$850 Cheap Flights from Seoul (GMP) to Philadelphia (PHL)

View $850 flight on Wed, Dec 10, 2025Opens in a new window

Popular airlines from Gimpo Intl. Airport (GMP) to Philadelphia Intl. Airport (PHL)

Cheap Flights from Seoul to Philadelphia (GMP-PHL)

Prices were available within the past 7 days and start at $850 for one-way flights and $1,463 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

All Nippon Airways
Mon, Jun 1 - Tue, Jun 30
GMP
Seoul
PHL
Philadelphia
$1,463 Roundtrip, found 3 days ago
$1,463
Roundtrip
found 3 days ago
Select All Nippon Airways flight, departing Mon, Jun 1 from Seoul to Philadelphia, returning Tue, Jun 30, priced at $1,463 found 3 days ago
Japan Airlines
Wed, Nov 12 - Mon, Nov 17
GMP
Seoul
PHL
Philadelphia
$1,527 Roundtrip, found 4 days ago
$1,527
Roundtrip
found 4 days ago
Select Japan Airlines flight, departing Wed, Nov 12 from Seoul to Philadelphia, returning Mon, Nov 17, priced at $1,527 found 4 days ago
All Nippon Airways
Mon, Jun 1 - Tue, Jun 30
GMP
Seoul
PHL
Philadelphia
$1,533 Roundtrip, found 3 days ago
$1,533
Roundtrip
found 3 days ago
Select All Nippon Airways flight, departing Mon, Jun 1 from Seoul to Philadelphia, returning Tue, Jun 30, priced at $1,533 found 3 days ago
Japan Airlines
Wed, Nov 12 - Mon, Nov 17
GMP
Seoul
PHL
Philadelphia
$1,547 Roundtrip, found 4 days ago
$1,547
Roundtrip
found 4 days ago
Select Japan Airlines flight, departing Wed, Nov 12 from Seoul to Philadelphia, returning Mon, Nov 17, priced at $1,547 found 4 days ago
Asiana Airlines
Fri, Jul 31 - Tue, Aug 4
GMP
Seoul
PHL
Philadelphia
$1,557 Roundtrip, found 1 day ago
$1,557
Roundtrip
found 1 day ago
Select Asiana Airlines flight, departing Fri, Jul 31 from Seoul to Philadelphia, returning Tue, Aug 4, priced at $1,557 found 1 day ago
Japan Airlines
Wed, Nov 12 - Mon, Nov 17
GMP
Seoul
PHL
Philadelphia
$1,563 Roundtrip, found 4 days ago
$1,563
Roundtrip
found 4 days ago
Select Japan Airlines flight, departing Wed, Nov 12 from Seoul to Philadelphia, returning Mon, Nov 17, priced at $1,563 found 4 days ago
Japan Airlines
Tue, Apr 14 - Tue, Apr 21
GMP
Seoul
PHL
Philadelphia
$1,564 Roundtrip, found 2 days ago
$1,564
Roundtrip
found 2 days ago
Select Japan Airlines flight, departing Tue, Apr 14 from Seoul to Philadelphia, returning Tue, Apr 21, priced at $1,564 found 2 days ago
Asiana Airlines
Fri, Jul 31 - Tue, Aug 4
GMP
Seoul
PHL
Philadelphia
$1,569 Roundtrip, found 1 day ago
$1,569
Roundtrip
found 1 day ago
Select Asiana Airlines flight, departing Fri, Jul 31 from Seoul to Philadelphia, returning Tue, Aug 4, priced at $1,569 found 1 day ago
Japan Airlines
Wed, Nov 12 - Mon, Nov 17
GMP
Seoul
PHL
Philadelphia
$1,583 Roundtrip, found 4 days ago
$1,583
Roundtrip
found 4 days ago
Select Japan Airlines flight, departing Wed, Nov 12 from Seoul to Philadelphia, returning Mon, Nov 17, priced at $1,583 found 4 days ago
Japan Airlines
Wed, Nov 19 - Wed, Nov 26
GMP
Seoul
PHL
Philadelphia
$1,598 Roundtrip, found 2 days ago
$1,598
Roundtrip
found 2 days ago
Select Japan Airlines flight, departing Wed, Nov 19 from Seoul to Philadelphia, returning Wed, Nov 26, priced at $1,598 found 2 days ago

Alternative airports near Philadelphia

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Philadelphia Intl. PHL. Cheapest and Closest option available. Average driving time to city center is 17 minutes. Flights from $1,639
PHL
Philadelphia Intl.
CheapestClosest
Average driving time to city center17 min
Flights from $1,639

Frequently asked questions

How much does a flight from Gimpo Intl. Airport (GMP) to Philadelphia Intl. Airport (PHL) cost?
Grab a cheap one-way flight from $850 or cheap return flight from $1,463 from Gimpo Intl. Airport (GMP) to Philadelphia Intl. Airport (PHL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Gimpo Intl. Airport (GMP) to Philadelphia Intl. Airport (PHL)?
Flying in June is a good way to save, as it's the cheapest month for flights between GMP and PHL. You'll usually find the lowest prices during off-peak months.
What is the cheapest airline that flies from Gimpo Intl. Airport (GMP) to Philadelphia Intl. Airport (PHL)?
Use the filter tool on Expedia to compare different airlines and find the most affordable carrier that'll fly you from GMP to PHL. Then, sort your results by "Price (lowest to highest)" to snag a good deal.
How many flights per day from Gimpo Intl. Airport (GMP) to Philadelphia Intl. Airport (PHL)?
There are no daily direct flights from Gimpo Intl. Airport (GMP) to Philadelphia Intl. Airport (PHL). But you can choose flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be cruising above the clouds in no time.
What day of the week has the most flights from GMP to PHL?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change depending on a number of 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 Philadelphia Intl. Airport (PHL)?
To avoid potential delays on the Gimpo Intl. Airport (GMP) to Philadelphia Intl. Airport (PHL) route, aim to travel before 3 PM. Later departures have a 22% higher chance of being canceled.**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 Philadelphia Intl. Airport (PHL) last-minute?
Booking your flight from GMP to PHL just before your getaway is usually more expensive. But if you're flexible with your itinerary, you could snag a cheap last-minute fare.
Is it cheaper to book a GMP to PHL flight and hotel package?
Compared with arranging flights and hotels separately, booking a GMP to PHL flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one easy place will take the stress out of travel planning. Simply pick your flights and select from our wide range of hotels, then customize your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Gimpo Intl. Airport (GMP) to Philadelphia Intl. Airport (PHL)?
Typically, it's possible to cancel or reschedule your GMP to PHL flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
Gimpo Intl.
Destination airport
Philadelphia Intl.
Airlines serving
Japan Airlines
Roundtrip price
$1,463
Distance
6906 mi

Book with confidence

Seoul to Philadelphia Flights

The cheapest times to fly from Seoul to Philadelphia

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

 

The best time to book a flight from Seoul to Philadelphia

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

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 Philadelphia in 2025. You can also book with separate airlines for your outbound and return journeys, from $850 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 Philadelphia 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 Philadelphia 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 Philadelphia Flights

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*Available to One Key members.