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$391+ Cheap flights from Philadelphia (PHL) to South Korea

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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ICN
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Philadelphia to South Korea

Keep the following information in mind while searching for Philadelphia to South Korea flight deals. Data was last updated September 15, 2025.

Round-trip from

$826
(Delta)

One-way from

$391
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$1,044
From Philadelphia to South Korea
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One-way flight from Philadelphia to South Korea
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Highest demand for flights based on searches. 7% potential increase in price ($90 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($49 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Philadelphia to South Korea

Cheapest flights from Philadelphia to South Korea
Explore the most affordable flight options available from Philadelphia to South Korea. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Delta deal was found by Cheapflights users on 9/15. 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.
Sat 9/277:00 amPHL - ICN
1 stop19h 20mDelta
Mon 11/247:30 pmICN - PHL
1 stop18h 20mDelta
Deal found 9/15$826
This Delta deal was found by Cheapflights users on 9/15. 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.
Sun 10/196:00 amPHL - ICN
2 stops22h 20mDelta
Tue 10/286:00 pmICN - PHL
1 stop19h 52mDelta
Deal found 9/15$831
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/185:50 pmPHL - ICN
1 stop32h 55mMultiple Airlines
Fri 10/248:35 pmICN - PHL
2 stops23h 27mMultiple Airlines
Deal found 9/15$832
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/205:50 pmPHL - ICN
1 stop32h 55mMultiple Airlines
Mon 10/278:35 pmICN - PHL
2 stops23h 27mMultiple Airlines
Deal found 9/15$835
This Air Canada deal was found by Cheapflights users on 9/15. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/224:50 pmPHL - ICN
2 stops34h 25mAir Canada
Mon 11/246:55 pmICN - PHL
2 stops33h 52mAir Canada
Deal found 9/15$838
This Air Canada deal was found by Cheapflights users on 9/15. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/273:25 pmPHL - ICN
2 stops35h 40mAir Canada
Fri 10/246:00 pmICN - PHL
1 stop33h 38mAir Canada
Deal found 9/15$842
This Air Canada deal was found by Cheapflights users on 9/14. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/163:25 pmPHL - ICN
2 stops37h 05mAir Canada
Tue 9/305:45 pmICN - PHL
2 stops35h 04mAir Canada
Deal found 9/14$845
This Air Canada deal was found by Cheapflights users on 9/15. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/274:50 pmPHL - ICN
1 stop35h 40mAir Canada
Mon 11/176:55 pmICN - PHL
2 stops33h 52mAir Canada
Deal found 9/15$848
This Air Canada deal was found by Cheapflights users on 9/15. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2110:35 amPHL - ICN
1 stop17h 55mAir Canada
Sun 11/168:10 pmICN - PHL
2 stops32h 37mAir Canada
Deal found 9/15$855
This SmartFares deal was found by Cheapflights users on 9/15. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/87:12 pmPHL - ICN
1 stop33h 23mAlaska Airlines
Sun 11/238:35 pmICN - PHL
1 stop23h 12mAlaska Airlines
Deal found 9/15$885
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/16:29 pmPHL - ICN
1 stop20h 51mUnited Airlines
Mon 10/2011:30 amICN - PHL
3 stops26h 15mUnited Airlines
Deal found 9/15$896
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/16:29 pmPHL - ICN
1 stop20h 51mUnited Airlines
Wed 10/2211:30 amICN - PHL
2 stops24h 29mUnited Airlines
Deal found 9/15$901

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to South Korea 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 September 15, 2025.
Use the filters below to find and compare flights from Philadelphia to South Korea that are best for you.

