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$381+ 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 11/6. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SEL
Nov 26 — Dec 31
Wed 11/26
Wed 12/3
1 adult, Economy
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Cheapflights Tip: The best prices from Philadelphia to Seoul are usually found in March or October, booked 39 days in advance, depart on a Friday or Wednesday and return on a Wednesday

Cheap 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 October 27, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$767
(United Airlines)

One-way from

$381
(United Airlines)

Popular in

December

Cheapest in

March

Average price

$970
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. 13% potential increase in price ($173 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($70 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find 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 October 27, 2025.

This United Airlines deal was found by Cheapflights users on 10/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/296:25 pmPHL - ICN
1 stop21h 15mUnited Airlines
Thu 11/612:45 pmICN - PHL
1 stop18h 25mUnited Airlines
Deal found 10/27$767
This United Airlines deal was found by Cheapflights users on 10/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1110:34 amPHL - ICN
2 stops29h 06mUnited Airlines
Mon 12/2212:45 pmICN - PHL
2 stops26h 00mUnited Airlines
Deal found 10/27$771
This United Airlines deal was found by Cheapflights users on 10/26. 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 10/266:25 pmPHL - ICN
1 stop21h 15mUnited Airlines
Sun 11/96:00 pmICN - PHL
1 stop37h 10mUnited Airlines
Deal found 10/26$774
This United Airlines deal was found by Cheapflights users on 10/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/66:30 amPHL - ICN
2 stops33h 10mUnited Airlines
Sat 12/2712:45 pmICN - PHL
1 stop30h 26mUnited Airlines
Deal found 10/27$778
This Air Canada deal was found by Cheapflights users on 10/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/113:30 pmPHL - ICN
2 stops35h 40mAir Canada
Thu 12/186:55 pmICN - PHL
2 stops33h 55mAir Canada
Deal found 10/27$780
This United Airlines deal was found by Cheapflights users on 10/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/76:15 amPHL - ICN
1 stop33h 25mUnited Airlines
Sat 12/2712:45 pmICN - PHL
1 stop32h 19mUnited Airlines
Deal found 10/27$781
This United Airlines deal was found by Cheapflights users on 10/25. 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 11/2712:47 pmPHL - ICN
2 stops26h 53mUnited Airlines
Sun 12/216:00 pmICN - PHL
2 stops36h 41mUnited Airlines
Deal found 10/25$784
This Air Canada deal was found by Cheapflights users on 10/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/53:30 pmPHL - ICN
2 stops34h 30mAir Canada
Mon 12/158:10 pmICN - PHL
1 stop33h 39mAir Canada
Deal found 10/27$787
This Air Canada deal was found by Cheapflights users on 10/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/73:30 pmPHL - ICN
2 stops35h 40mAir Canada
Sun 12/288:10 pmICN - PHL
1 stop33h 39mAir Canada
Deal found 10/27$788
This Air Canada deal was found by Cheapflights users on 10/25. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/109:20 amPHL - ICN
1 stop19h 05mAir Canada
Tue 11/188:10 pmICN - PHL
1 stop16h 36mAir Canada
Deal found 10/25$791
This FlightHub deal was found by Cheapflights users on 10/25. 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.
Tue 11/46:25 amPHL - GMP
2 stops25h 40mJapan Airlines
Tue 11/187:40 pmGMP - PHL
2 stops31h 37mJapan Airlines
Deal found 10/25$872
This Orbitz deal was found by Cheapflights users on 10/26. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/267:35 amPHL - GMP
2 stops48h 30mJapan Airlines
Mon 12/812:05 pmGMP - PHL
2 stops39h 10mJapan Airlines
Deal found 10/26$900

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 October 27, 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

Tue 11/11

8:15 am-5:40 am

2 stops31h 25m

Incheon Intl

Tue 11/18

12:45 pm-5:12 pm

1 stop18h 27m

$767

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Thu 11/27

12:47 pm-5:40 am

2 stops26h 53m

Incheon Intl

Sat 12/6

12:45 pm-7:41 pm

1 stop20h 56m

$767

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sat 11/15

6:25 pm-5:40 am

1 stop21h 15m

Incheon Intl

Sat 12/6

12:45 pm-7:41 pm

1 stop20h 56m

$767

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Wed 11/26

6:25 pm-5:40 am

1 stop21h 15m

Incheon Intl

Mon 12/8

12:45 pm-7:41 pm

1 stop20h 56m

$767

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Mon 11/10

3:48 pm-5:40 am

2 stops23h 52m

Incheon Intl

Tue 11/18

12:45 pm-5:12 pm

1 stop18h 27m

$767

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Fri 11/14

6:25 pm-5:40 am

1 stop21h 15m

Incheon Intl

Mon 11/17

6:00 pm-5:18 am

1 stop25h 18m

$767

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sun 11/9

8:08 am-5:40 am

2 stops31h 32m

Incheon Intl

Sat 11/15

12:45 pm-5:20 pm

1 stop18h 35m

$771

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sat 12/6

6:30 am-5:40 am

2 stops33h 10m

Incheon Intl

Sat 12/27

12:45 pm-12:45 am

2 stops26h 00m

$771

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Fri 11/14

12:40 pm-5:40 am

3 stops27h 00m

Incheon Intl

Wed 11/19

12:45 pm-7:05 pm

2 stops20h 20m

$771

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sat 12/6

6:30 am-5:40 am

2 stops33h 10m

Incheon Intl

Thu 12/25

12:45 pm-12:45 am

2 stops26h 00m

$771

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 40 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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice 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

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 October 24, 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 $283). Flying from Philadelphia to Seoul in June is currently the most expensive (average of $575). 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 October 27, 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 October 27, 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
1,153 reviews

Boarding

8.5

Crew

8.7

Comfort

8.3

Food

8.1

Overall

8.4

Entertainment

8.2

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
1,153 reviews
Korean Air
8.4
Very good
1,153 reviews

Boarding

8.5

Crew

8.7

Comfort

8.3

Food

8.1

Overall

8.4

Entertainment

8.2

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
7,996 reviews
Korean Air
8.4
Very good
1,153 reviews

Boarding

8.5

Crew

8.7

Comfort

8.3

Food

8.1

Overall

8.4

Entertainment

8.2

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
8,999 reviews
Korean Air
8.4
Very good
1,153 reviews

Boarding

8.5

Crew

8.7

Comfort

8.3

Food

8.1

Overall

8.4

Entertainment

8.2

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
11,031 reviews
Korean Air
8.4
Very good
1,153 reviews

Boarding

8.5

Crew

8.7

Comfort

8.3

Food

8.1

Overall

8.4

Entertainment

8.2

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
10,367 reviews
Korean Air
8.4
Very good
1,153 reviews

Boarding

8.5

Crew

8.7

Comfort

8.3

Food

8.1

Overall

8.4

Entertainment

8.2

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 24h 28m. United Airlines provides one of the quickest options available for as low as $900. Philadelphia and Seoul are separated by a distance of 6902 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 $560, 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 $795 and $866, respectively. Users have found that United Airlines is 50% cheaper than the other options available to this destination.

  • 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 $283). Flying from Philadelphia to Seoul in June is currently the most expensive (average of $575). 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 October 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$560Average$1,187FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$795Average$1,103FlexibilityNo cancel feeOn-time67%
DeltaCheapest$866Average$1,182FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$871Average$1,328FlexibilityNo cancel feeOn-time71%
Korean AirCheapest$1,060Average$1,270FlexibilityNo cancel feeOn-time81%

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