HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Incheon Intl

$528+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ICN
May 28 — Jun 41
Thu 5/28
Thu 6/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Philadelphia to Incheon Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 April 28, 2026.

This United Airlines deal was found by Cheapflights users on 4/27. 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.
Wed 9/96:37 pm
PHL
-
ICN
1 stop20h 43m
United Airlines
Wed 9/234:50 pm
ICN
-
PHL
1 stop27h 59m
United Airlines
Deal found 4/27$1,022
This United Airlines deal was found by Cheapflights users on 4/23. 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.
Tue 10/276:10 am
PHL
-
ICN
1 stop20h 05m
United Airlines
Fri 11/612:45 pm
ICN
-
PHL
1 stop18h 13m
United Airlines
Deal found 4/23$1,023
This United Airlines deal was found by Cheapflights users on 4/25. 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 10/49:27 am
PHL
-
ICN
1 stop40h 33m
United Airlines
Mon 10/194:50 pm
ICN
-
PHL
1 stop27h 59m
United Airlines
Deal found 4/25$1,031
This United Airlines deal was found by Cheapflights users on 4/25. 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 10/49:27 am
PHL
-
ICN
1 stop40h 33m
United Airlines
Tue 10/205:15 pm
ICN
-
PHL
2 stops29h 31m
United Airlines
Deal found 4/25$1,036
This United Airlines deal was found by Cheapflights users on 4/25. 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 10/49:27 am
PHL
-
ICN
1 stop40h 33m
United Airlines
Mon 10/2611:45 am
ICN
-
PHL
1 stop33h 00m
United Airlines
Deal found 4/25$1,040
This United Airlines deal was found by Cheapflights users on 4/26. 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.
Sat 8/85:00 pm
PHL
-
ICN
2 stops22h 20m
United Airlines
Sat 8/2911:30 am
ICN
-
PHL
2 stops37h 28m
United Airlines
Deal found 4/26$1,041
This United Airlines deal was found by Cheapflights users on 4/23. 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 5/39:55 am
PHL
-
ICN
2 stops29h 25m
United Airlines
Wed 5/2011:30 am
ICN
-
PHL
1 stop22h 59m
United Airlines
Deal found 4/23$1,067
This United Airlines deal was found by Cheapflights users on 4/23. 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.
Fri 4/246:12 am
PHL
-
ICN
1 stop19h 48m
United Airlines
Fri 5/224:50 pm
ICN
-
PHL
2 stops30h 25m
United Airlines
Deal found 4/23$1,071
This United Airlines deal was found by Cheapflights users on 4/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/49:25 am
PHL
-
ICN
1 stop29h 55m
United Airlines
Tue 8/2511:30 am
ICN
-
PHL
1 stop22h 32m
United Airlines
Deal found 4/22$1,073
This BusinessClass deal was found by Cheapflights users on 4/25. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/56:36 pm
PHL
-
ICN
1 stop20h 44m
Asiana Airlines
Wed 10/2811:45 am
ICN
-
PHL
1 stop18h 13m
Asiana Airlines
Deal found 4/25$1,075
This United Airlines deal was found by Cheapflights users on 4/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/99:30 am
PHL
-
ICN
1 stop40h 30m
United Airlines
Sun 5/174:50 pm
ICN
-
PHL
1 stop28h 10m
United Airlines
Deal found 4/22$1,076

Find 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 April 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,022
(United Airlines)

One-way from

$528
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$956
Provider with most accurate pricing for Philadelphia-Incheon Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Incheon Intl flights.
Search Deals
From Philadelphia to Incheon Intl
Search Deals
One-way flight from Philadelphia to Incheon Intl
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($56 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($59 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 April 28, 2026.
Use the filters below to find and compare flights from Philadelphia to Incheon Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Wed 9/2

