HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seoul

$418+ Cheap flights from Portland (PDX) 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 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SEL
Jan 6 — Jan 131
Tue 1/6
Tue 1/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to Seoul 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

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Portland to Seoul are usually found in February or January, booked 51 days in advance, depart on a Thursday or Tuesday and return on a Tuesday

Cheap flight deals from Portland to Seoul

Cheapest flights from Portland to Seoul
Explore the most affordable flight options available from Portland to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 7, 2025.

This United Airlines deal was found by Cheapflights users on 12/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:45 pmPDX - ICN
1 stop16h 55mUnited Airlines
Mon 12/296:00 pmICN - PDX
1 stop21h 46mUnited Airlines
Deal found 12/4$916
This United Airlines deal was found by Cheapflights users on 12/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/64:02 pmPDX - ICN
2 stops20h 38mUnited Airlines
Sat 12/2712:45 pmICN - PDX
1 stop23h 03mUnited Airlines
Deal found 12/5$920
This Delta deal was found by Cheapflights users on 12/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/65:15 pmPDX - ICN
1 stop30h 15mDelta
Sat 12/278:05 pmICN - PDX
1 stop20h 50mDelta
Deal found 12/5$921
This United Airlines deal was found by Cheapflights users on 12/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:30 amPDX - ICN
1 stop15h 45mUnited Airlines
Tue 12/3012:45 pmICN - PDX
1 stop23h 03mUnited Airlines
Deal found 12/4$961
This United Airlines deal was found by Cheapflights users on 12/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/147:43 pmPDX - ICN
1 stop27h 32mUnited Airlines
Fri 1/96:00 pmICN - PDX
2 stops32h 45mUnited Airlines
Deal found 12/5$1,151
This United Airlines deal was found by Cheapflights users on 12/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:30 amPDX - ICN
1 stop15h 45mUnited Airlines
Wed 12/316:00 pmICN - PDX
2 stops33h 01mUnited Airlines
Deal found 12/4$1,173
This Alaska Airlines deal was found by Cheapflights users on 12/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/241:51 pmPDX - ICN
1 stop35h 44mAlaska Airlines
Sun 12/288:35 pmICN - PDX
1 stop19h 24mAlaska Airlines
Deal found 12/6$1,197
This United Airlines deal was found by Cheapflights users on 12/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/155:00 amPDX - ICN
2 stops31h 40mUnited Airlines
Thu 3/56:00 pmICN - PDX
1 stop22h 04mUnited Airlines
Deal found 12/7$1,210
This Japan Airlines deal was found by Cheapflights users on 12/5. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/145:59 pmPDX - GMP
2 stops35h 06mMultiple Airlines
Wed 12/1712:05 pmGMP - PDX
2 stops22h 23mMultiple Airlines
Deal found 12/5$1,219
This SmartFares deal was found by Cheapflights users on 12/5. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/149:30 pmPDX - ICN
1 stop25h 15mMultiple Airlines
Wed 12/178:40 pmICN - PDX
1 stop20h 22mMultiple Airlines
Deal found 12/5$1,326
This Orbitz deal was found by Cheapflights users on 12/5. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/155:41 amPDX - GMP
2 stops23h 24mMultiple Airlines
Sat 12/2012:05 pmGMP - PDX
2 stops26h 56mMultiple Airlines
Deal found 12/5$1,343
This Kiwi.com deal was found by Cheapflights users on 12/4. 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 12/255:30 pmPDX - ICN
1 stop32h 05mMultiple Airlines
Mon 12/296:00 pmICN - PDX
2 stops18h 34mMultiple Airlines
Deal found 12/4$1,357

Find flight deals from Portland to Seoul

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Seoul (SEL). 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 7, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$821
(Alaska Airlines)

One-way from

$418
(Alaska Airlines)

Popular in

June

Cheapest in

February

Average price

$1,354
Provider with most accurate pricing for Portland-Seoul (SEL) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Seoul (SEL) flights.
Search Deals
From Portland to Seoul (SEL)
Search Deals
One-way flight from Portland to Seoul (SEL)
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($220 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($35 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 Portland 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 December 7, 2025.
Use the filters below to find and compare flights from Portland to Seoul that are best for you.