Fly from

Philadelphia

Fly to

South Korea

Route

Depart

Return

Price

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sat 9/27

7:00 am-3:20 pm

1 stop19h 20m

Incheon Intl

Mon 11/24

7:30 pm-11:50 pm

1 stop18h 20m

$826

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Fri 10/24

5:30 am-2:10 pm

1 stop19h 40m

Incheon Intl

Mon 11/3

6:00 pm-12:52 am

1 stop20h 52m

$826

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Mon 9/29

6:00 am-5:20 pm

1 stop22h 20m

Incheon Intl

Sat 10/25

6:50 pm-12:52 am

1 stop19h 02m

$826

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sun 9/28

6:25 pm-4:00 am

1 stop20h 35m

Incheon Intl

Wed 10/22

6:50 pm-12:52 am

1 stop19h 02m

$826

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sun 10/26

6:00 am-4:30 pm

2 stops21h 30m

Incheon Intl

Sat 11/15

8:05 pm-8:42 am

2 stops26h 37m

$831

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sun 10/26

6:00 am-4:30 pm

2 stops21h 30m

Incheon Intl

Sun 11/9

8:05 pm-5:55 am

2 stops23h 50m

$831

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Thu 10/30

6:00 am-4:30 pm

2 stops21h 30m

Incheon Intl

Thu 11/6

8:05 pm-5:50 am

2 stops23h 45m

$831

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Wed 10/1

6:00 am-5:20 pm

1 stop22h 20m

Incheon Intl

Thu 10/16

4:25 pm-9:00 pm

1 stop17h 35m

$896

PhiladelphiaSeoul

PHL - GMP

PHLGMP

Philadelphia

Fri 12/5

6:00 am-10:05 pm

2 stops26h 05m

Seoul Gimpo Intl

Mon 12/15

7:40 pm-1:15 pm

2 stops31h 35m

$987

PhiladelphiaSeoul

PHL - GMP

PHLGMP

Philadelphia

Wed 10/1

8:35 am-9:50 pm

2 stops24h 15m

Seoul Gimpo Intl

Thu 10/16

7:55 am-5:17 pm

2 stops22h 22m

$1,004

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 46 results
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Best time to book a flight from Philadelphia to South Korea

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

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

Currently, February is the cheapest month in which you can book a flight from Philadelphia to South Korea (average of $990). Flying from Philadelphia to South Korea in December is currently the most expensive (average of $1,633). 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 PHL to KR?

Find hourly flight availability from Philadelphia to South Korea. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Philadelphia to South Korea as you normally would.

Reviews of airlines servicing South Korea

Get insights into the airlines that provide service to South Korea. 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 South Korea. Reviews last updated September 15, 2025.
Peruse reviews from past customers who have flown with Korean Air, Delta, and United Airlines from Philadelphia to South Korea to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,139 reviews

Crew

8.7

Overall

8.4

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,139 reviews
Korean Air
8.4
Very good
1,139 reviews

Crew

8.7

Overall

8.4

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Delta
8.0
Very good
7,954 reviews
Korean Air
8.4
Very good
1,139 reviews

Crew

8.7

Overall

8.4

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
United Airlines
7.4
Good
8,929 reviews
Korean Air
8.4
Very good
1,139 reviews

Crew

8.7

Overall

8.4

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
American Airlines
7.2
Good
10,000 reviews
Korean Air
8.4
Very good
1,139 reviews

Crew

8.7

Overall

8.4

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Air Canada
7.1
Good
10,000 reviews
Korean Air
8.4
Very good
1,139 reviews

Crew

8.7

Overall

8.4

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to South Korea. 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 from for flights from Philadelphia to South Korea?

    Philadelphia (PHL), located 7.0 mi from the city center, is the airport you fly out of when you book flights from Philadelphia to South Korea.

  • How long is the flight from Philadelphia to South Korea?

    A quick flight from Philadelphia to South Korea can take about 19h 40m. Delta provides one of the quickest options available for as low as $826. There are 6915 mi between Philadelphia and South Korea. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $453. However, be on the lookout for offers from Japan Airlines and Korean Air, as they are both options that can get you from Philadelphia to South Korea for a low price.

  • What are the most popular routes from Philadelphia to South Korea?

    The most popular flight routes from Philadelphia to South Korea are Philadelphia - Incheon Intl, Philadelphia - Seoul Gimpo Intl and Philadelphia - Busan Gimhae.

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

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

  • How can I find direct flights from Philadelphia to South Korea?

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

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

    Yes. Cheapflights offers flight deals from Philadelphia to South Korea 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 Philadelphia to South Korea?

    Currently, February is the cheapest month in which you can book a flight from Philadelphia to South Korea (average of $990). Flying from Philadelphia to South Korea in December is currently the most expensive (average of $1,633). 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

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Alternative routes for Philadelphia to South Korea

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Philadelphia to South Korea

Discover the top 5 airlines that operate flights from Philadelphia to South Korea. 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$601Average$1,087FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$795Average$1,092FlexibilityNo cancel feeOn-time67%
DeltaCheapest$866Average$1,189FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$871Average$1,315FlexibilityNo cancel feeOn-time71%
Korean AirCheapest$1,060Average$1,606FlexibilityNo cancel feeOn-time81%

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