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$431+ Cheap flights from Incheon Intl (ICN) to Philadelphia (PHL)

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 2/24. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — PHL
Jan 7 — Jan 141
Wed 1/7
Wed 1/14
1 adult, Economy
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Cheap flight deals from Incheon Intl to Philadelphia

Cheapest flights from Incheon Intl to Philadelphia
Explore the most affordable flight options available from Incheon Intl to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 8, 2025.

This WhyPayMore 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/268:35 pmICN - PHL
1 stop23h 02mHawaiian Airlines
Sat 1/107:06 pmPHL - ICN
1 stop33h 29mHawaiian Airlines
Deal found 12/7$503
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/267:30 pmICN - PHL
1 stop18h 25mDelta
Sat 1/105:17 pmPHL - ICN
2 stops32h 13mDelta
Deal found 12/8$633
This American Airlines deal was found by Cheapflights users on 12/6. 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 12/247:15 pmICN - PHL
2 stops26h 42mAmerican Airlines
Mon 12/299:15 pmPHL - ICN
1 stop29h 30mAmerican Airlines
Deal found 12/6$701
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/177:30 pmICN - PHL
1 stop18h 27mDelta
Thu 1/86:02 amPHL - ICN
1 stop20h 33mDelta
Deal found 12/8$724
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.
Thu 12/186:00 pmICN - PHL
1 stop25h 11mUnited Airlines
Thu 1/88:35 amPHL - ICN
1 stop31h 05mUnited Airlines
Deal found 12/8$739
This Booking.com deal was found by Cheapflights users on 12/5. 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.
Thu 12/116:55 pmICN - PHL
2 stops33h 55mAir Canada
Mon 6/84:50 pmPHL - ICN
2 stops34h 25mAir Canada
Deal found 12/5$742
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/177:30 pmICN - PHL
1 stop18h 27mDelta
Sat 1/106:02 amPHL - ICN
1 stop20h 33mDelta
Deal found 12/8$775
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/172:30 pmICN - PHL
2 stops24h 21mDelta
Fri 1/96:02 amPHL - ICN
1 stop20h 33mDelta
Deal found 12/8$780

Find flight deals from Incheon Intl to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Incheon Intl (ICN) to Philadelphia (PHL). 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 8, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$503
(WhyPayMore)

One-way from

$431
(Kiwi.com)

Popular in

August

Cheapest in

November

Average price

$929
Provider with most accurate pricing for Incheon Intl-Philadelphia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Incheon Intl-Philadelphia flights.
Search Deals
From Incheon Intl to Philadelphia
Search Deals
One-way flight from Incheon Intl to Philadelphia
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($87 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Incheon Intl to Philadelphia 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 8, 2025.
Use the filters below to find and compare flights from Incheon Intl Airport to Philadelphia that are best for you.

Fly from

Incheon Intl

Fly to

Philadelphia

Route

Depart

Return

Price

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Fri 12/26

8:35 pm-5:37 am

1 stop23h 02m

Philadelphia

Sat 1/10

7:06 pm-6:35 pm

1 stop33h 29m

$503

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Fri 1/30

12:45 pm-2:31 pm

3 stops39h 46m

Philadelphia

Sun 2/8

5:50 pm-4:15 pm

2 stops32h 25m

$539

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Fri 2/20

12:45 pm-9:33 pm

1 stop22h 48m

Philadelphia

Mon 3/2

8:00 am-5:40 am

2 stops31h 40m

$539

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Thu 2/19

12:45 pm-10:24 am

2 stops35h 39m

Philadelphia

Mon 2/23

6:20 pm-4:15 pm

1 stop31h 55m

$539

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Thu 2/5

7:15 pm-9:03 am

1 stop27h 48m

$439

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Wed 2/25

7:15 pm-9:29 am

1 stop28h 14m

$448

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Fri 3/6

7:15 pm-7:54 am

2 stops26h 39m

$449

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Tue 2/24

7:30 pm-10:31 am

1 stop29h 01m

$451

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Fri 3/6

7:40 pm-11:46 pm

1 stop18h 06m

$451

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/6

Compare providers for flights from Incheon Intl to Philadelphia

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 Incheon Intl to Philadelphia in December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
ExpediaPrice Accuracy2 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 Incheon Intl Airport-Philadelphia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Incheon Intl Airport-Philadelphia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Incheon Intl Airport-Philadelphia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Incheon Intl Airport-Philadelphia flights, Cheapflights users trust Expedia the most. Expedia 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 Incheon Intl Airport-Philadelphia 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 Incheon Intl to Philadelphia

