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Cheap flights from Portland to Seoul from $409

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Seoul departing on 9/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Multiple Airlines Logo
1:21 pm - 4:20 pmPDX-ICN
34h 59m1 stop
Multiple Airlines Logo
8:35 pm - 1:50 pmICN-PDX
34h 15m1 stop
$770Multiple Airlines
Find Deal
Sat, Nov 1 - Sat, Nov 8
Multiple Airlines Logo
3:26 pm - 4:20 pmPDX-ICN
31h 54m2 stops
Multiple Airlines Logo
8:35 pm - 4:50 pmICN-PDX
13h 15m1 stop
$783Multiple Airlines
Find Deal
Sun, Nov 9 - Fri, Dec 12
Multiple Airlines Logo
3:29 pm - 7:25 pmPDX-ICN
34h 56m2 stops
Multiple Airlines Logo
8:35 pm - 4:50 pmICN-PDX
13h 15m1 stop
$784Multiple Airlines
Find Deal
Mon, Nov 10 - Fri, Dec 12
Multiple Airlines Logo
1:21 pm - 4:20 pmPDX-ICN
33h 59m1 stop
Multiple Airlines Logo
8:35 pm - 4:50 pmICN-PDX
13h 15m1 stop
$785Multiple Airlines
Find Deal
Sat, Nov 8 - Fri, Dec 12
Multiple Airlines Logo
3:29 pm - 7:25 pmPDX-ICN
34h 56m2 stops
Multiple Airlines Logo
8:35 pm - 9:20 pmICN-PDX
17h 45m1 stop
$786Multiple Airlines
Find Deal
Mon, Nov 10 - Thu, Dec 11
Multiple Airlines Logo
3:26 pm - 4:20 pmPDX-ICN
31h 54m2 stops
Multiple Airlines Logo
8:35 pm - 4:50 pmICN-PDX
13h 15m1 stop
$787Multiple Airlines
Find Deal
Fri, Nov 7 - Fri, Dec 12
Multiple Airlines Logo
12:43 pm - 4:50 amPDX-ICN
48h 07m2 stops
Multiple Airlines Logo
8:35 pm - 8:37 pmICN-PDX
16h 02m1 stop
$788Multiple Airlines
Find Deal
Sun, Oct 12 - Sun, Oct 26
Multiple Airlines Logo
5:41 pm - 7:25 pmPDX-ICN
32h 44m2 stops
Multiple Airlines Logo
8:35 pm - 5:47 pmICN-PDX
14h 12m1 stop
$789Multiple Airlines
Find Deal
Mon, Nov 3 - Thu, Nov 6
Multiple Airlines Logo
11:45 am - 3:45 pmPDX-ICN
36h 00m2 stops
Multiple Airlines Logo
9:25 pm - 5:34 amICN-PDX
25h 09m1 stop
$791Multiple Airlines
Find Deal
Mon, Oct 20 - Mon, Nov 3
Alaska Airlines Logo
7:30 am - 6:35 pmPDX-ICN
18h 05m1 stop
Alaska Airlines Logo
9:25 pm - 5:34 amICN-PDX
25h 09m1 stop
$848Alaska Airlines
Find Deal
Fri, Nov 7 - Fri, Nov 14

Alaska Airlines flights from Portland to Incheon Intl Airport

Our best Alaska Airlines deals on Portland to Incheon Intl Airport flight tickets
Alaska Airlines
Nov 7
PDX7:30 amPortland
18h 05m
1 stop
ICN6:35 pmIncheon Intl
Nov 14
ICN9:25 pmIncheon Intl
25h 09m
1 stop
PDX5:34 amPortland
$848
Find similar
Alaska Airlines
Oct 1
PDX9:40 amPortland
16h 55m
1 stop
ICN6:35 pmIncheon Intl
Oct 17
ICN8:35 pmIncheon Intl
19h 43m
1 stop
PDX12:18 amPortland
$892
Find similar
Alaska Airlines
Oct 1
PDX6:05 amPortland
20h 30m
1 stop
ICN6:35 pmIncheon Intl
Oct 16
ICN8:35 pmIncheon Intl
16h 15m
2 stops
PDX8:50 pmPortland
$1,137
Find similar

United Airlines flights from Portland to Incheon Intl Airport

Our best United Airlines deals on Portland to Incheon Intl Airport flight tickets
United Airlines
Sep 23
PDX5:30 amPortland
17h 30m
1 stop
ICN3:00 pmIncheon Intl
Sep 30
ICN4:50 pmIncheon Intl
32h 39m
2 stops
PDX9:29 amPortland
$897
Find similar
United Airlines
Sep 30
PDX7:30 amPortland
15h 30m
1 stop
ICN3:00 pmIncheon Intl
Oct 2
ICN11:30 amIncheon Intl
25h 36m
2 stops
PDX9:06 pmPortland
$1,054
Find similar
United Airlines
Sep 24
PDX10:55 amPortland
25h 25m
2 stops
ICN4:20 amIncheon Intl
Oct 25
ICN4:50 pmIncheon Intl
32h 48m
2 stops
PDX9:38 amPortland
$1,112
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momondo Fare Finder

 
Customize your flight search to find flights from Portland to Incheon Intl Airport 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, momondo users made 832,500 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Portland to Incheon Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sat 11/1

