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$433+ 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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SEL
Jan 9 — Jan 161
Fri 1/9
Fri 1/16
1 adult, Economy
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Find cheap flights from Philadelphia to Seoul with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheapflights Tip: The best prices from Philadelphia to Seoul are usually found in February or March, booked 39 days in advance, depart on a Friday or Wednesday and return on a Wednesday

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 December 10, 2025.

This United Airlines deal was found by Cheapflights users on 12/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/116:15 amPHL - ICN
1 stop20h 00mUnited Airlines
Sat 12/1312:45 pmICN - PHL
1 stop20h 56mUnited Airlines
Deal found 12/7$907
This United Airlines deal was found by Cheapflights users on 12/8. 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 12/1012:45 pmPHL - ICN
2 stops26h 55mUnited Airlines
Wed 12/1712:45 pmICN - PHL
2 stops22h 25mUnited Airlines
Deal found 12/8$1,105
This United Airlines deal was found by Cheapflights users on 12/8. 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 12/138:00 amPHL - ICN
2 stops31h 40mUnited Airlines
Thu 12/186:00 pmICN - PHL
2 stops25h 32mUnited Airlines
Deal found 12/8$1,367
This Mytrip deal was found by Cheapflights users on 12/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/113:30 pmPHL - ICN
2 stops35h 40mMultiple Airlines
Sat 12/139:20 pmICN - PHL
2 stops32h 29mMultiple Airlines
Deal found 12/7$1,394
This United Airlines deal was found by Cheapflights users on 12/8. 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 12/178:15 amPHL - ICN
2 stops31h 25mUnited Airlines
Sun 1/1812:45 pmICN - PHL
2 stops24h 45mUnited Airlines
Deal found 12/8$1,407
This Expedia deal was found by Cheapflights users on 12/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/156:00 amPHL - GMP
2 stops26h 05mJapan Airlines
Mon 12/227:40 pmGMP - PHL
2 stops40h 08mJapan Airlines
Deal found 12/8$1,441
This United Airlines deal was found by Cheapflights users on 12/8. 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 12/178:15 amPHL - ICN
2 stops31h 25mUnited Airlines
Mon 1/196:00 pmICN - PHL
3 stops34h 31mUnited Airlines
Deal found 12/8$1,525
This Ovago deal was found by Cheapflights users on 12/7. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/116:30 amPHL - GMP
2 stops25h 35mJapan Airlines
Sat 12/137:40 pmGMP - PHL
2 stops32h 57mJapan Airlines
Deal found 12/7$1,896
This Ovago deal was found by Cheapflights users on 12/8. 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.
Fri 12/126:00 amPHL - GMP
2 stops26h 05mJapan Airlines
Sun 12/147:40 pmGMP - PHL
2 stops31h 35mJapan Airlines
Deal found 12/8$2,041
This Booking.com deal was found by Cheapflights users on 12/8. 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.
Wed 12/106:15 amPHL - GMP
2 stops26h 15mANA
Wed 12/177:50 pmGMP - PHL
2 stops35h 38mANA
Deal found 12/8$2,085
This American Airlines deal was found by Cheapflights users on 12/8. 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.
Sat 12/137:02 pmPHL - GMP
2 stops25h 53mMultiple Airlines
Thu 12/1812:05 pmGMP - PHL
2 stops21h 55mMultiple Airlines
Deal found 12/8$2,240
This CheapOair deal was found by Cheapflights users on 12/10. 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.
Mon 12/156:00 amPHL - GMP
2 stops38h 55mJapan Airlines
Tue 1/68:00 amGMP - PHL
2 stops44h 33mJapan Airlines
Deal found 12/10$2,410

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 December 10, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$477
(Expedia)

One-way from

$433
(United Airlines)

Popular in

December

Cheapest in

February

Average price

$1,838
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. 15% potential increase in price ($203 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($65 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 10, 2025.
Use the filters below to find and compare flights from Philadelphia to Seoul that are best for you.

