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$514+ Cheap flights from Seattle (SEA) to Busan (PUS)

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 5/22. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PUS
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Seattle to Busan

Cheapest flights from Seattle to Busan
Explore the most affordable flight options available from Seattle to Busan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This Delta deal was found by Cheapflights users on 12/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2311:00 amSEA - PUS
1 stop28h 10mDelta
Fri 12/2612:00 pmPUS - SEA
1 stop18h 20mDelta
Deal found 12/15$1,494
This Korean Air deal was found by Cheapflights users on 12/16. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1711:30 amSEA - PUS
1 stop16h 15mKorean Air
Wed 12/317:00 amPUS - SEA
1 stop19h 00mKorean Air
Deal found 12/16$2,948
This Gurufare deal was found by Cheapflights users on 12/17. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/179:30 pmSEA - PUS
1 stop29h 25mPhilippine Airlines
Wed 12/318:55 pmPUS - SEA
1 stop38h 45mPhilippine Airlines
Deal found 12/17$3,020
This Delta deal was found by Cheapflights users on 12/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1711:00 amSEA - PUS
1 stop16h 45mDelta
Wed 12/314:10 pmPUS - SEA
1 stop14h 10mDelta
Deal found 12/16$3,029
This Philippine Airlines deal was found by Cheapflights users on 12/17. 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/189:30 pmSEA - PUS
1 stop29h 25mMultiple Airlines
Sun 1/412:55 pmPUS - SEA
2 stops24h 46mMultiple Airlines
Deal found 12/17$3,054
This Air Canada deal was found by Cheapflights users on 12/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/173:40 pmSEA - PUS
2 stops46h 00mMultiple Airlines
Wed 12/317:20 amPUS - SEA
2 stops24h 11mMultiple Airlines
Deal found 12/16$3,068
This Delta deal was found by Cheapflights users on 12/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1811:00 amSEA - PUS
1 stop28h 10mDelta
Sun 1/44:10 pmPUS - SEA
1 stop14h 10mDelta
Deal found 12/16$3,979

Find flight deals from Seattle to Busan

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Busan (PUS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$867
(Trip.com)

One-way from

$514
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$1,994
Provider with most accurate pricing for Seattle/Tacoma Intl-Busan Gimhae flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Busan Gimhae flights.
Search Deals
From Seattle/Tacoma Intl to Busan Gimhae
Search Deals
One-way flight from Seattle/Tacoma Intl to Busan Gimhae
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($139 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($59 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Busan 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 December 18, 2025.
Use the filters below to find and compare flights from Seattle to Busan that are best for you.

Fly from

Seattle

Fly to

Busan

Route

Depart

Return

Price

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Tue 1/13

12:10 am-5:40 pm

1 stop24h 30m

Busan Gimhae

Wed 1/21

6:55 pm-6:10 pm

1 stop16h 15m

$867

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Wed 4/22

1:30 am-6:00 pm

1 stop24h 30m

Busan Gimhae

Mon 4/27

7:10 pm-7:30 pm

1 stop16h 20m

$911

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Fri 1/30

11:00 am-3:10 pm

1 stop35h 10m

Busan Gimhae

Fri 2/6

7:55 am-9:00 am

1 stop18h 05m

$958

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Sun 2/15

11:00 am-10:50 am

1 stop30h 50m

Busan Gimhae

Sun 2/22

4:10 pm-9:00 am

1 stop33h 50m

$958

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Sun 2/15

7:10 am-10:50 am

2 stops34h 40m

Busan Gimhae

Sun 2/22

7:55 am-9:00 am

1 stop18h 05m

$997

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Wed 1/14

7:15 am-8:10 am

2 stops31h 55m

Busan Gimhae

Wed 1/21

4:10 pm-9:00 am

1 stop33h 50m

$997

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Fri 1/30

7:15 am-10:50 am

2 stops34h 35m

Busan Gimhae

Fri 2/6

7:00 am-6:58 pm

2 stops28h 58m

$1,007

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Thu 4/23

6:55 pm-7:45 am

2 stops20h 50m

Busan Gimhae

Mon 4/27

8:00 am-10:40 am

1 stop18h 40m

$1,070

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Fri 5/22

12:10 am-1:35 pm

2 stops45h 25m

$514

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Thu 5/21

12:10 am-1:35 pm

2 stops45h 25m

$517

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 20 results
1
2

Compare providers for flights from Seattle to Busan

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 Seattle to Busan in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars

*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 Seattle-Busan flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Busan flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Seattle-Busan flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Busan flights, Cheapflights users trust eDreams the most. eDreams 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 Seattle-Busan flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Busan

Have a flexible travel schedule? Discover the best time to fly to Busan from Seattle 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 Seattle to Busan

What is the cheapest month to book a flight from Seattle to Busan?

Currently, August is the cheapest month in which you can book a flight from Seattle to Busan (average of $840). Flying from Seattle to Busan in December is currently the most expensive (average of $1,994). 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 SEA to PUS?

Find hourly flight availability from Seattle to Busan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

When flying from Seattle to Busan, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 49% versus a flight in the afternoon.

Reviews of airlines servicing Busan

Get insights into the airlines that provide service to Busan. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Busan. Reviews last updated December 18, 2025.
Peruse reviews from past customers who have flown with Korean Air, China Airlines, and Delta from Seattle to Busan to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,186 reviews

Boarding

8.5

Comfort

8.3

Food

8.1

Overall

8.4

Entertainment

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,186 reviews
Korean Air
8.4
Very good
1,186 reviews

Boarding

8.5

Comfort

8.3

Food

8.1

Overall

8.4

Entertainment

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
China Airlines
8.3
Very good
792 reviews
Korean Air
8.4
Very good
1,186 reviews

Boarding

8.5

Comfort

8.3

Food

8.1

Overall

8.4

Entertainment

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Delta
7.9
Good
8,005 reviews
Korean Air
8.4
Very good
1,186 reviews

Boarding

8.5

Comfort

8.3

Food

8.1

Overall

8.4

Entertainment

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

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

  • How long is the flight from Seattle to Busan?

    Departing from Seattle to Busan will take you 24h 30m. Airlines will cover a distance of 5228 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Seattle to Busan round-trip?

    According to our current data, China Airlines ($835), Delta ($956), and Korean Air ($959) offers the cheapest pricing from Seattle to Busan. China Airlines is priced at 38% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Seattle to Busan that include hotel bookings?

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

  • How can I find direct flights from Seattle to Busan?

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

  • Can I find deals for business class flights from Seattle to Busan?

    Yes. Cheapflights offers flight deals from Seattle to Busan 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 Seattle to Busan?

    Currently, August is the cheapest month in which you can book a flight from Seattle to Busan (average of $840). Flying from Seattle to Busan in December is currently the most expensive (average of $1,994). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Seattle to Busan

Discover the top 3 airlines that operate flights from Seattle to Busan. 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$835Average$980FlexibilityNo cancel feeOn-time70%
DeltaCheapest$956Average$1,392FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$959Average$1,269FlexibilityNo cancel feeOn-time81%

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