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

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

Currently, December is the cheapest month in which you can book a flight from Incheon Intl Airport to Philadelphia (average of $285). Flying from Incheon Intl Airport to Philadelphia in July is currently the most expensive (average of $638). 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 ICN to PHL?

Find hourly flight availability from Incheon Intl to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 8, 2025.

It’s typically best to fly out from Incheon Intl Airport to Philadelphia in the morning. Doing so could potentially save you 26% on the flight price compared to flying at noon, which is usually more expensive.

How much does it cost to fly round-trip from Incheon Intl Airport to Philadelphia?

Reviews of airlines servicing Philadelphia

Get insights into the airlines that provide service to Philadelphia. 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 Philadelphia. Reviews last updated December 8, 2025.
Peruse reviews from past customers who have flown with Korean Air and Delta from Incheon Intl Airport to Philadelphia 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
1,181 reviews

Boarding

8.5

Crew

8.7

Overall

8.4

Entertainment

8.2

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Korean Air
8.4
Very good
1,181 reviews
Korean Air
8.4
Very good
1,181 reviews

Boarding

8.5

Crew

8.7

Overall

8.4

Entertainment

8.2

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Delta
7.9
Good
8,011 reviews
Korean Air
8.4
Very good
1,181 reviews

Boarding

8.5

Crew

8.7

Overall

8.4

Entertainment

8.2

Food

8.1

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Related info for your journey

Find useful and relevant information for your journey from Incheon Intl to Philadelphia. 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 into for flights to Philadelphia from Incheon Intl?

    Philadelphia (PHL) is the airport you will fly into if you book a flight from Incheon Intl to Philadelphia. You should not have trouble finding flights to Philadelphia from Incheon Intl; the airport handles an average of 0 inbound flights from Incheon Intl per day. You should also have plenty of airline options to choose from since 2 airlines have flights to the Philadelphia airport from Incheon Intl. It is only a 7.0 mi journey from Philadelphia (PHL) to Philadelphia’s city center.

  • How long is the flight from Incheon Intl Airport to Philadelphia?

    For as low as $503, Hawaiian Airlines can have you in Philadelphia from Incheon Intl Airport in 23h 02m. Airlines will cover a distance of 6915 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Incheon Intl Airport to Philadelphia round-trip?

    Delta, at $626, was found to be the cheapest airline from Incheon Intl Airport to Philadelphia. An alternate airline flying to your destination would be Korean Air. Users have found that Delta is 25% cheaper than the other options available to this destination.

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

    The cheapest airlines for a one-way flight from Incheon Intl Airport to Philadelphia are American Airlines ($379), United Airlines ($411), and Air Canada ($441).

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

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

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

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

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

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

    Currently, December is the cheapest month in which you can book a flight from Incheon Intl Airport to Philadelphia (average of $285). Flying from Incheon Intl Airport to Philadelphia in July is currently the most expensive (average of $638). 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

Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Wildwood
Pottstown
King of Prussia
Reading
Ocean City
Cherry Hill
Lewes
Dewey Beach
Ephrata
Camden
Vineland
Milford
Dover
Elkton
Essington
Willow Grove
New Castle
Newark
Millville
Chester

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Top 2 airlines flying from Incheon Intl to Philadelphia

Discover the top 2 airlines that operate flights from Incheon Intl to Philadelphia. 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 8, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$626Average$882FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$782Average$1,144FlexibilityNo cancel feeOn-time81%

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