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$378+ 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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SEL
Sep 11 — Sep 181
Fri 9/11
Fri 9/18
1 adult, Economy
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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 August 12, 2026.

This Justfly.com deal was found by Cheapflights users on 8/7. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/262:30 pm -
1 stop36h 15m
Tue 9/81:30 pm -
2 stops35h 55m
Deal found 8/7$779
This Mytrip deal was found by Cheapflights users on 8/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/22:30 pm -
1 stop36h 15m
Sat 9/127:35 pm -
2 stops17h 15m
Deal found 8/6$881
This Trip.com deal was found by Cheapflights users on 8/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/117:01 am -
1 stop21h 19m
Wed 11/187:45 pm -
1 stop18h 05m
Deal found 8/8$882
This BusinessClass deal was found by Cheapflights users on 8/11. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/82:30 pm -
1 stop36h 15m
Tue 9/151:30 pm -
2 stops35h 55m
Deal found 8/11$911
This Kiwi.com deal was found by Cheapflights users on 8/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:03 am -
1 stop22h 37m
Mon 10/57:15 pm -
1 stop19h 57m
Deal found 8/6$917
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:18 am -
1 stop22h 02m
Sat 11/77:45 pm -
1 stop18h 05m
Deal found 8/7$918
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3010:48 am -
1 stop18h 32m
Mon 11/97:45 pm -
1 stop18h 05m
Deal found 8/7$922
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3010:37 am -
1 stop19h 03m
Wed 10/77:15 pm -
1 stop17h 35m
Deal found 8/7$923
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Sat 9/510:37 am -
1 stop17h 33m
Sat 9/126:00 pm -
1 stop14h 50m
Deal found 8/8$935
This Kiwi.com deal was found by Cheapflights users on 8/10. 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.
Sat 9/1210:37 am -
1 stop17h 33m
Sat 9/266:00 pm -
1 stop14h 50m
Deal found 8/10$936
This FlightHub deal was found by Cheapflights users on 8/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/133:30 pm -
2 stops38h 55m
Mon 10/195:40 pm -
2 stops55h 51m
Deal found 8/7$1,160
This Cheapflightsfares deal was found by Cheapflights users on 8/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:03 am -
2 stops22h 12m
Sat 9/1212:05 pm -
2 stops20h 45m
Deal found 8/6$1,233

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 August 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$779
(Justfly.com)

One-way from

$378
(KAYAK)

Popular in

June

Cheapest in

February

Average price

$1,236
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. 6% potential increase in price ($83 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
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 August 12, 2026.
Use the filters below to find and compare flights from Portland to Seoul that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