6:00 am-3:00 pm

1 stop20h 00m

Incheon Intl

Thu 9/24

11:30 am-9:15 pm

1 stop22h 45m

$1,022

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Mon 8/17

1:04 pm-4:20 am

2 stops26h 16m

Incheon Intl

Fri 8/28

11:30 am-5:30 pm

1 stop19h 00m

$1,027

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sun 9/6

5:15 pm-4:20 am

2 stops22h 05m

Incheon Intl

Sun 10/4

5:15 pm-9:46 am

2 stops29h 31m

$1,027

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Wed 9/9

1:04 pm-4:20 am

2 stops26h 16m

Incheon Intl

Wed 9/23

4:50 pm-10:27 am

2 stops30h 37m

$1,027

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sun 10/4

6:36 pm-3:00 pm

1 stop31h 24m

Incheon Intl

Wed 10/21

11:30 am-9:15 pm

1 stop22h 45m

$1,031

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sat 8/8

5:00 pm-4:20 am

2 stops22h 20m

Incheon Intl

Sat 8/29

11:30 am-11:58 am

2 stops37h 28m

$1,041

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Thu 9/3

9:25 am-4:20 am

1 stop29h 55m

Incheon Intl

Mon 10/19

4:50 pm-7:49 am

1 stop27h 59m

$1,073

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Tue 8/4

5:00 pm-4:20 am

2 stops22h 20m

Incheon Intl

Tue 8/25

4:50 pm-9:43 am

2 stops29h 53m

$1,077

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sat 5/9

6:06 pm-3:00 pm

1 stop31h 54m

Incheon Intl

Fri 5/22

11:30 am-12:59 am

2 stops26h 29m

$1,080
Quickest round-trip

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Tue 10/6

6:13 pm-4:00 am

1 stop20h 47m

Incheon Intl

Tue 10/20

7:40 pm-11:40 pm

1 stop17h 00m

$1,126

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Compare providers for flights from Philadelphia to Incheon Intl

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 Philadelphia to Incheon Intl in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
Justfly.comPrice Accuracy3 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 Philadelphia-Incheon Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Incheon Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-Incheon Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-Incheon Intl Airport 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 Philadelphia-Incheon Intl Airport 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 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?

The best time to book flights from Philadelphia to Incheon Intl Airport is 30 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, January is the cheapest month in which you can book a flight from Philadelphia to Incheon Intl Airport (average of $845). Flying from Philadelphia to Incheon Intl Airport in December is currently the most expensive (average of $1,743). 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.

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

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 April 28, 2026.
See what other customers who have flown with Korean Air,Delta, andUnited Airlines from Philadelphia to Incheon Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,214 reviews

Entertainment

8.2

Overall

8.4

Food

8.1

Boarding

8.5

Crew

8.7

Comfort

8.3

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
1,214 reviews
Korean Air
8.4
Very good
1,214 reviews

Entertainment

8.2

Overall

8.4

Food

8.1

Boarding

8.5

Crew

8.7

Comfort

8.3

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
7.9
Good
8,466 reviews
Korean Air
8.4
Very good
1,214 reviews

Entertainment

8.2

Overall

8.4

Food

8.1

Boarding

8.5

Crew

8.7

Comfort

8.3

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
9,672 reviews
Korean Air
8.4
Very good
1,214 reviews

Entertainment

8.2

Overall

8.4

Food

8.1

Boarding

8.5

Crew

8.7

Comfort

8.3

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
7.1
Good
11,673 reviews
Korean Air
8.4
Very good
1,214 reviews

Entertainment

8.2

Overall

8.4

Food

8.1

Boarding

8.5

Crew

8.7

Comfort

8.3

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.
Air Canada
7.1
Good
10,974 reviews
Korean Air
8.4
Very good
1,214 reviews

Entertainment

8.2

Overall

8.4

Food

8.1

Boarding

8.5

Crew

8.7

Comfort

8.3

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 6 airlines. Philadelphia is conveniently located just 7.0 mi from Philadelphia’s city center.

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

    Departing from Philadelphia to Incheon Intl Airport will take you 20h. There are 6915 mi between Philadelphia and Incheon Intl Airport.

  • 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 $675. Other airlines that can offer you cheap pricing are American Airlines, from $845, and United Airlines, from $845. These flights start at 38% 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?

    $339 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on American Airlines and United Airlines, with prices starting from $394 and $418, 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, January is the cheapest month in which you can book a flight from Philadelphia to Incheon Intl Airport (average of $845). Flying from Philadelphia to Incheon Intl Airport in December is currently the most expensive (average of $1,743). 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 Incheon Intl Airport?

Book flights to Incheon Intl Airport if you plan to visit one of these locations
Seongnam
Suwon

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Philadelphia to Incheon Intl

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Incheon Intl flights
Dulles Intl to Incheon Intl flights
Newark to Incheon Intl flights
Reagan-National to Incheon Intl flights
Harrisburg to Incheon Intl flights

Top 6 airlines flying from Philadelphia to Incheon Intl

Discover the top 6 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 April 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$675Average$1,027FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$845Average$953FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$845Average$1,288FlexibilityNo cancel feeOn-time69%
DeltaCheapest$845Average$1,038FlexibilityNo cancel feeOn-timeN/A
Asiana AirlinesCheapest$915Average$1,115FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$1,129Average$1,306FlexibilityNo cancel feeOn-time81%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.