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$427+ Cheap flights from Seoul (SEL) to Philadelphia (PHL)

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 2/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — PHL
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Seoul to Philadelphia

Cheapest flights from Seoul to Philadelphia
Explore the most affordable flight options available from Seoul to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This WhyPayMore deal was found by Cheapflights users on 12/10. 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/268:35 pmICN - PHL
1 stop23h 02mHawaiian Airlines
Sat 1/107:06 pmPHL - ICN
1 stop33h 29mHawaiian Airlines
Deal found 12/10$504
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2612:45 pmICN - PHL
1 stop30h 26mUnited Airlines
Sat 1/105:00 pmPHL - ICN
2 stops33h 15mUnited Airlines
Deal found 12/10$574
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/268:05 pmICN - PHL
2 stops23h 45mDelta
Sat 1/105:17 pmPHL - ICN
2 stops32h 13mDelta
Deal found 12/10$634
This Booking.com deal was found by Cheapflights users on 12/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/215:55 pmICN - PHL
2 stops34h 55mAir Canada
Tue 12/233:30 pmPHL - ICN
2 stops35h 40mAir Canada
Deal found 12/10$1,297
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 12/128:35 pmICN - PHL
1 stop23h 11mMultiple Airlines
Sat 12/207:00 amPHL - ICN
1 stop21h 35mMultiple Airlines
Deal found 12/10$1,352
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/217:30 pmICN - PHL
1 stop18h 25mDelta
Tue 12/231:47 pmPHL - ICN
2 stops25h 23mDelta
Deal found 12/10$1,587
This Travelocity deal was found by Cheapflights users on 12/10. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2110:35 amICN - PHL
2 stops26h 11mMultiple Airlines
Mon 12/227:50 amPHL - ICN
2 stops42h 10mMultiple Airlines
Deal found 12/10$1,609
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/126:00 pmICN - PHL
3 stops34h 07mUnited Airlines
Sat 12/205:50 pmPHL - ICN
2 stops32h 25mUnited Airlines
Deal found 12/10$1,708
This Mytrip deal was found by Cheapflights users on 12/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/218:10 amICN - PHL
3 stops38h 57mMultiple Airlines
Tue 12/235:17 amPHL - ICN
2 stops34h 23mMultiple Airlines
Deal found 12/10$1,870
This FlightHub deal was found by Cheapflights users on 12/10. 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 12/218:10 pmICN - PHL
1 stop16h 36mAir Canada
Mon 12/224:35 pmPHL - ICN
2 stops33h 25mAir Canada
Deal found 12/10$1,873
This Ovago deal was found by Cheapflights users on 12/10. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/218:00 amGMP - PHL
2 stops20h 38mJapan Airlines
Tue 12/236:30 amPHL - GMP
2 stops25h 35mJapan Airlines
Deal found 12/10$1,929
This FlightHub deal was found by Cheapflights users on 12/10. 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 12/217:45 amGMP - PHL
2 stops27h 46mANA
Mon 12/228:27 amPHL - GMP
2 stops24h 03mANA
Deal found 12/10$2,683

Find flight deals from Seoul to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Seoul (SEL) to Philadelphia (PHL). 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$504
(WhyPayMore)

One-way from

$427
(Kiwi.com)

Popular in

April

Cheapest in

February

Average price

$1,235
Provider with most accurate pricing for Seoul (SEL)-Philadelphia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seoul (SEL)-Philadelphia flights.
Search Deals
From Seoul (SEL) to Philadelphia
Search Deals
One-way flight from Seoul (SEL) to Philadelphia
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($130 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seoul to Philadelphia 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 December 12, 2025.
Use the filters below to find and compare flights from Seoul to Philadelphia that are best for you.

