flight route?

    Flights from Washington to Seoul have been viewed 200 times in the past calendar month.

  • How long is the flight from State of Washington to Seoul?

    There are many flights that can get you from State of Washington to Seoul in 11h 50m. Fly via Air Canada, Delta, or Korean Air to get the fastest option. There are 5200 mi between State of Washington and Seoul. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from State of Washington to Seoul one-way?

    The cheapest airline one-way is Hawaiian Airlines, with whom users have recently found tickets for as low as $160. However, be on the lookout for offers from Alaska Airlines and Asiana Airlines, as they are both options that can get you from State of Washington to Seoul for a low price.

  • What are the most popular routes from State of Washington to Seoul?

    When deciding which route to take from State of Washington to Seoul consider Seattle/Tacoma Intl - Incheon Intl, Seattle/Tacoma Intl - Seoul Gimpo Intl or Portland - Incheon Intl as they are the most popular.

  • What are the most reliable airlines from State of Washington to Seoul?

    Consider Thai Airways (71%), Asiana Airlines (71%) or United Airlines (71%) when booking your flight. These represent the most reliable airlines when flying from State of Washington to Seoul.

  • What are the cheapest flights from State of Washington to Seoul?

    While on average a flight from State of Washington to Seoul is generally $1,282, our data shows the cheapest flight currently is $198. When looking at the most popular route, (Seattle/Tacoma Intl - Incheon Intl), you can expect to pay $713 for that flight.

  • Can I find deals for flights from Washington to Seoul that include hotel bookings?

    Yes. In addition to deals on Washington to Seoul flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to Seoul?

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

  • Can I find deals for business class flights from Washington to Seoul?

    Yes. Cheapflights offers flight deals from Washington to Seoul 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 State of Washington to Seoul?

    Currently, April is the cheapest month in which you can book a flight from State of Washington to Seoul (average of $335). Flying from State of Washington to Seoul in December is currently the most expensive (average of $749). 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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Alternative routes for Washington to Seoul

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Washington to Seoul

Discover the top 10 airlines that operate flights from Washington to Seoul. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$183Average$1,158FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$282Average$660FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$282Average$884FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$335Average$338FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$609Average$977FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$796Average$1,081FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$847Average$1,532FlexibilityNo cancel feeOn-time81%
China AirlinesCheapest$886Average$1,079FlexibilityNo cancel feeOn-time70%
EVA AirCheapest$978Average$1,091FlexibilityNo cancel feeOn-time74%
Turkish AirlinesCheapest$995Average$1,207FlexibilityNo cancel feeOn-time77%

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