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$345+ 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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SEL
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to Seoul are usually found in February or March, 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 18, 2025.

This United 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 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 stop27h 30mUnited Airlines
Wed 12/3112:45 pmICN - PDX
2 stops38h 16mUnited Airlines
Deal found 12/17$1,272
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/217:45 pmPDX - ICN
1 stop27h 30mUnited Airlines
Tue 12/237:25 pmICN - PDX
2 stops44h 21mUnited Airlines
Deal found 12/17$1,411
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:15 pmPDX - ICN
1 stop30h 15mDelta
Wed 12/318:05 pmICN - PDX
1 stop17h 31mDelta
Deal found 12/17$1,456
This United Airlines 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 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 1/712:45 pmICN - PDX
1 stop23h 11mUnited Airlines
Deal found 12/16$1,474
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/255:15 pmPDX - ICN
1 stop30h 15mDelta
Thu 1/12:30 pmICN - PDX
1 stop20h 45mDelta
Deal found 12/17$1,578
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:48 pmPDX - ICN
1 stop19h 07mMultiple Airlines
Wed 1/79:00 pmICN - PDX
1 stop14h 56mMultiple Airlines
Deal found 12/17$1,579
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 12/255:15 pmPDX - ICN
1 stop30h 15mDelta
Wed 1/72:30 pmICN - PDX
2 stops25h 24mDelta
Deal found 12/16$1,582
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:52 pmPDX - ICN
1 stop31h 23mUnited Airlines
Wed 1/76:00 pmICN - PDX
1 stop13h 48mUnited Airlines
Deal found 12/16$1,622
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/259:00 amPDX - ICN
2 stops27h 40mUnited Airlines
Thu 1/16:00 pmICN - PDX
2 stops33h 01mUnited Airlines
Deal found 12/17$1,648
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.
Sat 12/205:30 amPDX - ICN
1 stop17h 50mMultiple Airlines
Thu 12/258:05 pmICN - PDX
1 stop13h 19mMultiple Airlines
Deal found 12/16$1,650
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:15 amPDX - GMP
2 stops21h 50mMultiple Airlines
Wed 12/317:50 pmGMP - PDX
2 stops39h 40mMultiple Airlines
Deal found 12/17$2,622
This Ovago 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:15 amPDX - GMP
2 stops21h 50mJapan Airlines
Wed 1/77:40 pmGMP - PDX
2 stops39h 12mJapan Airlines
Deal found 12/17$2,637

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 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$714
(Kiwi.com)

One-way from

$368
(TravelUp)

Popular in

December

Cheapest in

February

Average price

$1,501
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. 4% potential increase in price ($56 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($34 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 18, 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

Tue 2/10

9:30 pm-6:35 pm

1 stop28h 05m

Incheon Intl

Sat 2/28

8:35 pm-7:15 pm

1 stop15h 40m

$616

PortlandIncheon

PDX - ICN

PDXICN

Portland

Wed 2/11

5:35 pm-6:35 pm

1 stop32h 00m

Incheon Intl

Fri 2/27

8:35 pm-7:15 pm

1 stop15h 40m

$616

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sun 1/25

10:30 am-6:35 pm

1 stop15h 05m

Incheon Intl

Sun 2/22

8:35 pm-6:05 pm

1 stop14h 30m

$616

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sat 2/7

7:38 pm-6:35 pm

1 stop29h 57m

Incheon Intl

Fri 2/27

8:35 pm-6:05 pm

1 stop14h 30m

$616

PortlandIncheon

PDX - ICN

PDXICN

Portland

Thu 2/5

10:30 am-6:35 pm

1 stop15h 05m

Incheon Intl

Sat 2/28

8:35 pm-7:15 pm

1 stop15h 40m

$616

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sun 2/8

6:00 am-6:35 pm

1 stop19h 35m

Incheon Intl

Fri 2/27

8:35 pm-7:15 pm

1 stop15h 40m

$616

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sun 2/8

6:00 am-6:35 pm

1 stop19h 35m

Incheon Intl

Sun 3/1

8:35 pm-10:41 pm

1 stop19h 06m

$666

PortlandIncheon

PDX - ICN

PDXICN

Portland

Fri 2/6

9:20 am-4:30 pm

1 stop14h 10m

Incheon Intl

Thu 2/26

8:05 pm-12:15 am

1 stop21h 10m

$716

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sun 2/8

9:20 am-4:30 pm

1 stop14h 10m

Incheon Intl

Tue 3/3

8:05 pm-8:55 pm

1 stop17h 50m

$716

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sun 2/8

7:10 am-4:30 pm

1 stop16h 20m

Incheon Intl

Wed 2/25

8:05 pm-12:15 am

1 stop21h 10m

$716

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 41 results
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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 12, 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.

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 18, 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
1,186 reviews

Overall

8.4

Boarding

8.5

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

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

Overall

8.4

Boarding

8.5

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

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
493 reviews
Korean Air
8.4
Very good
1,186 reviews

Overall

8.4

Boarding

8.5

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

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

Overall

8.4

Boarding

8.5

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

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
9,092 reviews
Korean Air
8.4
Very good
1,186 reviews

Overall

8.4

Boarding

8.5

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

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
10,534 reviews
Korean Air
8.4
Very good
1,186 reviews

Overall

8.4

Boarding

8.5

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

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 $882, Japan Airlines can have you in Seoul from Portland in 21h 45m. Airlines will cover a distance of 5254 mi.

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

    According to our current data, Air Canada ($744), Hawaiian Airlines ($767), and Alaska Airlines ($840) offers the cheapest pricing from Portland to Seoul. Air Canada is 34% 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 $450 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

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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 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$767Average$1,292FlexibilityNo cancel feeOn-time85%
Air CanadaCheapest$806Average$1,088FlexibilityNo cancel feeOn-time67%
Alaska AirlinesCheapest$840Average$960FlexibilityNo cancel feeOn-time75%
DeltaCheapest$849Average$1,161FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$907Average$1,420FlexibilityNo cancel feeOn-time69%
Asiana AirlinesCheapest$912Average$1,138FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$1,082Average$1,489FlexibilityNo cancel feeOn-time81%

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