Fly from

Seoul

Fly to

Philadelphia

Route

Depart

Return

Price

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Thu 2/19

12:45 pm-11:30 pm

2 stops24h 45m

Philadelphia

Mon 2/23

6:20 pm-4:15 pm

1 stop31h 55m

$539

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Fri 2/20

12:45 pm-11:30 pm

2 stops24h 45m

Philadelphia

Mon 3/2

6:20 pm-4:15 pm

1 stop31h 55m

$540

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Fri 1/30

12:45 pm-11:41 am

2 stops36h 56m

Philadelphia

Sun 2/8

5:50 pm-4:15 pm

2 stops32h 25m

$540

SeoulPhiladelphia

GMP - PHL

GMPPHL

Seoul Gimpo Intl

Sun 2/1

7:40 pm-12:55 pm

2 stops31h 15m

Philadelphia

Wed 2/4

7:17 am-10:55 am

2 stops37h 38m

$1,493

SeoulPhiladelphia

GMP - PHL

GMPPHL

Seoul Gimpo Intl

Fri 1/30

8:00 am-2:33 pm

2 stops20h 33m

Philadelphia

Sun 2/8

6:15 am-10:05 pm

2 stops25h 50m

$1,549

SeoulPhiladelphia

GMP - PHL

GMPPHL

Seoul Gimpo Intl

Fri 1/30

8:00 am-2:33 pm

2 stops20h 33m

Philadelphia

Sun 2/8

6:21 am-10:05 pm

2 stops25h 44m

$1,549

SeoulPhiladelphia

GMP - PHL

GMPPHL

Seoul Gimpo Intl

Fri 2/20

8:00 am-2:27 pm

2 stops20h 27m

Philadelphia

Mon 3/2

8:25 am-10:05 pm

2 stops23h 40m

$1,778

SeoulPhiladelphia

GMP - PHL

GMPPHL

Seoul Gimpo Intl

Wed 1/21

7:40 pm-2:33 pm

2 stops56h 53m

Philadelphia

Sat 2/14

7:15 am-10:55 am

2 stops37h 40m

$1,838

SeoulPhiladelphia

GMP - PHL

GMPPHL

Seoul Gimpo Intl

Wed 1/21

12:05 pm-8:16 pm

2 stops22h 11m

Philadelphia

Sat 2/14

7:15 am-10:05 pm

2 stops24h 50m

$2,695

SeoulPhiladelphia

GMP - PHL

GMPPHL

Seoul Gimpo Intl

Sat 3/21

7:50 pm-2:24 pm

2 stops31h 34m

Philadelphia

Thu 4/9

1:27 pm-11:05 am

2 stops32h 38m

$5,075

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 30 results
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Compare providers for flights from Seoul to Philadelphia

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seoul to Philadelphia in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seoul-Philadelphia flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seoul-Philadelphia flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Seoul-Philadelphia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seoul-Philadelphia flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seoul-Philadelphia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seoul to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Seoul 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 Seoul to Philadelphia

What is the cheapest month to book a flight from Seoul to Philadelphia?

Currently, December is the cheapest month in which you can book a flight from Seoul to Philadelphia (average of $285). Flying from Seoul to Philadelphia in July is currently the most expensive (average of $638). 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 SEL to PHL?

Find hourly flight availability from Seoul to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

One of the essential ways to save on airfare from Seoul to Philadelphia is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 46% on airfare.

How much does it cost to fly round-trip from Seoul to Philadelphia?

Reviews of airlines servicing Philadelphia

Get insights into the airlines that provide service to Philadelphia. 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 Philadelphia. Reviews last updated December 12, 2025.
Read through reviews of airlines operating flights from Seoul to Philadelphia, such as Korean Air and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,184 reviews

Entertainment

8.2

Food

8.1

Boarding

8.5

Comfort

8.3

Crew

8.7

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Korean Air
8.4
Very good
1,184 reviews
Korean Air
8.4
Very good
1,184 reviews

Entertainment

8.2

Food

8.1

Boarding

8.5

Comfort

8.3

Crew

8.7

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Delta
7.9
Good
8,007 reviews
Korean Air
8.4
Very good
1,184 reviews

Entertainment

8.2

Food

8.1

Boarding

8.5

Comfort

8.3

Crew

8.7

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Related info for your journey

Find useful and relevant information for your journey from Seoul to Philadelphia. 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 into for flights to Philadelphia from Seoul?

    Philadelphia (PHL), located 7.0 mi from the city center, is the airport you fly into when you book flights from Seoul to Philadelphia. 2 airlines have flights to Philadelphia from Seoul on a regular basis. Booking flights from Seoul to Philadelphia should not be difficult; the airport handles an average of 0 inbound flights from Seoul per day.

  • How long is the flight from Seoul to Philadelphia?

    There are many flights that can get you from Seoul to Philadelphia in 24h 45m. Fly via United Airlines or Japan Airlines to get the fastest option. There are 6915 mi between Seoul and Philadelphia. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Seoul to Philadelphia round-trip?

    Delta, at $626, was found to be the cheapest airline from Seoul to Philadelphia. An alternate airline flying to your destination would be Korean Air. You may be able to fly from Seoul to Philadelphia for 35% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Seoul to Philadelphia one-way?

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $379. Users have also found prices from $411 and $441 on United Airlines and Air Canada, respectively.

  • Can I find deals for flights from Seoul to Philadelphia that include hotel bookings?

    Yes. In addition to deals on Seoul to Philadelphia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seoul to Philadelphia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seoul to Philadelphia.

  • Can I find deals for business class flights from Seoul to Philadelphia?

    Yes. Cheapflights offers flight deals from Seoul to Philadelphia 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 Seoul to Philadelphia?

    Currently, December is the cheapest month in which you can book a flight from Seoul to Philadelphia (average of $285). Flying from Seoul to Philadelphia in July is currently the most expensive (average of $638). 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

Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Wildwood
Pottstown
King of Prussia
Reading
Ocean City
Cherry Hill
Lewes
Dewey Beach
Ephrata
Camden
Vineland
Milford
Dover
Elkton
Essington
Willow Grove
New Castle
Newark
Millville
Chester

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 2 airlines flying from Seoul to Philadelphia

Discover the top 2 airlines that operate flights from Seoul to Philadelphia. 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$626Average$882FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$782Average$1,144FlexibilityNo cancel feeOn-time81%

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