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$409+ 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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SEL
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to Seoul are usually found in February or March, booked 53 days in advance, depart on a Thursday or Tuesday and return on a Tuesday

Cheap 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 September 15, 2025.

Round-trip from

$698
(Kiwi.com)

One-way from

$409
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,010
From Portland to Seoul (SEL)
Search Deals
One-way flight from Portland to Seoul (SEL)
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Highest demand for flights based on searches. 18% potential increase in price ($247 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 15, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/611:23 amPDX - ICN
2 stops36h 22mMultiple Airlines
Wed 10/156:20 pmICN - PDX
1 stop14h 34mMultiple Airlines
Deal found 9/14$698
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/69:30 pmPDX - ICN
1 stop26h 15mMultiple Airlines
Fri 10/108:45 pmICN - PDX
1 stop32h 20mMultiple Airlines
Deal found 9/14$706
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/61:08 pmPDX - ICN
1 stop34h 37mMultiple Airlines
Thu 10/98:35 pmICN - PDX
1 stop15h 53mMultiple Airlines
Deal found 9/14$712
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/611:23 amPDX - ICN
2 stops36h 22mMultiple Airlines
Sun 10/129:25 pmICN - PDX
1 stop17h 05mMultiple Airlines
Deal found 9/14$719
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 11/81:21 pmPDX - ICN
1 stop33h 49mMultiple Airlines
Thu 12/118:35 pmICN - PDX
1 stop17h 45mMultiple Airlines
Deal found 9/14$781
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 11/73:26 pmPDX - ICN
2 stops31h 44mMultiple Airlines
Mon 12/88:35 pmICN - PDX
1 stop14h 20mMultiple Airlines
Deal found 9/14$783
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 11/73:26 pmPDX - ICN
2 stops31h 44mMultiple Airlines
Thu 12/118:35 pmICN - PDX
1 stop17h 45mMultiple Airlines
Deal found 9/14$784
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/611:23 amPDX - ICN
2 stops36h 22mMultiple Airlines
Mon 10/136:20 pmICN - PDX
1 stop14h 34mMultiple Airlines
Deal found 9/14$787
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/1212:43 pmPDX - ICN
2 stops48h 07mMultiple Airlines
Sun 10/268:35 pmICN - PDX
1 stop16h 02mMultiple Airlines
Deal found 9/14$788
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/35:41 pmPDX - ICN
2 stops32h 44mMultiple Airlines
Thu 11/68:35 pmICN - PDX
1 stop14h 12mMultiple Airlines
Deal found 9/15$789
This Orbitz deal was found by Cheapflights users on 9/14. 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 9/247:00 amPDX - GMP
2 stops22h 50mJapan Airlines
Tue 10/147:20 pmGMP - PDX
2 stops37h 34mJapan Airlines
Deal found 9/14$941
This FlightHub deal was found by Cheapflights users on 9/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/25:29 amPDX - GMP
2 stops35h 31mChina Eastern
Sun 11/98:50 pmGMP - PDX
2 stops36h 32mChina Eastern
Deal found 9/15$1,036

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 September 15, 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

