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Cheap flights from Philadelphia to Seoul from $375

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Seoul departing on 1/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
4:35 pm - 6:25 pm
PHL
-
ICN
35h 50m1 stop
Air Canada Logo
8:10 pm - 10:46 pm
ICN
-
PHL
16h 36m1 stop
$375Air Canada
Sun, Jan 11 - Mon, Jan 26
Air Canada Logo
7:50 am - 6:25 pm
PHL
-
ICN
20h 35m1 stop
Air Canada Logo
5:55 pm - 10:46 pm
ICN
-
PHL
18h 51m2 stops
$477Air Canada
Fri, Jan 30 - Fri, Feb 6
Air Canada Logo
4:25 pm - 4:05 pm
PHL
-
ICN
34h 40m2 stops
Air Canada Logo
5:45 pm - 9:32 am
ICN
-
PHL
28h 47m2 stops
$804Air Canada
Sun, Apr 19 - Tue, May 19
Air Canada Logo
9:15 am - 5:30 pm
PHL
-
ICN
19h 15m1 stop
Air Canada Logo
7:05 pm - 2:48 pm
ICN
-
PHL
32h 43m2 stops
$807Air Canada
Thu, Apr 16 - Tue, May 5
Air Canada Logo
3:30 pm - 5:10 pm
PHL
-
ICN
35h 40m2 stops
Air Canada Logo
6:55 pm - 2:47 pm
ICN
-
PHL
33h 52m2 stops
$808Air Canada
Sun, Jan 11 - Mon, Jan 26
Air Canada Logo
3:30 pm - 5:10 pm
PHL
-
ICN
35h 40m2 stops
Air Canada Logo
6:55 pm - 2:47 pm
ICN
-
PHL
33h 52m2 stops
$809Air Canada
Sun, Jan 11 - Mon, Jan 26
Air Canada Logo
3:30 pm - 5:10 pm
PHL
-
ICN
35h 40m2 stops
Air Canada Logo
8:10 pm - 10:46 pm
ICN
-
PHL
16h 36m1 stop
$811Air Canada
Sun, Jan 18 - Mon, Jan 26
Air Canada Logo
3:30 pm - 5:10 pm
PHL
-
ICN
35h 40m2 stops
Air Canada Logo
8:10 pm - 10:46 pm
ICN
-
PHL
16h 36m1 stop
$812Air Canada
Sun, Jan 11 - Mon, Jan 26
Air Canada Logo
4:35 pm - 6:25 pm
PHL
-
ICN
35h 50m1 stop
Air Canada Logo
8:10 pm - 3:49 pm
ICN
-
PHL
33h 39m1 stop
$814Air Canada
Sun, Jan 18 - Mon, Mar 2
Air Canada Logo
4:35 pm - 6:25 pm
PHL
-
ICN
35h 50m1 stop
Air Canada Logo
8:10 pm - 10:46 pm
ICN
-
PHL
16h 36m1 stop
$815Air Canada
Sun, Jan 11 - Mon, Jan 26

United Airlines flights from Philadelphia to Incheon Intl Airport

Our best United Airlines deals on Philadelphia to Incheon Intl Airport flight tickets
United Airlines
Jan 11
PHL1:10 pmPhiladelphia
26h 30m
2 stops
ICN5:40 amIncheon Intl
Jan 26
ICN12:45 pmIncheon Intl
39h 46m
3 stops
PHL2:31 pmPhiladelphia
$837
Find similar
United Airlines
Jan 1
PHL8:15 amPhiladelphia
31h 25m
1 stop
ICN5:40 amIncheon Intl
Jan 26
ICN6:00 pmIncheon Intl
17h 52m
1 stop
PHL9:52 pmPhiladelphia
$846
Find similar
United Airlines
Jan 18
PHL8:35 amPhiladelphia
31h 05m
1 stop
ICN5:40 amIncheon Intl
Jan 22
ICN12:45 pmIncheon Intl
24h 14m
2 stops
PHL10:59 pmPhiladelphia
$850
Find similar

