$510 Cheap Flights from Seoul (GMP) to Portland (PDX)

View $510 flight on Tue, Mar 3, 2026Opens in a new window

Popular airlines from Gimpo Intl. Airport (GMP) to Portland International Airport (PDX)

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Cheap Flights from Seoul to Portland (GMP-PDX)

Prices were available within the past 7 days and start at $510 for one-way flights and $1,083 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

All Nippon Airways
Mon, Dec 15 - Tue, Dec 30
GMP
Seoul
PDX
Portland
$1,083 Roundtrip, found 3 days ago
$1,083
Roundtrip
found 3 days ago
Select All Nippon Airways flight, departing Mon, Dec 15 from Seoul to Portland, returning Tue, Dec 30, priced at $1,083 found 3 days ago
All Nippon Airways
Mon, Dec 15 - Tue, Dec 30
GMP
Seoul
PDX
Portland
$1,153 Roundtrip, found 3 days ago
$1,153
Roundtrip
found 3 days ago
Select All Nippon Airways flight, departing Mon, Dec 15 from Seoul to Portland, returning Tue, Dec 30, priced at $1,153 found 3 days ago
Asiana Airlines
Mon, Jul 13 - Mon, Aug 17
GMP
Seoul
PDX
Portland
$1,173 Roundtrip, found 1 day ago
$1,173
Roundtrip
found 1 day ago
Select Asiana Airlines flight, departing Mon, Jul 13 from Seoul to Portland, returning Mon, Aug 17, priced at $1,173 found 1 day ago
All Nippon Airways
Thu, Feb 5 - Thu, Feb 12
GMP
Seoul
PDX
Portland
$1,188 Roundtrip, found 3 days ago
$1,188
Roundtrip
found 3 days ago
Select All Nippon Airways flight, departing Thu, Feb 5 from Seoul to Portland, returning Thu, Feb 12, priced at $1,188 found 3 days ago
Korean Air
Mon, Jul 13 - Mon, Aug 17
GMP
Seoul
PDX
Portland
$1,197 Roundtrip, found 1 day ago
$1,197
Roundtrip
found 1 day ago
Select Korean Air flight, departing Mon, Jul 13 from Seoul to Portland, returning Mon, Aug 17, priced at $1,197 found 1 day ago
All Nippon Airways
Wed, Nov 12 - Fri, Feb 6
GMP
Seoul
PDX
Portland
$1,241 Roundtrip, found 3 days ago
$1,241
Roundtrip
found 3 days ago
Select All Nippon Airways flight, departing Wed, Nov 12 from Seoul to Portland, returning Fri, Feb 6, priced at $1,241 found 3 days ago
Asiana Airlines
Mon, Jul 13 - Mon, Aug 17
GMP
Seoul
PDX
Portland
$1,243 Roundtrip, found 1 day ago
$1,243
Roundtrip
found 1 day ago
Select Asiana Airlines flight, departing Mon, Jul 13 from Seoul to Portland, returning Mon, Aug 17, priced at $1,243 found 1 day ago
Asiana Airlines
Mon, Jul 13 - Mon, Aug 17
GMP
Seoul
PDX
Portland
$1,252 Roundtrip, found 1 day ago
$1,252
Roundtrip
found 1 day ago
Select Asiana Airlines flight, departing Mon, Jul 13 from Seoul to Portland, returning Mon, Aug 17, priced at $1,252 found 1 day ago
Air China
Mon, Jul 13 - Mon, Aug 17
GMP
Seoul
PDX
Portland
$1,338 Roundtrip, found 1 day ago
$1,338
Roundtrip
found 1 day ago
Select Air China flight, departing Mon, Jul 13 from Seoul to Portland, returning Mon, Aug 17, priced at $1,338 found 1 day ago
Japan Airlines
Wed, Nov 12 - Wed, Jan 14
GMP
Seoul
PDX
Portland
$1,412 Roundtrip, found 4 days ago
$1,412
Roundtrip
found 4 days ago
Select Japan Airlines flight, departing Wed, Nov 12 from Seoul to Portland, returning Wed, Jan 14, priced at $1,412 found 4 days ago

Frequently asked questions

How much does a flight from Gimpo Intl. Airport (GMP) to Portland Intl. Airport (PDX) cost?
Get a cheap one-way flight from $510 or cheap return flight from $1,083 from Gimpo Intl. Airport (GMP) to Portland Intl. Airport (PDX) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Gimpo Intl. Airport (GMP) to Portland Intl. Airport (PDX)?
December is the cheapest month to fly from GMP to PDX. Timing your trip outside of the busy season is often the key to finding a great deal.
What is the cheapest airline that flies from Gimpo Intl. Airport (GMP) to Portland Intl. Airport (PDX)?
To find the cheapest airline flying from GMP to PDX, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Gimpo Intl. Airport (GMP) to Portland Intl. Airport (PDX)?
You'll need to hop on a flight with a layover when traveling from Gimpo Intl. Airport (GMP) to Portland Intl. Airport (PDX). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from GMP to PDX?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary depending on various factors, such as the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Gimpo Intl. Airport (GMP) to Portland Intl. Airport (PDX)?
To avoid potential delays on the Gimpo Intl. Airport (GMP) to Portland Intl. Airport (PDX) route, aim to fly before 3 PM. Departures after this time have a 22% higher chance of cancellation.**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 Gimpo Intl. Airport (GMP) to Portland Intl. Airport (PDX) last-minute?
Last-minute bookings from GMP to PDX are generally more expensive. For the best prices, start looking for flights as soon as possible. That said, if you can play around with your travel dates, it's possible to score a cheap ticket right before your trip.
Is it cheaper to book a GMP to PDX flight and hotel package?
You'll typically save money by securing a GMP to PDX flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one place. After choosing your ideal flights and accommodations, you can add extras such as car rentals, tours and activities.
Can I cancel or change the date of my flight from Gimpo Intl. Airport (GMP) to Portland Intl. Airport (PDX)?
If you booked your GMP to PDX flight in the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Gimpo Intl.
Destination airport
Portland Intl.
Airlines serving
All Nippon Airways, Japan Airlines
Roundtrip price
$1,082
Distance
5257 mi

Book with confidence

Seoul to Portland Flights

The cheapest times to fly from Seoul to Portland

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 Seoul to Portland are during the month of December. You can find some of the cheapest flights from Seoul to Portland with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seoul to Portland

Sunday is one of the best days to book for cheap flights from Seoul to Portland: 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 Seoul to Portland

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 Seoul to Portland in 2025. You can also book with separate airlines for your outbound and return journeys, from $510 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 Seoul to Portland 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 Seoul to Portland 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.

 

Seoul to Portland Flights

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*Available to One Key members.