Sun 11/16

6:00 am-6:35 pm

1 stop19h 35m

Incheon Intl

Mon 12/1

8:35 pm-12:18 am

1 stop20h 43m

$892

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sat 10/25

11:59 pm-3:55 pm

1 stop23h 56m

Incheon Intl

Mon 11/10

7:15 pm-11:26 pm

1 stop21h 11m

$892

PortlandIncheon

PDX - ICN

PDXICN

Portland

Thu 2/26

9:40 am-6:35 pm

1 stop15h 55m

Incheon Intl

Sat 5/2

8:35 pm-8:43 pm

1 stop16h 08m

$892

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sun 11/16

6:00 am-6:35 pm

1 stop19h 35m

Incheon Intl

Thu 12/4

8:35 pm-9:20 pm

1 stop17h 45m

$892

PortlandIncheon

PDX - ICN

PDXICN

Portland

Tue 11/11

7:09 am-7:25 pm

1 stop19h 16m

Incheon Intl

Fri 12/12

8:35 pm-4:50 pm

1 stop13h 15m

$892

PortlandIncheon

PDX - ICN

PDXICN

Portland

Tue 11/11

7:09 am-7:25 pm

1 stop19h 16m

Incheon Intl

Mon 12/8

8:35 pm-12:19 am

1 stop20h 44m

$892

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sat 10/4

7:30 am-3:00 pm

1 stop15h 30m

Incheon Intl

Fri 10/10

4:50 pm-10:45 pm

2 stops21h 55m

$897

PortlandIncheon

PDX - ICN

PDXICN

Portland

Mon 10/6

7:35 pm-4:20 am

1 stop16h 45m

Incheon Intl

Sat 10/11

11:30 am-3:05 pm

2 stops19h 35m

$897

PortlandIncheon

PDX - ICN

PDXICN

Portland

Wed 2/25

8:45 pm-6:35 pm

1 stop28h 50m

Incheon Intl

Fri 5/1

8:35 pm-12:03 am

1 stop19h 28m

$898

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sat 2/28

5:30 pm-6:35 pm

1 stop32h 05m

Incheon Intl

Thu 4/30

8:35 pm-9:05 am

1 stop28h 30m

$903

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 45 results
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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 September 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, February is the cheapest month in which you can book a flight from Portland to Seoul (average of $990). Flying from Portland to Seoul in December is currently the most expensive (average of $1,633). 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 PDX to SEL?

Find hourly flight availability from Portland 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 September 15, 2025.

It’s optimal to fly from Portland to Seoul at noon. By choosing this option you can save up to 25% on the cost of your flight, compared to a flight in the afternoon.

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 September 15, 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
1,139 reviews

Comfort

8.3

Entertainment

8.2

Food

8.1

Overall

8.4

Crew

8.7

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
1,139 reviews
Korean Air
8.4
Very good
1,139 reviews

Comfort

8.3

Entertainment

8.2

Food

8.1

Overall

8.4

Crew

8.7

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
479 reviews
Korean Air
8.4
Very good
1,139 reviews

Comfort

8.3

Entertainment

8.2

Food

8.1

Overall

8.4

Crew

8.7

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
8.0
Very good
7,954 reviews
Korean Air
8.4
Very good
1,139 reviews

Comfort

8.3

Entertainment

8.2

Food

8.1

Overall

8.4

Crew

8.7

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
8,929 reviews
Korean Air
8.4
Very good
1,139 reviews

Comfort

8.3

Entertainment

8.2

Food

8.1

Overall

8.4

Crew

8.7

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
10,000 reviews
Korean Air
8.4
Very good
1,139 reviews

Comfort

8.3

Entertainment

8.2

Food

8.1

Overall

8.4

Crew

8.7

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 $892, Alaska Airlines can have you in Seoul from Portland in 19h 35m. 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, Hawaiian Airlines ($767), Air Canada ($809), and Delta ($849) offers the cheapest pricing from Portland to Seoul. Hawaiian Airlines is 31% 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 $451. United Airlines flights start at $451 while deals on Japan Airlines start at $519 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 $56 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, February is the cheapest month in which you can book a flight from Portland to Seoul (average of $990). Flying from Portland to Seoul in December is currently the most expensive (average of $1,633). 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$767Average$1,322FlexibilityNo cancel feeOn-time85%
Air CanadaCheapest$809Average$1,081FlexibilityNo cancel feeOn-time67%
DeltaCheapest$849Average$1,021FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$907Average$1,213FlexibilityNo cancel feeOn-time69%
Asiana AirlinesCheapest$912Average$1,126FlexibilityNo cancel feeOn-time76%
Alaska AirlinesCheapest$951Average$1,074FlexibilityNo cancel feeOn-time75%
Korean AirCheapest$1,084Average$1,494FlexibilityNo cancel feeOn-time81%

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