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$416+ 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 5/29. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — PHL
Apr 22 — Apr 291
Wed 4/22
Wed 4/29
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 March 23, 2026.

This Delta deal was found by Cheapflights users on 3/21. 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.
Thu 9/247:00 pm
ICN
-
PHL
1 stop24h 05m
Delta
Wed 9/306:15 am
PHL
-
ICN
1 stop22h 05m
Delta
Deal found 3/21$604
This Delta deal was found by Cheapflights users on 3/19. 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.
Tue 11/178:05 pm
ICN
-
PHL
2 stops23h 36m
Delta
Sun 11/226:15 am
PHL
-
ICN
1 stop19h 35m
Delta
Deal found 3/19$605
This Alaska Airlines deal was found by Cheapflights users on 3/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/98:00 pm
ICN
-
PHL
1 stop34h 56m
Alaska Airlines
Wed 11/115:56 pm
PHL
-
ICN
1 stop33h 39m
Alaska Airlines
Deal found 3/22$694
This Delta deal was found by Cheapflights users on 3/19. 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.
Tue 4/217:00 pm
ICN
-
PHL
2 stops23h 59m
Delta
Thu 4/237:15 am
PHL
-
ICN
1 stop19h 05m
Delta
Deal found 3/19$706
This Ovago deal was found by Cheapflights users on 3/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/44:25 pm
ICN
-
PHL
1 stop17h 28m
Korean Air
Mon 5/116:24 pm
PHL
-
ICN
1 stop20h 36m
Korean Air
Deal found 3/20$707
This Delta deal was found by Cheapflights users on 3/19. 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.
Sun 5/37:20 pm
ICN
-
PHL
1 stop23h 39m
Delta
Sun 5/107:10 am
PHL
-
ICN
1 stop20h 30m
Delta
Deal found 3/19$722
This Delta deal was found by Cheapflights users on 3/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/17:00 pm
ICN
-
PHL
2 stops23h 59m
Delta
Fri 5/87:10 am
PHL
-
ICN
1 stop20h 30m
Delta
Deal found 3/18$725
This Delta deal was found by Cheapflights users on 3/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/94:10 pm
ICN
-
PHL
2 stops20h 52m
Delta
Fri 12/46:00 am
PHL
-
ICN
1 stop20h 35m
Delta
Deal found 3/18$738
This Delta deal was found by Cheapflights users on 3/20. 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 5/47:20 pm
ICN
-
PHL
1 stop23h 39m
Delta
Mon 5/117:10 am
PHL
-
ICN
1 stop20h 30m
Delta
Deal found 3/20$772

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 March 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$706
(Delta)

One-way from

$416
(Delta)

Popular in

August

Cheapest in

November

Average price

$1,081
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. 7% potential increase in price ($72 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 March 23, 2026.
Use the filters below to find and compare flights from Incheon Intl Airport to Philadelphia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Mon 5/4

7:00 pm-5:59 am

2 stops23h 59m

Philadelphia

Mon 5/11

7:10 am-4:40 pm

1 stop20h 30m

$772

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Sun 5/3

7:20 pm-5:59 am

1 stop23h 39m

Philadelphia

Sun 5/10

6:12 am-4:40 pm

2 stops21h 28m

$823

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Wed 4/22

7:35 pm-6:02 am

1 stop23h 27m

Philadelphia

Fri 4/24

6:58 pm-5:30 pm

1 stop33h 32m

$949

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Mon 5/4

7:05 pm-2:48 pm

2 stops32h 43m

Philadelphia

Mon 5/11

3:25 pm-4:05 pm

2 stops35h 40m

$958

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Wed 5/13

7:00 pm-5:37 am

1 stop23h 37m

Philadelphia

Sun 5/31

7:10 am-4:50 pm

1 stop20h 40m

$975

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Wed 6/3

7:35 pm-5:35 am

1 stop23h 00m

Philadelphia

Tue 6/9

7:16 pm-5:30 pm

1 stop33h 14m

$1,008
Quickest round-trip

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Tue 6/2

2:30 pm-11:07 pm

2 stops21h 37m

Philadelphia

Sat 6/6

7:10 am-4:40 pm

1 stop20h 30m

$1,098

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Wed 6/17

11:30 am-1:29 am

1 stop26h 59m

Philadelphia

Fri 7/10

6:23 pm-4:20 am

1 stop20h 57m

$1,253

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Mon 6/15

4:50 pm-7:50 am

1 stop28h 00m

Philadelphia

Thu 7/9

6:00 am-3:00 pm

1 stop20h 00m

$1,299

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Sat 6/20

11:30 am-5:31 am

2 stops31h 01m

Philadelphia

Wed 7/8

6:23 pm-4:20 am

1 stop20h 57m

$1,349

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/22

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

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 March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust 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 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 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 May is currently the most expensive (average of $543). 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.

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 March 23, 2026.
Peruse reviews from past customers who have flown with 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.
Delta
7.9
Good
8,319 reviews

Entertainment

7.8

Crew

8.5

Comfort

7.9

Food

7.2

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,319 reviews
Delta
7.9
Good
8,319 reviews

Entertainment

7.8

Crew

8.5

Comfort

7.9

Food

7.2

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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 1 airline has 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 $949, Delta can have you in Philadelphia from Incheon Intl Airport in 23h 27m. Airlines will cover a distance of 6915 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Incheon Intl Airport to Philadelphia round-trip?

    Delta, at $626, was found to be the cheapest airline from Incheon Intl Airport to Philadelphia.. 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 Air Canada ($324), American Airlines ($439), and United Airlines ($451).

  • 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 May is currently the most expensive (average of $543). 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
Reading
King of Prussia
Camden
Ocean City
Lewes
Dewey Beach
Pottstown
Ephrata
Vineland
Milford
Cherry Hill
Dover
Elkton
Essington
Willow Grove
New Castle
Millville
Glen Mills
Chester

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Alternative routes for Incheon Intl to Philadelphia

See prices for flight routes from nearby airports that may be better suited for you.
Incheon Intl to Newark flights
Incheon Intl to Pittsburgh flights
Incheon Intl to Harrisburg flights

Top airline flying from Incheon Intl to Philadelphia

Discover the top airline 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 March 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$626Average$877FlexibilityNo cancel feeOn-timeN/A

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