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$428+ 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — PHL
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
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 August 14, 2025.

Round-trip from

$505
(Tourvis)

One-way from

$428
(FlightHub)

Popular in

April

Cheapest in

September

Average price

$886
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. 14% potential increase in price ($158 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($48 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 14, 2025.

This Tourvis deal was found by Cheapflights users on 8/14. 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 Tourvis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/258:35 pmICN - PHL
1 stop70h 32mHawaiian Airlines
Thu 1/86:35 pmPHL - ICN
1 stop34h 00mHawaiian Airlines
Deal found 8/14$505
This American Airlines deal was found by Cheapflights users on 8/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/155:25 pmICN - PHL
1 stop21h 07mAmerican Airlines
Wed 9/246:42 amPHL - ICN
1 stop19h 48mAmerican Airlines
Deal found 8/14$513
This Hawaiian Airlines deal was found by Cheapflights users on 8/12. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/228:35 pmICN - PHL
1 stop34h 22mHawaiian Airlines
Fri 9/267:22 amPHL - ICN
1 stop22h 13mHawaiian Airlines
Deal found 8/12$515
This Hawaiian Airlines deal was found by Cheapflights users on 8/14. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/38:35 pmICN - PHL
1 stop23h 07mHawaiian Airlines
Fri 11/77:12 pmPHL - ICN
1 stop33h 23mHawaiian Airlines
Deal found 8/14$517
This American Airlines deal was found by Cheapflights users on 8/13. 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.
Thu 9/115:25 pmICN - PHL
1 stop20h 25mAmerican Airlines
Mon 9/295:15 pmPHL - ICN
1 stop33h 15mAmerican Airlines
Deal found 8/13$519
This Alaska Airlines deal was found by Cheapflights users on 8/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/278:35 pmICN - PHL
1 stop22h 27mAlaska Airlines
Sat 10/47:11 pmPHL - ICN
1 stop34h 24mAlaska Airlines
Deal found 8/12$531
This Alaska Airlines deal was found by Cheapflights users on 8/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/138:35 pmICN - PHL
1 stop22h 05mAlaska Airlines
Fri 10/177:11 pmPHL - ICN
1 stop34h 24mAlaska Airlines
Deal found 8/14$532
This United Airlines deal was found by Cheapflights users on 8/13. 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 9/1611:30 amICN - PHL
1 stop18h 58mUnited Airlines
Mon 9/226:30 amPHL - ICN
1 stop19h 30mUnited Airlines
Deal found 8/13$533
This United Airlines deal was found by Cheapflights users on 8/13. 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.
Thu 9/114:50 pmICN - PHL
2 stops29h 43mUnited Airlines
Sun 9/287:58 pmPHL - ICN
2 stops30h 02mUnited Airlines
Deal found 8/13$534
This Ovago deal was found by Cheapflights users on 8/13. 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.
Thu 9/117:55 amGMP - PHL
2 stops19h 52mJapan Airlines
Sun 9/289:15 pmPHL - GMP
2 stops24h 30mJapan Airlines
Deal found 8/13$1,053
This Ovago deal was found by Cheapflights users on 8/13. 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.
Thu 9/117:55 amGMP - PHL
2 stops19h 52mJapan Airlines
Mon 9/296:42 amPHL - GMP
2 stops26h 08mJapan Airlines
Deal found 8/13$1,074
This FlightHub deal was found by Cheapflights users on 8/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/187:55 amGMP - PHL
2 stops27h 30mJapan Airlines
Fri 10/246:20 amPHL - GMP
2 stops26h 30mJapan Airlines
Deal found 8/14$1,198

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 August 14, 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

