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$459+ Cheap flights from Philadelphia (PHL) to Seoul (SEL)

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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SEL
Jul 27 — Aug 31
Mon 7/27
Mon 8/3
1 adult, Economy
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Cheap flight deals from Philadelphia to Seoul

Cheapest flights from Philadelphia to Seoul
Explore the most affordable flight options available from Philadelphia to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 27, 2026.

This United Airlines deal was found by Cheapflights users on 6/26. 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.
Mon 8/33:10 pm
PHL
-
ICN
2 stops24h 10m
United Airlines
Mon 8/3111:30 am
ICN
-
PHL
1 stop19h 00m
United Airlines
Deal found 6/26$966
This United Airlines deal was found by Cheapflights users on 6/25. 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.
Mon 11/96:00 am
PHL
-
ICN
1 stop20h 15m
United Airlines
Wed 11/1812:45 pm
ICN
-
PHL
2 stops20h 41m
United Airlines
Deal found 6/25$969
This United Airlines deal was found by Cheapflights users on 6/26. 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 8/135:01 pm
PHL
-
ICN
2 stops22h 19m
United Airlines
Mon 8/3111:30 am
ICN
-
PHL
2 stops23h 13m
United Airlines
Deal found 6/26$970
This Booking.com deal was found by Cheapflights users on 6/26. 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.
Mon 8/317:02 am
PHL
-
ICN
1 stop21h 28m
Alaska Airlines
Fri 9/117:35 pm
ICN
-
PHL
1 stop23h 05m
Alaska Airlines
Deal found 6/26$972
This Delta deal was found by Cheapflights users on 6/26. 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.
Tue 9/17:20 am
PHL
-
ICN
1 stop19h 00m
Delta
Thu 10/14:25 pm
ICN
-
PHL
1 stop21h 16m
Delta
Deal found 6/26$976
This United Airlines deal was found by Cheapflights users on 6/26. 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 10/49:27 am
PHL
-
ICN
1 stop40h 33m
United Airlines
Sun 10/184:50 pm
ICN
-
PHL
2 stops30h 21m
United Airlines
Deal found 6/26$977
This United Airlines deal was found by Cheapflights users on 6/25. 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 12/16:10 am
PHL
-
ICN
1 stop20h 05m
United Airlines
Fri 12/1112:45 pm
ICN
-
PHL
1 stop22h 35m
United Airlines
Deal found 6/25$981
This United Airlines deal was found by Cheapflights users on 6/25. 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 11/286:51 pm
PHL
-
ICN
2 stops31h 34m
United Airlines
Fri 12/1112:45 pm
ICN
-
PHL
1 stop18h 13m
United Airlines
Deal found 6/25$985
This Alaska Airlines deal was found by Cheapflights users on 6/27. 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.
Tue 9/16:59 pm
PHL
-
ICN
1 stop33h 31m
Alaska Airlines
Sat 10/318:00 pm
ICN
-
PHL
1 stop22h 40m
Alaska Airlines
Deal found 6/27$988
This United Airlines deal was found by Cheapflights users on 6/25. 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 8/65:00 pm
PHL
-
ICN
2 stops22h 20m
United Airlines
Thu 8/2011:30 am
ICN
-
PHL
1 stop19h 00m
United Airlines
Deal found 6/25$992
This Alaska Airlines deal was found by Cheapflights users on 6/27. 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.
Tue 9/16:59 pm
PHL
-
ICN
1 stop33h 31m
Alaska Airlines
Thu 10/17:35 pm
ICN
-
PHL
1 stop35h 21m
Alaska Airlines
Deal found 6/27$995
This FlightHub deal was found by Cheapflights users on 6/25. 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.
Fri 8/287:00 am
PHL
-
GMP
2 stops25h 15m
Japan Airlines
Fri 9/47:15 pm
GMP
-
PHL
2 stops58h 15m
Japan Airlines
Deal found 6/25$1,257

Find flight deals from Philadelphia to Seoul

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Seoul (SEL). 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 June 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$966
(United Airlines)

One-way from

$459
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,719
Provider with most accurate pricing for Philadelphia-Seoul (SEL) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Seoul (SEL) flights.
Search Deals
From Philadelphia to Seoul (SEL)
Search Deals
One-way flight from Philadelphia to Seoul (SEL)
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($158 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($64 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to Seoul 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 June 27, 2026.
Use the filters below to find and compare flights from Philadelphia to Seoul that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Wed 8/5

