$1,000 Cheap Flights from Portland (PWM) to Seoul (GMP)

View $1,000 flight on Mon, Sep 7, 2026Opens in a new window

Popular airlines from Portland Intl. Jetport Airport (PWM) to Gimpo Intl. Airport (GMP)

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Portland to Seoul (PWM-GMP)

Prices were available within the past 7 days and start at $1,000 for one-way flights and $1,858 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Japan Airlines
Wed, May 20 - Fri, May 29
PWM
Portland
GMP
Seoul
$1,858 Roundtrip, found 4 days ago
$1,858
Roundtrip
found 4 days ago
Select Japan Airlines flight, departing Wed, May 20 from Portland to Seoul, returning Fri, May 29, priced at $1,858 found 4 days ago
United
Thu, Jan 29 - Thu, Feb 5
PWM
Portland
GMP
Seoul
$2,060 Roundtrip, found 3 days ago
$2,060
Roundtrip
found 3 days ago
Select United flight, departing Thu, Jan 29 from Portland to Seoul, returning Thu, Feb 5, priced at $2,060 found 3 days ago
United
Thu, Jan 29 - Thu, Feb 5
PWM
Portland
GMP
Seoul
$2,221 Roundtrip, found 3 days ago
$2,221
Roundtrip
found 3 days ago
Select United flight, departing Thu, Jan 29 from Portland to Seoul, returning Thu, Feb 5, priced at $2,221 found 3 days ago
American Airlines
Thu, May 7 - Thu, May 21
PWM
Portland
GMP
Seoul
$2,280 Roundtrip, found 1 day ago
$2,280
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, May 7 from Portland to Seoul, returning Thu, May 21, priced at $2,280 found 1 day ago
American Airlines
Thu, May 7 - Thu, May 21
PWM
Portland
GMP
Seoul
$2,300 Roundtrip, found 1 day ago
$2,300
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, May 7 from Portland to Seoul, returning Thu, May 21, priced at $2,300 found 1 day ago
Japan Airlines
Thu, May 7 - Thu, May 21
PWM
Portland
GMP
Seoul
$2,320 Roundtrip, found 1 day ago
$2,320
Roundtrip
found 1 day ago
Select Japan Airlines flight, departing Thu, May 7 from Portland to Seoul, returning Thu, May 21, priced at $2,320 found 1 day ago
American Airlines
Mon, May 18 - Sat, May 30
PWM
Portland
GMP
Seoul
$2,467 Roundtrip, found 4 days ago
$2,467
Roundtrip
found 4 days ago
Select American Airlines flight, departing Mon, May 18 from Portland to Seoul, returning Sat, May 30, priced at $2,467 found 4 days ago
United
Thu, Jan 29 - Thu, Feb 5
PWM
Portland
GMP
Seoul
$2,468 Roundtrip, found 3 days ago
$2,468
Roundtrip
found 3 days ago
Select United flight, departing Thu, Jan 29 from Portland to Seoul, returning Thu, Feb 5, priced at $2,468 found 3 days ago
American Airlines
Thu, May 7 - Thu, May 21
PWM
Portland
GMP
Seoul
$2,471 Roundtrip, found 1 day ago
$2,471
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, May 7 from Portland to Seoul, returning Thu, May 21, priced at $2,471 found 1 day ago
JetBlue Airways
Mon, May 18 - Sat, May 30
PWM
Portland
GMP
Seoul
$2,953 Roundtrip, found 4 days ago
$2,953
Roundtrip
found 4 days ago
Select JetBlue Airways flight, departing Mon, May 18 from Portland to Seoul, returning Sat, May 30, priced at $2,953 found 4 days ago

Frequently asked questions

How much does a flight from Portland Intl. Jetport Airport (PWM) to Gimpo Intl. Airport (GMP) cost?
Snag a cheap one-way flight from $1,000 or cheap return flight from $1,858 from Portland Intl. Jetport Airport (PWM) to Gimpo Intl. Airport (GMP) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Portland Intl. Jetport Airport (PWM) to Gimpo Intl. Airport (GMP)?
The cheapest month to fly from PWM to GMP is May, when demand is low. Off-peak season is typically when airlines offer better prices between these airports.
What is the cheapest airline that flies from Portland Intl. Jetport Airport (PWM) to Gimpo Intl. Airport (GMP)?
To find the cheapest airline that'll fly you from PWM to GMP, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Portland Intl. Jetport Airport (PWM) to Gimpo Intl. Airport (GMP)?
There are no daily direct flights available from Portland Intl. Jetport Airport (PWM) to Gimpo Intl. Airport (GMP). But you can choose flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be on your way before you know it.
What day of the week has the most flights from PWM to GMP?
Generally you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can vary depending on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Portland Intl. Jetport Airport (PWM) to Gimpo Intl. Airport (GMP)?
To reach Gimpo Intl. Airport (GMP) on time, pick a flight that leaves Portland Intl. Jetport Airport (PWM) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Portland Intl. Jetport Airport (PWM) to Gimpo Intl. Airport (GMP) last-minute?
Holding off until just before your departure to book your flight from PWM to GMP often results in higher prices. While it's possible to find some last-minute discounts, there's no guarantee. Be flexible with your travel plans for a better chance of snagging a bargain.
Is it cheaper to book a PWM to GMP flight and hotel package?
You'll typically save money by booking a PWM to GMP flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. After selecting your preferred accommodations and flights, you can add extras such as tours, activities and car rentals.
Can I cancel or change the date of my flight from Portland Intl. Jetport Airport (PWM) to Gimpo Intl. Airport (GMP)?
It's generally possible to cancel or reschedule your PWM to GMP flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Portland Intl. Jetport
Destination airport
Gimpo Intl.
Roundtrip price
$1,857
Distance
6724 mi

Book with confidence

Portland to Seoul Flights

The cheapest times to fly from Portland to Seoul

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Portland to Seoul are during the month of May. You can find some of the cheapest flights from Portland to Seoul with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Portland to Seoul

Sunday is one of the best days to book for cheap flights from Portland to Seoul: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Portland to Seoul

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Portland to Seoul in 2026. You can also book with separate airlines for your outbound and return journeys, from $1,000 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Portland to Seoul flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Portland to Seoul airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Portland to Seoul Flights
*Available to One Key members.