Fly from

Portland

Fly to

Seoul

Route

Depart

Return

Price

PortlandIncheon

PDX - ICN

PDXICN

Portland

Thu 2/12

3:50 pm-5:45 am

1 stop20h 55m

Incheon Intl

Mon 2/23

8:50 pm-10:59 pm

1 stop19h 09m

$902

PortlandIncheon

PDX - ICN

PDXICN

Portland

Mon 2/9

9:50 am-5:10 pm

1 stop14h 20m

Incheon Intl

Tue 3/3

6:55 pm-6:30 pm

1 stop16h 35m

$909

PortlandIncheon

PDX - ICN

PDXICN

Portland

Wed 2/11

9:50 am-11:25 pm

2 stops20h 35m

Incheon Intl

Thu 2/26

6:55 pm-2:40 pm

1 stop12h 45m

$910

PortlandIncheon

PDX - ICN

PDXICN

Portland

Wed 4/1

2:50 pm-4:30 am

1 stop21h 40m

Incheon Intl

Sat 4/18

8:40 pm-11:20 pm

1 stop18h 40m

$913

PortlandIncheon

PDX - ICN

PDXICN

Portland

Fri 12/26

7:45 pm-5:40 am

1 stop16h 55m

Incheon Intl

Sun 12/28

6:00 pm-10:46 pm

1 stop21h 46m

$916

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sat 12/27

7:45 pm-5:40 am

1 stop16h 55m

Incheon Intl

Mon 12/29

6:00 pm-6:48 pm

1 stop17h 48m

$916

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sat 12/27

7:45 pm-5:40 am

1 stop16h 55m

Incheon Intl

Tue 12/30

12:45 pm-2:46 pm

1 stop19h 01m

$916

PortlandIncheon

PDX - ICN

PDXICN

Portland

Wed 12/24

7:45 pm-5:40 am

1 stop16h 55m

Incheon Intl

Tue 12/30

12:45 pm-6:48 pm

1 stop23h 03m

$916

PortlandIncheon

PDX - ICN

PDXICN

Portland

Wed 2/11

5:00 am-5:40 am

2 stops31h 40m

Incheon Intl

Thu 2/26

12:45 pm-5:51 pm

2 stops22h 06m

$920

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sun 1/4

6:27 pm-4:15 pm

2 stops28h 48m

Incheon Intl

Sun 2/1

6:00 pm-9:12 pm

2 stops20h 12m

$920

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/6

Showing 1-10 of 38 results
1
2
3
4

Compare providers for flights from Portland to Seoul

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

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

How far ahead should I book a flight from Portland to Seoul?

Use this chart to determine the optimal time to book a round-trip flight from Portland to Seoul. Price data was last updated on December 5, 2025.

The price you pay for your flight from Portland to Seoul may vary depending on when you book. For the best chance of a lower fare, look to book 51 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Portland to Seoul?

Currently, June is the cheapest month in which you can book a flight from Portland to Seoul (average of $686). Flying from Portland to Seoul in August is currently the most expensive (average of $961). 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.

How much does it cost to fly round-trip from Portland to Seoul?

Reviews of airlines servicing Seoul

Get insights into the airlines that provide service to Seoul. 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 Seoul. Reviews last updated December 7, 2025.
See what other customers who have flown with Korean Air, Asiana Airlines, and Delta from Portland to Seoul have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,180 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Overall

8.4

Boarding

8.5

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
1,180 reviews
Korean Air
8.4
Very good
1,180 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Overall

8.4

Boarding

8.5

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.
Asiana Airlines
8.2
Very good
490 reviews
Korean Air
8.4
Very good
1,180 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Overall

8.4

Boarding

8.5

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
8,013 reviews
Korean Air
8.4
Very good
1,180 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Overall

8.4

Boarding

8.5

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.
United Airlines
7.4
Good
9,072 reviews
Korean Air
8.4
Very good
1,180 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Overall

8.4

Boarding

8.5

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.
Air Canada
7.1
Good
10,512 reviews
Korean Air
8.4
Very good
1,180 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Overall

8.4

Boarding

8.5

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 Portland to Seoul. 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 from for flights from Portland to Seoul?

    Portland (PDX), located 6.0 mi from the city center, is the airport you fly out of when you book flights from Portland to Seoul. 7 airlines have flights from Portland to Seoul on a regular basis. Booking flights from Portland to Seoul should not be difficult; the airport handles an average of 0 outbound flights to Seoul per day.

  • How long is the flight from Portland to Seoul?

    For as low as $909, Air Canada can have you in Seoul from Portland in 14h 20m. Airlines will cover a distance of 5273 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Portland to Seoul round-trip?

    According to our current data, Air Canada ($743), Hawaiian Airlines ($767), and Alaska Airlines ($840) offers the cheapest pricing from Portland to Seoul. Air Canada is 33% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Portland to Seoul one-way?

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $432. Air Canada flights start at $441 while deals on United Airlines start at $468 one-way.

  • Where are the most common layover locations when flying from Portland to Seoul?

    Of the flights from Portland to Seoul that have layovers, most of them stop in Vancouver.

  • What are some popular things to do or see while on a layover in Vancouver?

    Orpheum Theatre, Pacific Central Station, and Capilano Suspension Bridge are the most popular attractions in Vancouver if you're in need of something to do during your layover. Orpheum Theatre, Pacific Central Station, and Capilano Suspension Bridge can be accessed by traveling approximately 6.5 mi, 6.6 mi, and 10.6 mi, respectively from Vancouver Intl. Travelers in need of a car in Vancouver can rent one for about $37 per day.

  • Where are the least popular layover locations for Portland to Seoul flights?

    The least popular layover on flights from Portland to Seoul is Seattle.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portland 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 Portland to Seoul?

    Currently, June is the cheapest month in which you can book a flight from Portland to Seoul (average of $686). Flying from Portland to Seoul in August is currently the most expensive (average of $961). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 7 airlines flying from Portland to Seoul

Discover the top 7 airlines that operate flights from Portland 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 December 7, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$767Average$1,292FlexibilityNo cancel feeOn-time85%
Air CanadaCheapest$806Average$1,093FlexibilityNo cancel feeOn-time67%
Alaska AirlinesCheapest$847Average$960FlexibilityNo cancel feeOn-time75%
DeltaCheapest$849Average$1,140FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$907Average$1,578FlexibilityNo cancel feeOn-time69%
Asiana AirlinesCheapest$912Average$1,126FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$1,082Average$1,484FlexibilityNo cancel feeOn-time81%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.