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$407+ 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 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — PHL
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
1 adult, Economy
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Cheap 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 October 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$492
(American Airlines)

One-way from

$407
(American Airlines)

Popular in

April

Cheapest in

October

Average price

$689
Provider with most accurate pricing for Seoul (SEL)-Philadelphia flight deals.
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Provider most trusted by Cheapflights users for Seoul (SEL)-Philadelphia flights.
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From Seoul (SEL) to Philadelphia
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One-way flight from Seoul (SEL) to Philadelphia
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Highest demand for flights based on searches. 17% potential increase in price ($191 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($46 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find 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 October 16, 2025.

This American Airlines deal was found by Cheapflights users on 10/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/315:55 pmICN - PHL
2 stops36h 42mAmerican Airlines
Tue 11/187:02 pmPHL - ICN
2 stops31h 43mAmerican Airlines
Deal found 10/15$492
This United Airlines deal was found by Cheapflights users on 10/14. 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.
Tue 12/236:00 pmICN - PHL
1 stop27h 04mUnited Airlines
Wed 2/256:20 pmPHL - ICN
1 stop21h 20mUnited Airlines
Deal found 10/14$520
This United Airlines deal was found by Cheapflights users on 10/14. 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.
Tue 12/236:00 pmICN - PHL
1 stop27h 04mUnited Airlines
Tue 2/2410:10 amPHL - ICN
2 stops29h 30mUnited Airlines
Deal found 10/14$533
This United Airlines deal was found by Cheapflights users on 10/14. 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.
Sat 12/206:00 pmICN - PHL
1 stop27h 04mUnited Airlines
Tue 2/248:30 amPHL - ICN
1 stop31h 10mUnited Airlines
Deal found 10/14$555
This United Airlines deal was found by Cheapflights users on 10/14. 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.
Sat 12/206:00 pmICN - PHL
1 stop27h 04mUnited Airlines
Wed 2/2512:55 pmPHL - ICN
2 stops26h 45mUnited Airlines
Deal found 10/14$568
This United Airlines deal was found by Cheapflights users on 10/14. 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.
Sat 12/206:00 pmICN - PHL
1 stop27h 04mUnited Airlines
Sat 2/286:20 pmPHL - ICN
1 stop31h 55mUnited Airlines
Deal found 10/14$590
This United Airlines deal was found by Cheapflights users on 10/14. 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.
Sun 12/2112:45 pmICN - PHL
1 stop32h 19mUnited Airlines
Tue 2/2410:10 amPHL - ICN
2 stops29h 30mUnited Airlines
Deal found 10/14$591
This Hanatour deal was found by Cheapflights users on 10/15. 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 Hanatour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/317:30 pmICN - PHL
1 stop28h 24mDelta
Mon 11/177:10 amPHL - ICN
1 stop19h 10mDelta
Deal found 10/15$601
This United Airlines deal was found by Cheapflights users on 10/14. 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.
Sat 12/206:00 pmICN - PHL
1 stop27h 04mUnited Airlines
Sun 3/16:10 amPHL - ICN
2 stops33h 30mUnited Airlines
Deal found 10/14$603
This Delta deal was found by Cheapflights users on 10/15. 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 10/317:30 pmICN - PHL
1 stop28h 24mDelta
Tue 11/186:14 amPHL - ICN
1 stop19h 16mDelta
Deal found 10/15$621
This Ovago deal was found by Cheapflights users on 10/16. 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.
Mon 11/1712:05 pmGMP - PHL
2 stops40h 33mJapan Airlines
Thu 12/42:19 pmPHL - GMP
2 stops30h 36mJapan Airlines
Deal found 10/16$1,543
This WhyPayMore deal was found by Cheapflights users on 10/16. 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 10/317:40 pmGMP - PHL
2 stops31h 45mJapan Airlines
Sun 11/27:35 amPHL - GMP
2 stops37h 20mJapan Airlines
Deal found 10/16$1,657

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 October 16, 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 12/25

6:00 pm-5:11 am

1 stop25h 11m

Philadelphia

Thu 2/26

10:10 am-5:40 am

2 stops29h 30m

$533

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Tue 12/23

6:00 pm-7:04 am

1 stop27h 04m

Philadelphia

Tue 2/24

10:10 am-5:40 am

2 stops29h 30m

$533

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Sun 12/21

12:45 pm-7:04 am

1 stop32h 19m

Philadelphia

Sun 3/1

6:20 pm-4:15 pm

1 stop31h 55m

$555

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Tue 12/23

12:45 pm-7:04 am

1 stop32h 19m

Philadelphia

Sat 2/28

6:20 pm-4:15 pm

1 stop31h 55m

$555

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Sat 12/20

6:00 pm-7:04 am

1 stop27h 04m

Philadelphia

Mon 3/2

10:10 am-5:40 am

2 stops29h 30m

$568

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Sun 12/21

12:45 pm-7:04 am

1 stop32h 19m

Philadelphia

Sat 2/28

8:30 am-4:15 pm

1 stop41h 45m

$590

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Sun 12/21

12:45 pm-7:04 am

1 stop32h 19m

Philadelphia

Wed 2/25

12:55 pm-5:40 am

2 stops26h 45m

$591

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Sun 12/21

12:45 pm-7:04 am

1 stop32h 19m

Philadelphia

Tue 2/24

10:10 am-5:40 am

2 stops29h 30m

$591

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Fri 12/26

7:40 pm-5:49 am

1 stop24h 09m

Philadelphia

Sat 1/10

5:20 pm-4:30 pm

2 stops33h 10m

$621

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Mon 11/17

8:05 pm-5:55 am

2 stops23h 50m

Philadelphia

Thu 12/4

6:15 am-4:30 pm

2 stops20h 15m

$624

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/16

Showing 1-10 of 36 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 October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seoul-Philadelphia flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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, October is the cheapest month in which you can book a flight from Seoul to Philadelphia (average of $335). Flying from Seoul to Philadelphia in July is currently the most expensive (average of $641). 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 October 16, 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.

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 October 16, 2025.
Read through reviews of airlines operating flights from Seoul to Philadelphia, such as Korean Air, Delta, and Air Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,149 reviews

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

Comfort

8.3

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
1,149 reviews
Korean Air
8.4
Very good
1,149 reviews

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

Comfort

8.3

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
8.0
Very good
7,980 reviews
Korean Air
8.4
Very good
1,149 reviews

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

Comfort

8.3

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!!
Air Canada
7.1
Good
10,304 reviews
Korean Air
8.4
Very good
1,149 reviews

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

Comfort

8.3

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. 3 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 25h 11m. Fly via United Airlines or ANA 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 $695, was found to be the cheapest airline from Seoul to Philadelphia.Alternate airlines to your destination round-trip include Korean Air and Air Canada. You may be able to fly from Seoul to Philadelphia for 23% less than the average price by searching for these airlines.

  • 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, October is the cheapest month in which you can book a flight from Seoul to Philadelphia (average of $335). Flying from Seoul to Philadelphia in July is currently the most expensive (average of $641). 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
King of Prussia
Pottstown
Reading
Ocean City
Cherry Hill
Dewey Beach
Ephrata
Camden
Vineland
Dover
Elkton
Essington
Willow Grove
Newark
Millville
Chester
Exton
Havre de Grace
Plymouth Meeting

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 3 airlines flying from Seoul to Philadelphia

Discover the top 3 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 October 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$695Average$907FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$782Average$1,144FlexibilityNo cancel feeOn-time81%
Air CanadaCheapest$811Average$975FlexibilityNo cancel feeOn-time67%

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