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$408+ 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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SEL
Jun 23 — Jun 301
Mon 6/23
Mon 6/30
1 adult, Economy
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Cheapflights Tip: The best prices from Philadelphia to Seoul are usually found in November or March, booked 68 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 June 18, 2025.

Round-trip from

$819
(Gurufare)

One-way from

$408
(Kiwi.com)

Popular in

December

Cheapest in

November

Average price

$1,108
From Philadelphia to Seoul (SEL)
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One-way flight from Philadelphia to Seoul (SEL)
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Highest demand for flights based on searches. 6% potential increase in price ($80 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($47 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 18, 2025.

This Gurufare deal was found by Cheapflights users on 6/17. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/89:15 pmPHL - GMP
2 stops24h 30mJapan Airlines
Wed 9/247:55 amGMP - PHL
2 stops27h 18mJapan Airlines
Deal found 6/17$819
This Delta deal was found by Cheapflights users on 6/17. 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 10/17:00 amPHL - ICN
1 stop19h 20mDelta
Wed 10/297:30 pmICN - PHL
1 stop17h 13mDelta
Deal found 6/17$847
This United Airlines deal was found by Cheapflights users on 6/16. 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 9/286:29 pmPHL - ICN
1 stop20h 51mUnited Airlines
Fri 10/1011:30 amICN - PHL
1 stop18h 57mUnited Airlines
Deal found 6/16$857
This American Airlines deal was found by Cheapflights users on 6/18. 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.
Tue 10/145:00 amPHL - ICN
1 stop21h 30mAmerican Airlines
Tue 10/286:50 pmICN - PHL
1 stop17h 19mAmerican Airlines
Deal found 6/18$867
This Air Canada deal was found by Cheapflights users on 6/15. 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 9/14:50 pmPHL - ICN
2 stops34h 15mAir Canada
Thu 9/115:45 pmICN - PHL
2 stops29h 09mAir Canada
Deal found 6/15$879
This Orbitz deal was found by Cheapflights users on 6/16. 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.
Sat 8/163:20 pmPHL - ICN
2 stops59h 45mMultiple Airlines
Sun 8/244:05 pmICN - PHL
2 stops43h 02mMultiple Airlines
Deal found 6/16$907
This Japan Airlines deal was found by Cheapflights users on 6/18. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/178:08 amPHL - GMP
2 stops24h 42mMultiple Airlines
Wed 9/247:55 amGMP - PHL
2 stops21h 32mMultiple Airlines
Deal found 6/18$908
This Cheapflightsfares deal was found by Cheapflights users on 6/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/3012:50 pmPHL - GMP
2 stops33h 15mANA
Tue 10/77:55 pmGMP - PHL
2 stops31h 21mANA
Deal found 6/18$1,549

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 18, 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