PortlandIncheon

PDX Portland - ICN Incheon Intl

PDXICN

Portland

Wed 10/14

5:30 am-4:50 pm

1 stop19h 20m

Incheon Intl

Thu 10/29

6:45 pm-5:04 pm

1 stop14h 19m

$1,107

PortlandIncheon

PDX Portland - ICN Incheon Intl

PDXICN

Portland

Mon 10/12

10:33 pm-3:20 pm

1 stop24h 47m

Incheon Intl

Mon 10/26

6:00 pm-12:44 am

1 stop22h 44m

$1,107

PortlandIncheon

PDX Portland - ICN Incheon Intl

PDXICN

Portland

Mon 10/5

7:00 am-3:00 pm

1 stop16h 00m

Incheon Intl

Mon 10/12

4:50 pm-10:57 pm

1 stop22h 07m

$1,107

PortlandIncheon

PDX Portland - ICN Incheon Intl

PDXICN

Portland

Mon 9/7

5:30 am-3:00 pm

1 stop17h 30m

Incheon Intl

Mon 9/14

11:30 am-12:00 pm

1 stop16h 30m

$1,107

PortlandIncheon

PDX Portland - ICN Incheon Intl

PDXICN

Portland

Tue 10/27

7:26 pm-4:40 am

1 stop17h 14m

Incheon Intl

Tue 11/10

12:45 pm-9:13 pm

2 stops25h 28m

$1,112

PortlandIncheon

PDX Portland - ICN Incheon Intl

PDXICN

Portland

Sun 11/1

11:10 pm-4:25 pm

1 stop24h 15m

Incheon Intl

Thu 11/12

12:45 pm-9:13 pm

2 stops25h 28m

$1,112

PortlandIncheon

PDX Portland - ICN Incheon Intl

PDXICN

Portland

Tue 10/13

1:03 pm-3:00 pm

1 stop33h 57m

Incheon Intl

Mon 12/14

12:45 pm-5:38 pm

2 stops21h 53m

$1,118

PortlandIncheon

PDX Portland - ICN Incheon Intl

PDXICN

Portland

Fri 8/21

11:15 am-4:20 am

1 stop25h 05m

Incheon Intl

Tue 9/1

11:30 am-6:19 pm

1 stop22h 49m

$1,157

PortlandIncheon

PDX Portland - ICN Incheon Intl

PDXICN

Portland

Mon 10/5

5:30 am-3:00 pm

1 stop17h 30m

Incheon Intl

Sun 10/18

4:50 pm-9:00 pm

1 stop20h 10m

$1,157

PortlandIncheon

PDX Portland - ICN Incheon Intl

PDXICN

Portland

Tue 11/3

3:40 pm-5:40 am

1 stop21h 00m

Incheon Intl

Sat 11/21

12:45 pm-6:24 pm

1 stop22h 39m

$1,157

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/9

Showing 1-10 of 36 resultsSorted by cheapest first
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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 August.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Seoul flight deals on Cheapflights vs. FlightHub >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 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 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

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

Currently, April is the cheapest month in which you can book a flight from Portland to Seoul (average of $953). Flying from Portland to Seoul in December is currently the most expensive (average of $1,582). 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?

Airfare is below average for this route at the moment.
Portland to Seoul flights typically cost between $986 and $1,298 in August.
The cheapest round-trip price found within the last 5 days was $779 on Multiple Airlines (Aug 26-Sep 8).

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

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 34 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 August 12, 2026.
See what other customers who have flown with Korean Air,Asiana Airlines, andAlaska Airlines 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
1,221 reviews

Overall

8.4

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Crew

8.7

Food

8.1

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
1,221 reviews
Korean Air
8.4
Very good
1,221 reviews

Overall

8.4

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Crew

8.7

Food

8.1

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
8.1
Very good
556 reviews
Korean Air
8.4
Very good
1,221 reviews

Overall

8.4

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Crew

8.7

Food

8.1

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.
Alaska Airlines
7.9
Good
12,796 reviews
Korean Air
8.4
Very good
1,221 reviews

Overall

8.4

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Crew

8.7

Food

8.1

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
7.8
Good
8,505 reviews
Korean Air
8.4
Very good
1,221 reviews

Overall

8.4

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Crew

8.7

Food

8.1

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
11,462 reviews
Korean Air
8.4
Very good
1,221 reviews

Overall

8.4

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Crew

8.7

Food

8.1

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. 6 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 $1,107, Delta can have you in Seoul from Portland in 19h 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, Alaska Airlines ($149), Air Canada ($791), and Asiana Airlines ($881) offers the cheapest pricing from Portland to Seoul. Alaska Airlines is 86% 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 Alaska Airlines, which is currently one of the cheapest options available, starting at $400. Delta flights start at $460 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?

    Queen Elizabeth Theatre, Pacific Central Station, and Orpheum Theatre are the most popular attractions in Vancouver if you're in need of something to do during your layover. Queen Elizabeth Theatre, Pacific Central Station, and Orpheum Theatre can be accessed by traveling approximately 6.6 mi, 6.6 mi, and 6.5 mi, respectively from Vancouver Intl. Travelers in need of a car in Vancouver can rent one for about $64 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, April is the cheapest month in which you can book a flight from Portland to Seoul (average of $953). Flying from Portland to Seoul in December is currently the most expensive (average of $1,582). 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

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Alternative routes for Portland to Seoul

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Incheon Intl flights
Boise to Incheon Intl flights

Top 6 airlines flying from Portland to Seoul

Discover the top 6 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 August 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$149Average$1,053FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$791Average$1,228FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$881Average$1,253FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$915Average$1,336FlexibilityNo cancel feeOn-time69%
DeltaCheapest$916Average$1,250FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$1,155Average$1,223FlexibilityNo cancel feeOn-time81%

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