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Incheon Intl

$422+ Cheap flights from Philadelphia (PHL) to Incheon Intl (ICN)

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 — ICN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Philadelphia to Incheon Intl are usually found in April or March, booked 12 days in advance, depart on a Thursday or Tuesday and return on a Tuesday

Cheap flight deals from Philadelphia to Incheon Intl

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Incheon Intl (ICN). 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 12, 2025.

Round-trip from

$857
(Delta)

One-way from

$422
(American Airlines)

Popular in

December

Cheapest in

April

Average price

$1,166
From Philadelphia to Incheon Intl
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One-way flight from Philadelphia to Incheon Intl
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Highest demand for flights based on searches. 6% potential increase in price ($83 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($43 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 Incheon Intl

Cheapest flights from Philadelphia to Incheon Intl
Explore the most affordable flight options available from Philadelphia to Incheon Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2912:35 pmPHL - ICN
1 stop26h 25mDelta
Sun 10/126:40 pmICN - PHL
1 stop18h 03mDelta
Deal found 6/12$857
This Air Canada 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 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 6/11$866
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/15:00 amPHL - ICN
1 stop21h 30mAmerican Airlines
Sat 10/185:25 pmICN - PHL
1 stop18h 44mAmerican Airlines
Deal found 6/12$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 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 9/286:34 amPHL - ICN
1 stop19h 26mUnited Airlines
Fri 10/1011:30 amICN - PHL
3 stops26h 15mUnited Airlines
Deal found 6/10$954

Cheapflights Fare Finder

Customize your flight search to find flights from Philadelphia to Incheon Intl 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 12, 2025.
Use the filters below to find and compare flights from Philadelphia to Incheon Intl Airport that are best for you.

Fly from

Philadelphia

Fly to

Incheon Intl

Route

Depart

Return

Price

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Mon 9/29

12:35 pm-4:00 am

1 stop26h 25m

Incheon Intl

Sun 10/12

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

Wed 10/1

5:00 am-3:30 pm

1 stop21h 30m

Incheon Intl

Sat 10/18

5:25 pm-11:09 pm

1 stop18h 44m

$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

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sun 9/28

6:34 am-3:00 pm

1 stop19h 26m

Incheon Intl

Fri 10/10

11:30 am-12:45 am

3 stops26h 15m

$954

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Mon 9/22

5:00 am-3:30 pm

1 stop21h 30m

$422

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Tue 9/23

5:45 am-6:45 pm

3 stops48h 00m

$450

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Thu 9/11

3:25 pm-4:05 pm

2 stops35h 40m

$493

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Fri 7/11

6:00 am-4:25 pm

1 stop21h 25m

$518

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Wed 7/9

8:15 am-4:20 am

3 stops31h 05m

$668

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 13 results
1
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Best time to book a flight from Philadelphia to Incheon Intl

Have a flexible travel schedule? Discover the best time to fly to Incheon Intl 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 Incheon Intl Airport

How far ahead should I book a flight from Philadelphia to Incheon Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Philadelphia to Incheon Intl. Price data was last updated on June 9, 2025.

The best time to book flights from Philadelphia to Incheon Intl Airport is 10 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Philadelphia to Incheon Intl Airport?

Currently, February is the cheapest month in which you can book a flight from Philadelphia to Incheon Intl Airport (average of $1,000). Flying from Philadelphia to Incheon Intl Airport 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 ICN?

Find hourly flight availability from Philadelphia to Incheon Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

When flying from Philadelphia to Incheon Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 46% versus a flight at noon.

Rainfall in Incheon Intl by month

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

In terms of precipitation, rainfall in Incheon Intl Airport ranges from 0.8 - 10.2 inches per month. July is typically the wettest month, when rainfall can reach 10.2 in. January is typically the driest time to visit Incheon Intl Airport when rainfall is around 0.8 in.

Temperature in Incheon Intl by month

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

If weather is an important factor for your trip to Incheon Intl Airport, 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 28.4 F).

Reviews of airlines servicing Incheon Intl

Get insights into the airlines that provide service to Incheon Intl. 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 Incheon Intl. Reviews last updated June 12, 2025.
Peruse reviews from past customers who have flown with Korean Air, Alaska Airlines and Delta from Philadelphia to Seoul to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,088 reviews

Food

8.1

Overall

8.4

Comfort

8.3

Entertainment

8.2

Boarding

8.5

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
1,088 reviews
Korean Air
8.4
Very good
1,088 reviews

Food

8.1

Overall

8.4

Comfort

8.3

Entertainment

8.2

Boarding

8.5

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.
Alaska Airlines
8.0
Very good
10,000 reviews
Korean Air
8.4
Very good
1,088 reviews

Food

8.1

Overall

8.4

Comfort

8.3

Entertainment

8.2

Boarding

8.5

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
8.0
Very good
7,950 reviews
Korean Air
8.4
Very good
1,088 reviews

Food

8.1

Overall

8.4

Comfort

8.3

Entertainment

8.2

Boarding

8.5

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
8,790 reviews
Korean Air
8.4
Very good
1,088 reviews

Food

8.1

Overall

8.4

Comfort

8.3

Entertainment

8.2

Boarding

8.5

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
7.2
Good
10,000 reviews
Korean Air
8.4
Very good
1,088 reviews

Food

8.1

Overall

8.4

Comfort

8.3

Entertainment

8.2

Boarding

8.5

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 Incheon Intl. 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 Incheon Intl?

    Most people fly from Philadelphia (PHL) if they book a flight from Philadelphia to Incheon Intl. On average, Philadelphia has 0 outbound flights to Incheon Intl 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 Incheon Intl Airport round-trip?

    Cheapflights users have booked flights from Philadelphia to Incheon Intl Airport round-trip from $857. Other airlines that can offer you cheap pricing are Air Canada, from $866, and American Airlines, from $867. These flights start at 22% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Philadelphia to Incheon Intl Airport one-way?

    $422 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Air Canada and Delta, with prices starting from $493 and $518, respectively.

  • Can I find deals for flights from Philadelphia to Incheon Intl that include hotel bookings?

    Yes. In addition to deals on Philadelphia to Incheon Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to Incheon Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to Incheon Intl.

  • Can I find deals for business class flights from Philadelphia to Incheon Intl?

    Yes. Cheapflights offers flight deals from Philadelphia to Incheon Intl 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 Incheon Intl Airport?

    Currently, February is the cheapest month in which you can book a flight from Philadelphia to Incheon Intl Airport (average of $1,000). Flying from Philadelphia to Incheon Intl Airport 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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Top 5 airlines flying from Philadelphia to Incheon Intl

Discover the top 5 airlines that operate flights from Philadelphia to Incheon Intl. 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 12, 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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