6:00 am-3:00 pm

1 stop20h 00m

Incheon Intl

Tue 8/25

11:30 am-12:59 am

2 stops26h 29m

$985

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Wed 9/2

6:00 am-3:00 pm

1 stop20h 00m

Incheon Intl

Sat 9/26

11:30 am-9:15 pm

1 stop22h 45m

$1,006

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Wed 9/2

6:00 am-3:00 pm

1 stop20h 00m

Incheon Intl

Wed 9/23

4:50 pm-7:49 am

1 stop27h 59m

$1,006
Quickest round-trip

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Fri 9/4

6:15 am-2:10 pm

1 stop18h 55m

Incheon Intl

Tue 9/15

6:50 pm-12:56 am

1 stop19h 06m

$1,011

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Tue 9/1

6:05 am-4:25 pm

1 stop21h 20m

Incheon Intl

Tue 9/22

7:40 pm-11:56 pm

1 stop17h 16m

$1,011

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Mon 8/31

7:02 am-5:30 pm

1 stop21h 28m

Incheon Intl

Fri 9/11

7:35 pm-5:40 am

1 stop23h 05m

$1,091

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Tue 8/11

5:01 pm-4:20 am

2 stops22h 19m

Incheon Intl

Thu 8/20

11:30 am-5:30 pm

1 stop19h 00m

$1,091

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Wed 9/2

5:01 pm-4:20 am

2 stops22h 19m

Incheon Intl

Mon 11/2

6:00 pm-10:18 am

2 stops30h 18m

$1,095

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Tue 9/1

6:59 pm-5:30 pm

1 stop33h 31m

Incheon Intl

Thu 10/1

7:35 pm-5:40 am

1 stop23h 05m

$1,099

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sat 8/22

5:16 pm-4:00 am

1 stop21h 44m

Incheon Intl

Mon 8/31

7:20 pm-6:05 am

1 stop23h 45m

$1,116

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/22

Showing 1-10 of 39 resultsSorted by cheapest first
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Compare providers for flights from Philadelphia to Seoul

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 Philadelphia to Seoul in June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
OvagoPrice 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 Philadelphia-Seoul flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Seoul flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-Seoul flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-Seoul 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 Philadelphia-Seoul 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 Philadelphia to Seoul

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

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

Currently, August is the cheapest month in which you can book a flight from Philadelphia to Seoul (average of $493). Flying from Philadelphia to Seoul in July is currently the most expensive (average of $880). 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.

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

What’s the top layover airport for flights from Philadelphia to Seoul?

Share of 1-stop round-trip flights from Philadelphia to Seoul chosen by Cheapflights users in the past 12 months, using the same layover each way.

Dallas (DFW) – chosen by Cheapflights users on 33% of 1-stop itineraries from Philadelphia to Seoul on Cheapflights.

What’s the cheapest layover airport for flights from Philadelphia to Seoul?

Average round-trip fare for 1-stop flights from Philadelphia to Seoul, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Dallas (DFW) is the most affordable 1-stop option, with an average round-trip price of $865.

What’s the fastest layover option from Philadelphia to Seoul?

Shortest average travel time for 1-stop one-way flights from Philadelphia to Seoul, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Toronto (YYZ) have the shortest average one-way travel time for 1-stop routes: 19h 05m.

Which airport typically offers the quickest layover for flights from Philadelphia to Seoul?

Average layover duration for 1-stop one-way flights from Philadelphia to Seoul, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via San Francisco (SFO) offer the fastest connection on this route, with an average layover time of 1h 30m.

How far ahead should I book a flight from Philadelphia to Seoul?

To ensure you get the cheapest price possible for a flight from Philadelphia to Seoul, you should look to book at least 55 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Reviews of airlines servicing Seoul

Get insights into the airlines that provide service to Seoul. 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 Seoul. Reviews last updated June 27, 2026.
See what other customers who have flown with Korean Air,Delta, andUnited Airlines from Philadelphia to Seoul have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,218 reviews

Comfort

8.3

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

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
1,218 reviews
Korean Air
8.4
Very good
1,218 reviews

Comfort

8.3

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

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
7.8
Good
8,451 reviews
Korean Air
8.4
Very good
1,218 reviews

Comfort

8.3

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

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
9,896 reviews
Korean Air
8.4
Very good
1,218 reviews

Comfort

8.3

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

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
7.1
Good
11,779 reviews
Korean Air
8.4
Very good
1,218 reviews

Comfort

8.3

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

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
11,269 reviews
Korean Air
8.4
Very good
1,218 reviews

Comfort

8.3

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

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 Seoul. 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 Seoul?

    Most people fly from Philadelphia (PHL) if they book a flight from Philadelphia to Seoul. On average, Philadelphia has 0 outbound flights to Seoul per day from 6 airlines. Philadelphia is conveniently located just 7.0 mi from Philadelphia’s city center.

  • How long is the flight from Philadelphia to Seoul?

    A quick flight from Philadelphia to Seoul can take about 20h. United Airlines provides one of the quickest options available for as low as $985. Philadelphia and Seoul are separated by a distance of 6915 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Currently priced at $780, Air Canada will fly you from Philadelphia to Seoul and back. In addition to Air Canada, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and Delta - these airlines can fly you to your destination from $845 and $845, respectively. Users have found that Air Canada is 35% cheaper than the other options available to this destination.

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

    One-way options have recently been found by users for as low as $339 on Delta. Other airlines that offer cheap prices include United Airlines from $418 and Air Canada from $512 one-way.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Philadelphia to Seoul (average of $493). Flying from Philadelphia to Seoul in July is currently the most expensive (average of $880). 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

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 6 airlines flying from Philadelphia to Seoul

Discover the top 6 airlines that operate flights from Philadelphia to Seoul. 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 June 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$780Average$1,102FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$845Average$966FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$850Average$1,216FlexibilityNo cancel feeOn-time69%
DeltaCheapest$865Average$963FlexibilityNo cancel feeOn-timeN/A
Asiana AirlinesCheapest$915Average$1,118FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$1,129Average$1,204FlexibilityNo cancel feeOn-time81%

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