1:21 pm-4:20 pm

1 stop34h 59m

Incheon Intl

Sat 11/8

8:35 pm-1:50 pm

1 stop34h 15m

$770

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sun 11/9

3:26 pm-4:20 pm

2 stops31h 54m

Incheon Intl

Fri 12/12

8:35 pm-4:50 pm

1 stop13h 15m

$783

PortlandIncheon

PDX - ICN

PDXICN

Portland

Mon 11/10

3:29 pm-7:25 pm

2 stops34h 56m

Incheon Intl

Fri 12/12

8:35 pm-4:50 pm

1 stop13h 15m

$784

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sat 11/8

1:21 pm-4:20 pm

1 stop33h 59m

Incheon Intl

Fri 12/12

8:35 pm-4:50 pm

1 stop13h 15m

$785

PortlandIncheon

PDX - ICN

PDXICN

Portland

Mon 11/10

3:29 pm-7:25 pm

2 stops34h 56m

Incheon Intl

Thu 12/11

8:35 pm-9:20 pm

1 stop17h 45m

$786

PortlandIncheon

PDX - ICN

PDXICN

Portland

Fri 11/7

3:26 pm-4:20 pm

2 stops31h 54m

Incheon Intl

Fri 12/12

8:35 pm-4:50 pm

1 stop13h 15m

$787

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sun 10/12

12:43 pm-4:50 am

2 stops48h 07m

Incheon Intl

Sun 10/26

8:35 pm-8:37 pm

1 stop16h 02m

$788

PortlandIncheon

PDX - ICN

PDXICN

Portland

Mon 11/3

5:41 pm-7:25 pm

2 stops32h 44m

Incheon Intl

Thu 11/6

8:35 pm-5:47 pm

1 stop14h 12m

$789

PortlandIncheon

PDX - ICN

PDXICN

Portland

Mon 10/20

11:45 am-3:45 pm

2 stops36h 00m

Incheon Intl

Mon 11/3

9:25 pm-5:34 am

1 stop25h 09m

$791

PortlandIncheon

PDX - ICN

PDXICN

Portland

Fri 11/7

7:30 am-6:35 pm

1 stop18h 05m

Incheon Intl

Fri 11/14

9:25 pm-5:34 am

1 stop25h 09m

$848

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seoul from

How to get the cheapest flight ticket from Portland to Incheon Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Incheon Intl Airport?

The cheapest month to fly to Incheon Intl Airport from Portland is in January. Flight prices, which tend to average around $907, are often lower during this time because this is during the off-season. If you are unable to visit Incheon Intl Airport during the month of January, then departing from Portland during the month February is also very affordable. Most momondo users find prices during this month for around $956.

What is the cheapest day to depart on your flight to Incheon Intl Airport?

The cheapest day to depart from Portland to Incheon Intl Airport is on a Monday when prices can be found for as low as $1,346. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,477. These prices are subject to change though, so be sure to set up a Price Alert for flights to Incheon Intl Airport.

What is the cheapest time of day to depart on your flight to Incheon Intl Airport?

In the afternoon is the cheapest time of day to fly from Portland to Incheon Intl Airport when you can find flight prices for as low as $886. Flying to Incheon Intl Airport in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $1,498 on average. Flights to Incheon Intl Airport from Portland in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to Incheon Intl Airport?

You are more likely to see cheaper flights to Incheon Intl Airport from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Incheon Intl Airport for around $1,153 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Incheon Intl Airport from Portland for as low as $989 on momondo.

How have Portland to Incheon Intl Airport flight prices changed over time?

As of September 2025, prices for Portland to Incheon Intl Airport flights are approximately 24% cheaper when compared to flights at the same time last year.

When to book flights from Portland to Incheon Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Incheon Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland to Incheon Intl Airport (PDX to ICN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Incheon Intl Airport

Direct flights

None
There are no direct flights from Portland to Incheon Intl Airport. There are no popular flight routes from Portland to Incheon Intl Airport.
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  • How far is Portland to Incheon Intl by plane?

    Portland and Incheon Intl are 5272.8 mi apart from one another. Flights usually cover this in 17h 30m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Portland Airport to Incheon Intl Airport?

    Prices for flights from Portland Airport to Incheon Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Portland Airport to Incheon Intl Airport?

  • How old do you have to be to fly from Portland Airport to Incheon Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to Incheon Intl Airport.

  • What documentation or ID do you need to fly to Incheon Intl Airport?

    The travel and health documents you'll need for your trip to Incheon Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Incheon Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Portland to Incheon Intl Airport?

Best airlines flying from Portland to Incheon Intl Airport

Compare and see reviews for airlines that fly from Portland to Incheon Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
Hawaiian AirlinesPriceFrom $767Free CancellationRating
7.8
2,729 reviews
Search Hawaiian Airlines flights
Air CanadaPriceFrom $809Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
DeltaPriceFrom $849Free CancellationRating
7.9
7,961 reviews
Search Delta flights
United AirlinesPriceFrom $907Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
Asiana AirlinesPriceFrom $912Free CancellationRating
8.2
481 reviews
Search Asiana Airlines flights
Alaska AirlinesPriceFrom $951Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
Korean AirPriceFrom $1,084Free CancellationRating
8.4
1,140 reviews
Search Korean Air flights

Traveling to a place near Seoul?

Book flights to Seoul if you plan to visit one of these locations
Suwon
Daejeon
Seongnam
Anyang

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Seoul?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Portland to Seoul for you.

Can I find flights from Portland to Seoul with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Seoul from Portland with this policy.

How can momondo help me find flights from Portland to Seoul?

Once all potential Portland to Seoul flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Portland to Seoul right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Portland to Seoul flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Incheon Intl Airport trip

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