Fly from

Philadelphia

Fly to

Seoul

Route

Depart

Return

Price

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Thu 1/8

6:15 am-3:30 pm

1 stop19h 15m

Incheon Intl

Mon 2/2

9:35 am-11:43 am

1 stop16h 08m

$846

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Wed 1/7

8:35 am-5:40 am

1 stop31h 05m

Incheon Intl

Thu 2/5

12:45 pm-9:52 pm

1 stop23h 07m

$846

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Thu 1/8

6:15 am-3:30 pm

1 stop19h 15m

Incheon Intl

Sat 2/7

7:25 pm-12:21 am

1 stop18h 56m

$846

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Tue 2/24

8:35 am-5:40 am

1 stop31h 05m

Incheon Intl

Tue 3/17

11:45 am-9:31 pm

1 stop22h 46m

$846

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Wed 1/21

5:40 am-3:50 pm

1 stop20h 10m

Incheon Intl

Wed 2/25

6:00 pm-12:26 am

1 stop20h 26m

$846

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Wed 1/7

8:35 am-5:40 am

1 stop31h 05m

Incheon Intl

Tue 2/10

6:00 pm-9:52 pm

1 stop17h 52m

$846

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sat 2/28

6:00 am-4:50 pm

1 stop20h 50m

Incheon Intl

Sat 3/14

6:00 pm-12:49 am

1 stop19h 49m

$846

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Wed 2/25

8:35 am-5:40 am

1 stop31h 05m

Incheon Intl

Thu 3/12

5:00 pm-7:15 am

1 stop27h 15m

$846

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Mon 2/23

7:59 pm-3:50 pm

1 stop29h 51m

Incheon Intl

Thu 3/12

7:30 pm-11:59 pm

1 stop17h 29m

$846

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Mon 1/19

8:35 am-5:40 am

1 stop31h 05m

Incheon Intl

Sun 2/15

6:00 pm-9:33 pm

1 stop17h 33m

$846

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 38 results
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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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
OvagoPrice Accuracy2 starsTrust Score*2 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Philadelphia-Seoul flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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

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

Use this chart to determine the optimal time to book a round-trip flight from Philadelphia to Seoul. Price data was last updated on December 5, 2025.

To ensure you get the cheapest price possible for a flight from Philadelphia to Seoul, you should look to book at least 36 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.

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

Currently, October is the cheapest month in which you can book a flight from Philadelphia to Seoul (average of $258). Flying from Philadelphia to Seoul in June is currently the most expensive (average of $566). 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 SEL?

Find hourly flight availability from Philadelphia to Seoul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 10, 2025.

It’s optimal to fly from Philadelphia to Seoul in the afternoon. By choosing this option you can save up to 41% on the cost of your flight, compared to a flight at noon.

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 December 10, 2025.
See what other customers who have flown with Korean Air, Delta, and United 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
1,184 reviews

Comfort

8.3

Crew

8.7

Overall

8.4

Entertainment

8.2

Food

8.1

Boarding

8.5

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
1,184 reviews
Korean Air
8.4
Very good
1,184 reviews

Comfort

8.3

Crew

8.7

Overall

8.4

Entertainment

8.2

Food

8.1

Boarding

8.5

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
8,009 reviews
Korean Air
8.4
Very good
1,184 reviews

Comfort

8.3

Crew

8.7

Overall

8.4

Entertainment

8.2

Food

8.1

Boarding

8.5

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
9,095 reviews
Korean Air
8.4
Very good
1,184 reviews

Comfort

8.3

Crew

8.7

Overall

8.4

Entertainment

8.2

Food

8.1

Boarding

8.5

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
11,048 reviews
Korean Air
8.4
Very good
1,184 reviews

Comfort

8.3

Crew

8.7

Overall

8.4

Entertainment

8.2

Food

8.1

Boarding

8.5

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
10,514 reviews
Korean Air
8.4
Very good
1,184 reviews

Comfort

8.3

Crew

8.7

Overall

8.4

Entertainment

8.2

Food

8.1

Boarding

8.5

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 5 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 19h 15m. Delta provides one of the quickest options available for as low as $846. 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 $504, United Airlines will fly you from Philadelphia to Seoul and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air Canada and Delta - these airlines can fly you to your destination from $790 and $845, respectively. Users have found that United Airlines is 55% 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, October is the cheapest month in which you can book a flight from Philadelphia to Seoul (average of $258). Flying from Philadelphia to Seoul in June is currently the most expensive (average of $566). 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 Seoul

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 Seoul

Discover the top 5 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 December 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$533Average$1,240FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$795Average$1,104FlexibilityNo cancel feeOn-time67%
DeltaCheapest$847Average$1,167FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$871Average$1,291FlexibilityNo cancel feeOn-time71%
Korean AirCheapest$1,060Average$1,287FlexibilityNo cancel feeOn-time81%

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