8:35 pm-5:07 am

1 stop70h 32m

Philadelphia

Thu 1/8

6:35 pm-6:35 pm

1 stop34h 00m

$505

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Mon 9/15

5:25 pm-1:32 am

1 stop21h 07m

Philadelphia

Wed 9/24

6:42 am-3:30 pm

1 stop19h 48m

$513

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Mon 9/22

8:35 pm-5:57 pm

1 stop34h 22m

Philadelphia

Fri 9/26

7:22 am-6:35 pm

1 stop22h 13m

$515

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Fri 10/10

8:35 pm-5:40 am

1 stop22h 05m

Philadelphia

Tue 10/14

7:11 pm-6:35 pm

1 stop34h 24m

$515

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Mon 11/3

8:35 pm-5:42 am

1 stop23h 07m

Philadelphia

Fri 11/7

7:12 pm-6:35 pm

1 stop33h 23m

$517

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Thu 9/11

5:25 pm-12:50 am

1 stop20h 25m

Philadelphia

Mon 9/29

5:15 pm-3:30 pm

1 stop33h 15m

$519

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Sat 9/27

8:35 pm-6:02 am

1 stop22h 27m

Philadelphia

Sat 10/4

7:11 pm-6:35 pm

1 stop34h 24m

$531

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Mon 10/13

8:35 pm-5:40 am

1 stop22h 05m

Philadelphia

Fri 10/17

7:11 pm-6:35 pm

1 stop34h 24m

$532

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Tue 9/16

11:30 am-5:28 pm

1 stop18h 58m

Philadelphia

Mon 9/22

8:15 am-4:20 am

2 stops31h 05m

$533

SeoulPhiladelphia

GMP - PHL

GMPPHL

Seoul Gimpo Intl

Thu 9/11

7:55 am-2:47 pm

2 stops19h 52m

Philadelphia

Sun 9/28

9:15 pm-10:45 am

2 stops24h 30m

$1,053

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 37 results
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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, August is the cheapest month in which you can book a flight from Seoul to Philadelphia (average of $236). Flying from Seoul to Philadelphia in March is currently the most expensive (average of $295). 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 August 14, 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 afternoon tend to be the most expensive. A flight at noon could potentially save you up to 51% 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 August 14, 2025.
Read through reviews of airlines operating flights from Seoul to Philadelphia, such as Korean Air, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,131 reviews

Crew

8.7

Boarding

8.5

Food

8.1

Comfort

8.3

Entertainment

8.2

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
1,131 reviews
Korean Air
8.4
Very good
1,131 reviews

Crew

8.7

Boarding

8.5

Food

8.1

Comfort

8.3

Entertainment

8.2

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
1,131 reviews

Crew

8.7

Boarding

8.5

Food

8.1

Comfort

8.3

Entertainment

8.2

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!!
United Airlines
7.4
Good
8,916 reviews
Korean Air
8.4
Very good
1,131 reviews

Crew

8.7

Boarding

8.5

Food

8.1

Comfort

8.3

Entertainment

8.2

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
9,949 reviews
Korean Air
8.4
Very good
1,131 reviews

Crew

8.7

Boarding

8.5

Food

8.1

Comfort

8.3

Entertainment

8.2

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. 4 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.

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

    United Airlines, at $659, was found to be the cheapest airline from Seoul to Philadelphia.Alternate airlines to your destination round-trip include Delta and Korean Air. You may be able to fly from Seoul to Philadelphia for 30% 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, August is the cheapest month in which you can book a flight from Seoul to Philadelphia (average of $236). Flying from Seoul to Philadelphia in March is currently the most expensive (average of $295). 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
Vineland
Wildwood
King of Prussia
Pottstown
Cherry Hill
Ocean City
Reading
Millville
Ephrata
Camden
Dewey Beach
Dover
Elkton
Essington
Willow Grove
Newark
Chester
Exton
Glen Mills
Springfield

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from Seoul to Philadelphia

Discover the top 4 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$659Average$727FlexibilityNo cancel feeOn-time69%
DeltaCheapest$695Average$911FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$782Average$1,086FlexibilityNo cancel feeOn-time81%
Air CanadaCheapest$811Average$937FlexibilityNo cancel feeOn-time67%

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