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$491+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SEL
Jul 8 — Jul 151
Wed 7/8
Wed 7/15
1 adult, Economy
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Find cheap flights from Philadelphia to Seoul with Cheapflights

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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 8, 2026.

This Booking.com deal was found by Cheapflights users on 6/5. 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.
Tue 9/226:08 pm
PHL
-
ICN
1 stop34h 22m
Alaska Airlines
Mon 11/168:00 pm
ICN
-
PHL
1 stop23h 33m
Alaska Airlines
Deal found 6/5$1,128
This Booking.com deal was found by Cheapflights users on 6/6. 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
Wed 9/307:35 pm
ICN
-
PHL
1 stop23h 05m
Alaska Airlines
Deal found 6/6$1,129
This Booking.com deal was found by Cheapflights users on 6/7. 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.
Tue 8/184:26 pm
PHL
-
ICN
1 stop36h 04m
Alaska Airlines
Wed 9/307:35 pm
ICN
-
PHL
1 stop23h 05m
Alaska Airlines
Deal found 6/7$1,131
This Delta deal was found by Cheapflights users on 6/5. 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
Wed 9/236:50 pm
ICN
-
PHL
1 stop19h 06m
Delta
Deal found 6/5$1,136
This Delta deal was found by Cheapflights users on 6/5. 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 9/15:16 pm
PHL
-
ICN
1 stop21h 44m
Delta
Thu 10/17:00 pm
ICN
-
PHL
2 stops24h 05m
Delta
Deal found 6/5$1,141
This Delta deal was found by Cheapflights users on 6/5. 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 11/157:59 pm
PHL
-
ICN
1 stop30h 51m
Delta
Thu 12/39:35 am
ICN
-
PHL
1 stop20h 44m
Delta
Deal found 6/5$1,142
This Delta deal was found by Cheapflights users on 6/5. 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.
Wed 9/25:20 pm
PHL
-
ICN
2 stops21h 40m
Delta
Wed 9/167:00 pm
ICN
-
PHL
1 stop23h 50m
Delta
Deal found 6/5$1,145
This United Airlines deal was found by Cheapflights users on 6/3. 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 7/215:00 pm
PHL
-
ICN
2 stops22h 20m
United Airlines
Mon 8/3111:30 am
ICN
-
PHL
1 stop19h 00m
United Airlines
Deal found 6/3$1,146
This United Airlines deal was found by Cheapflights users on 6/5. 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 8/311:35 pm
PHL
-
ICN
2 stops25h 45m
United Airlines
Mon 9/2111:30 am
ICN
-
PHL
2 stops20h 59m
United Airlines
Deal found 6/5$1,150
This United Airlines deal was found by Cheapflights users on 6/3. 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 8/56:00 am
PHL
-
ICN
1 stop20h 00m
United Airlines
Tue 8/254:50 pm
ICN
-
PHL
2 stops30h 17m
United Airlines
Deal found 6/3$1,151
This United Airlines deal was found by Cheapflights users on 6/5. 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 8/29:25 am
PHL
-
ICN
1 stop40h 35m
United Airlines
Mon 8/174:50 pm
ICN
-
PHL
2 stops32h 08m
United Airlines
Deal found 6/5$1,160
This CheapOair deal was found by Cheapflights users on 6/4. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/13:30 pm
PHL
-
GMP
3 stops32h 40m
Multiple Airlines
Sun 11/158:35 am
GMP
-
PHL
2 stops28h 01m
Multiple Airlines
Deal found 6/4$1,294

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 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,016
(United Airlines)

One-way from

$491
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,666
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. 10% potential increase in price ($146 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($60 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 8, 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
Quickest round-trip

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Wed 8/5

9:40 am-4:25 pm

1 stop17h 45m

Incheon Intl

Tue 8/25

7:00 pm-5:50 am

1 stop23h 50m

$1,136

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Thu 11/19

7:05 am-5:55 pm

1 stop20h 50m

Incheon Intl

Tue 12/1

6:35 pm-5:41 am

1 stop25h 06m

$1,136

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Wed 9/9

6:00 am-5:20 pm

2 stops22h 20m

Incheon Intl

Wed 9/23

7:40 pm-8:42 am

2 stops26h 02m

$1,140

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Thu 8/20

5:20 pm-4:00 am

2 stops21h 40m

Incheon Intl

Thu 8/27

7:00 pm-6:05 am

2 stops24h 05m

$1,140

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Wed 9/2

5:45 am-4:50 pm

2 stops22h 05m

Incheon Intl

Wed 9/16

10:15 am-7:19 pm

1 stop22h 04m

$1,145

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Mon 7/27

5:00 pm-4:20 am

2 stops22h 20m

Incheon Intl

Thu 8/13

11:30 am-12:59 am

2 stops26h 29m

$1,151

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Wed 8/5

6:00 am-3:00 pm

1 stop20h 00m

Incheon Intl

Tue 8/25

4:50 pm-10:07 am

2 stops30h 17m

$1,151

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Wed 9/2

6:00 am-3:00 pm

1 stop20h 00m

Incheon Intl

Wed 9/16

4:50 pm-12:23 pm

2 stops32h 33m

$1,151

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Mon 11/16

2:12 pm-5:45 am

1 stop25h 33m

Incheon Intl

Sat 12/5

7:25 pm-12:21 am

1 stop18h 56m

$1,186

PhiladelphiaSeoul

PHL - GMP

PHLGMP

Philadelphia

Sun 9/6

9:47 am-5:55 pm

2 stops67h 08m

Seoul Gimpo Intl

Thu 9/10

8:00 am-4:39 pm

2 stops21h 39m

$1,655

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/6

Showing 1-10 of 30 resultsSorted by cheapest first
1
2
3

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 December is currently the most expensive (average of $868). 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 56 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 8, 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

Food

8.1

Entertainment

8.2

Overall

8.4

Boarding

8.5

Comfort

8.3

Crew

8.7

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

Food

8.1

Entertainment

8.2

Overall

8.4

Boarding

8.5

Comfort

8.3

Crew

8.7

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
7.9
Good
8,396 reviews
Korean Air
8.4
Very good
1,218 reviews

Food

8.1

Entertainment

8.2

Overall

8.4

Boarding

8.5

Comfort

8.3

Crew

8.7

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
9,781 reviews
Korean Air
8.4
Very good
1,218 reviews

Food

8.1

Entertainment

8.2

Overall

8.4

Boarding

8.5

Comfort

8.3

Crew

8.7

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
11,640 reviews
Korean Air
8.4
Very good
1,218 reviews

Food

8.1

Entertainment

8.2

Overall

8.4

Boarding

8.5

Comfort

8.3

Crew

8.7

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
11,146 reviews
Korean Air
8.4
Very good
1,218 reviews

Food

8.1

Entertainment

8.2

Overall

8.4

Boarding

8.5

Comfort

8.3

Crew

8.7

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 57m. United Airlines provides one of the quickest options available for as low as $1,016. 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 $778, 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 United Airlines - these airlines can fly you to your destination from $845 and $850, 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 American Airlines from $394 and United Airlines from $418 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 December is currently the most expensive (average of $868). 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 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$778Average$1,088FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$845Average$953FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$850Average$1,289FlexibilityNo cancel feeOn-time69%
DeltaCheapest$856Average$1,017FlexibilityNo 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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