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$422+ 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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SEL
Jun 18 — Jun 251
Wed 6/18
Wed 6/25
1 adult, Economy
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Cheapflights Tip: The best prices from Philadelphia to Seoul are usually found in March or November, booked 4 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 13, 2025.

Round-trip from

$817
(FlightHub)

One-way from

$422
(American Airlines)

Popular in

December

Cheapest in

March

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 ($46 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 13, 2025.

This FlightHub deal was found by Cheapflights users on 6/12. 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.
Mon 9/19:15 pmPHL - GMP
2 stops24h 30mJapan Airlines
Wed 9/177:55 amGMP - PHL
2 stops21h 32mJapan Airlines
Deal found 6/12$817
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/299:42 amPHL - ICN
1 stop17h 43mDelta
Sat 10/116:40 pmICN - PHL
1 stop18h 03mDelta
Deal found 6/10$857
This Air Canada deal was found by Cheapflights users on 6/12. 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 9/13:20 pmPHL - ICN
1 stop35h 55mAir Canada
Wed 9/176:00 pmICN - PHL
1 stop33h 38mAir Canada
Deal found 6/12$866
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Mon 9/19:21 pmPHL - ICN
1 stop29h 09mAmerican Airlines
Thu 9/115:25 pmICN - PHL
1 stop19h 00mAmerican Airlines
Deal found 6/11$867
This Expedia deal was found by Cheapflights users on 6/12. 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.
Tue 11/183:30 pmPHL - ICN
2 stops35h 35mMultiple Airlines
Sun 2/86:45 pmICN - PHL
2 stops58h 05mMultiple Airlines
Deal found 6/12$900
This Japan Airlines deal was found by Cheapflights users on 6/11. 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.
Tue 11/48:20 amPHL - GMP
2 stops24h 00mMultiple Airlines
Tue 11/187:50 amGMP - PHL
2 stops21h 19mMultiple Airlines
Deal found 6/11$932
This United Airlines deal was found by Cheapflights users on 6/10. 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 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
3 stops26h 15mUnited Airlines
Deal found 6/10$954
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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 10/2112:50 pmPHL - GMP
2 stops33h 15mANA
Tue 11/47:50 pmGMP - PHL
2 stops32h 17mANA
Deal found 6/11$1,549
This Air China deal was found by Cheapflights users on 6/10. 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 Air China is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/2410:35 amPHL - GMP
2 stops38h 25mAir China
Wed 7/238:35 amGMP - PHL
2 stops33h 51mAir China
Deal found 6/10$2,762

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 13, 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 9/1

9:15 pm-10:45 am

2 stops24h 30m

Seoul Gimpo Intl

Wed 9/17

7:55 am-4:27 pm

2 stops21h 32m

$817

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sat 9/13

8:15 am-4:20 am

2 stops31h 05m

Incheon Intl

Sun 9/21

4:50 pm-5:26 am

1 stop25h 36m

$856

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Mon 9/29

9:42 am-4:25 pm

1 stop17h 43m

Incheon Intl

Sat 10/11

6:40 pm-11:43 pm

1 stop18h 03m

$857

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Mon 9/1

3:20 pm-4:15 pm

1 stop35h 55m

Incheon Intl

Wed 9/17

6:00 pm-2:38 pm

1 stop33h 38m

$866

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Tue 10/14

9:00 pm-3:30 pm

1 stop29h 30m

Incheon Intl

Tue 10/28

6:50 pm-12:57 am

1 stop19h 07m

$867

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Tue 11/18

3:30 pm-5:05 pm

2 stops35h 35m

Incheon Intl

Sun 2/8

6:45 pm-2:50 pm

2 stops58h 05m

$900

PhiladelphiaSeoul

PHL - GMP

PHLGMP

Philadelphia

Tue 11/4

8:20 am-10:20 pm

2 stops24h 00m

Seoul Gimpo Intl

Tue 11/18

7:50 am-3:09 pm

2 stops21h 19m

$932

PhiladelphiaSeoul

PHL - GMP

PHLGMP

Philadelphia

Tue 10/21

12:50 pm-11:05 am

2 stops33h 15m

Seoul Gimpo Intl

Tue 11/4

7:50 pm-2:07 pm

2 stops32h 17m

$1,549

PhiladelphiaSeoul

PHL - GMP

PHLGMP

Philadelphia

Tue 6/24

10:35 am-2:00 pm

2 stops38h 25m

Seoul Gimpo Intl

Wed 7/23

8:35 am-5:26 am

2 stops33h 51m

$2,762

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Mon 9/22

5:00 am-3:30 pm

1 stop21h 30m

$422

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 20 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 9, 2025.

To ensure you get the cheapest price possible for a flight from Philadelphia to Seoul, you should look to book at least 4 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 13, 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 13, 2025.
Read through reviews of airlines operating flights from Philadelphia to Seoul, such as Japan Airlines, ANA and Alaska Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Japan Airlines
8.3
Very good
1,490 reviews

Overall

8.3

Boarding

8.4

Entertainment

7.8

Food

7.7

Crew

8.7

Comfort

8.2

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.
Japan Airlines
8.3
Very good
1,490 reviews
Japan Airlines
8.3
Very good
1,490 reviews

Overall

8.3

Boarding

8.4

Entertainment

7.8

Food

7.7

Crew

8.7

Comfort

8.2

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.
ANA
8.3
Very good
882 reviews
Japan Airlines
8.3
Very good
1,490 reviews

Overall

8.3

Boarding

8.4

Entertainment

7.8

Food

7.7

Crew

8.7

Comfort

8.2

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.
Alaska Airlines
8.0
Very good
10,000 reviews
Japan Airlines
8.3
Very good
1,490 reviews

Overall

8.3

Boarding

8.4

Entertainment

7.8

Food

7.7

Crew

8.7

Comfort

8.2

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.
Delta
8.0
Very good
7,951 reviews
Japan Airlines
8.3
Very good
1,490 reviews

Overall

8.3

Boarding

8.4

Entertainment

7.8

Food

7.7

Crew

8.7

Comfort

8.2

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.
United Airlines
7.4
Good
8,791 reviews
Japan Airlines
8.3
Very good
1,490 reviews

Overall

8.3

Boarding

8.4

Entertainment

7.8

Food

7.7

Crew

8.7

Comfort

8.2

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.

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 $817, 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 United Airlines and Delta - these airlines can fly you to your destination from $856 and $857, 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 $422 on American Airlines. Other airlines that offer cheap prices include Air Canada from $493 and Delta from $518 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

Browse thousands of different options on Cheapflights for your next trip

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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 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$601Average$1,178FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$795Average$1,095FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$866Average$1,438FlexibilityNo cancel feeOn-time71%
DeltaCheapest$872Average$1,192FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$1,076Average$1,493FlexibilityNo cancel feeOn-time81%

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