PhiladelphiaSeoul

PHL - GMP

PHLGMP

Philadelphia

Mon 9/8

9:15 pm-10:45 am

2 stops24h 30m

Seoul Gimpo Intl

Wed 9/24

7:55 am-10:13 pm

2 stops27h 18m

$819

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Wed 10/1

7:00 am-3:20 pm

1 stop19h 20m

Incheon Intl

Wed 10/29

7:30 pm-11:43 pm

1 stop17h 13m

$847

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sun 9/28

6:29 pm-4:20 am

1 stop20h 51m

Incheon Intl

Fri 10/10

11:30 am-5:27 pm

1 stop18h 57m

$857

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Tue 10/14

5:00 am-3:30 pm

1 stop21h 30m

Incheon Intl

Tue 10/28

6:50 pm-11:09 pm

1 stop17h 19m

$867

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Mon 9/1

4:50 pm-4:05 pm

2 stops34h 15m

Incheon Intl

Thu 9/11

5:45 pm-9:54 am

2 stops29h 09m

$879

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sat 8/16

3:20 pm-4:05 pm

2 stops59h 45m

Incheon Intl

Sun 8/24

4:05 pm-10:07 pm

2 stops43h 02m

$907

PhiladelphiaSeoul

PHL - GMP

PHLGMP

Philadelphia

Wed 9/17

8:08 am-9:50 pm

2 stops24h 42m

Seoul Gimpo Intl

Wed 9/24

7:55 am-4:27 pm

2 stops21h 32m

$908

PhiladelphiaSeoul

PHL - GMP

PHLGMP

Philadelphia

Tue 9/30

12:50 pm-11:05 am

2 stops33h 15m

Seoul Gimpo Intl

Tue 10/7

7:55 pm-2:16 pm

2 stops31h 21m

$1,549

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sat 8/30

7:07 pm-9:35 pm

2 stops37h 28m

$408

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sat 8/30

5:00 am-3:30 pm

1 stop21h 30m

$438

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

Showing 1-10 of 19 results
1
2

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 June 13, 2025.

To ensure you get the cheapest price possible for a flight from Philadelphia to Seoul, you should look to book at least 68 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, February is the cheapest month in which you can book a flight from Philadelphia to Seoul (average of $1,000). Flying from Philadelphia to Seoul in December is currently the most expensive (average of $1,635). 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 June 18, 2025.

It’s optimal to fly from Philadelphia to Seoul in the morning. By choosing this option you can save up to 16% on the cost of your flight, compared to a flight in the afternoon.

Rainfall in Seoul by month

Plan your trip to Seoul by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seoul ranges from 1.1 - 10.0 inches per month. July is typically the wettest month, when rainfall can reach 10.0 in. December is typically the driest time to visit Seoul when rainfall is around 1.1 in.

Temperature in Seoul by month

Plan your trip to Seoul by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seoul, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 18, 2025.
Read through reviews of airlines operating flights from Philadelphia to Seoul, such as Korean Air, Japan Airlines and ANA. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,090 reviews

Entertainment

8.2

Comfort

8.3

Food

8.1

Boarding

8.5

Crew

8.7

Overall

8.4

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
1,090 reviews
Korean Air
8.4
Very good
1,090 reviews

Entertainment

8.2

Comfort

8.3

Food

8.1

Boarding

8.5

Crew

8.7

Overall

8.4

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.
Japan Airlines
8.3
Very good
1,494 reviews
Korean Air
8.4
Very good
1,090 reviews

Entertainment

8.2

Comfort

8.3

Food

8.1

Boarding

8.5

Crew

8.7

Overall

8.4

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.
ANA
8.3
Very good
886 reviews
Korean Air
8.4
Very good
1,090 reviews

Entertainment

8.2

Comfort

8.3

Food

8.1

Boarding

8.5

Crew

8.7

Overall

8.4

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.
Alaska Airlines
8.0
Very good
10,000 reviews
Korean Air
8.4
Very good
1,090 reviews

Entertainment

8.2

Comfort

8.3

Food

8.1

Boarding

8.5

Crew

8.7

Overall

8.4

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
7,964 reviews
Korean Air
8.4
Very good
1,090 reviews

Entertainment

8.2

Comfort

8.3

Food

8.1

Boarding

8.5

Crew

8.7

Overall

8.4

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.

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

    Currently priced at $819, Japan Airlines will fly you from Philadelphia to Seoul and back. In addition to Japan Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and American Airlines - these airlines can fly you to your destination from $847 and $867, respectively. Users have found that Japan Airlines is 28% 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 $438 on American Airlines. Other airlines that offer cheap prices include Japan Airlines from $482 and Air Canada from $493 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, February is the cheapest month in which you can book a flight from Philadelphia to Seoul (average of $1,000). Flying from Philadelphia to Seoul in December is currently the most expensive (average of $1,635). 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 June 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$601Average$1,178FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$795Average$1,093FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$871Average$1,386FlexibilityNo cancel feeOn-time71%
DeltaCheapest$872Average$1,192FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$1,076Average$1,504FlexibilityNo cancel feeOn-time81%

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