Delta flights from Philadelphia to Incheon Intl Airport

Our best Delta deals on Philadelphia to Incheon Intl Airport flight tickets
Delta
Jan 18
PHL6:15 amPhiladelphia
19h 15m
1 stop
ICN3:30 pmIncheon Intl
Jan 24
ICN9:35 amIncheon Intl
20h 59m
1 stop
PHL4:34 pmPhiladelphia
$846
Find similar
Delta
Jan 1
PHL8:08 amPhiladelphia
31h 37m
2 stops
ICN5:45 amIncheon Intl
Jan 27
ICN6:00 pmIncheon Intl
18h 50m
1 stop
PHL10:50 pmPhiladelphia
$850
Find similar
Delta
Jan 1
PHL7:00 amPhiladelphia
32h 45m
1 stop
ICN5:45 amIncheon Intl
Jan 27
ICN6:00 pmIncheon Intl
18h 50m
1 stop
PHL10:50 pmPhiladelphia
$851
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Philadelphia to Incheon Intl Airport 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, momondo users made 832,500 searches. Data last updated December 18, 2025.
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

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sun 1/11

4:35 pm-6:25 pm

1 stop35h 50m

Incheon Intl

Mon 1/26

8:10 pm-10:46 pm

1 stop16h 36m

$375

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Fri 1/30

7:50 am-6:25 pm

1 stop20h 35m

Incheon Intl

Fri 2/6

5:55 pm-10:46 pm

2 stops18h 51m

$477

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sun 4/19

4:25 pm-4:05 pm

2 stops34h 40m

Incheon Intl

Tue 5/19

5:45 pm-9:32 am

2 stops28h 47m

$804

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Thu 4/16

9:15 am-5:30 pm

1 stop19h 15m

Incheon Intl

Tue 5/5

7:05 pm-2:48 pm

2 stops32h 43m

$807

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sun 1/11

3:30 pm-5:10 pm

2 stops35h 40m

Incheon Intl

Mon 1/26

6:55 pm-2:47 pm

2 stops33h 52m

$808

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sun 1/11

3:30 pm-5:10 pm

2 stops35h 40m

Incheon Intl

Mon 1/26

6:55 pm-2:47 pm

2 stops33h 52m

$809

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sun 1/18

3:30 pm-5:10 pm

2 stops35h 40m

Incheon Intl

Mon 1/26

8:10 pm-10:46 pm

1 stop16h 36m

$811

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sun 1/11

3:30 pm-5:10 pm

2 stops35h 40m

Incheon Intl

Mon 1/26

8:10 pm-10:46 pm

1 stop16h 36m

$812

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sun 1/18

4:35 pm-6:25 pm

1 stop35h 50m

Incheon Intl

Mon 3/2

8:10 pm-3:49 pm

1 stop33h 39m

$814

PhiladelphiaIncheon

PHL - ICN

PHLICN

Philadelphia

Sun 1/11

4:35 pm-6:25 pm

1 stop35h 50m

Incheon Intl

Mon 1/26

8:10 pm-10:46 pm

1 stop16h 36m

$815

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seoul from

How to get the cheapest flight ticket from Philadelphia to Incheon Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Incheon Intl Airport?

The cheapest month to fly to Incheon Intl Airport from Philadelphia is in March. Flight prices, which tend to average around $866, are often lower during this time because this is during the off-season. If you are unable to visit Incheon Intl Airport during the month of March, then departing from Philadelphia during the month November is also very affordable. Most momondo users find prices during this month for around $868.

What is the cheapest day to depart on your flight to Incheon Intl Airport?

The cheapest day to depart from Philadelphia to Incheon Intl Airport is on a Thursday when prices can be found for as low as $1,178. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $1,457. These prices are subject to change though, so be sure to set up a Price Alert for flights to Incheon Intl Airport.

What is the cheapest time of day to depart on your flight to Incheon Intl Airport?

In the morning is the cheapest time of day to fly from Philadelphia to Incheon Intl Airport when you can find flight prices for as low as $1,241. Flying to Incheon Intl Airport in the morning is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $2,271 on average. Flights to Incheon Intl Airport from Philadelphia at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to Incheon Intl Airport?

You are more likely to see cheaper flights to Incheon Intl Airport from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to Incheon Intl Airport for around $1,085 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Incheon Intl Airport from Philadelphia for as low as $949 on momondo.

How have Philadelphia to Incheon Intl Airport flight prices changed over time?

As of December 2025, prices for Philadelphia to Incheon Intl Airport flights are approximately 35% cheaper when compared to flights at the same time last year.

When to book flights from Philadelphia to Incheon Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Philadelphia to Incheon Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Philadelphia to Incheon Intl Airport (PHL to ICN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to Incheon Intl Airport

Fastest flight time

17h 20m

Direct flights

None
The fastest flight from Philadelphia to Incheon Intl Airport takes 17h 20m
There are no direct flights from Philadelphia to Incheon Intl Airport. There are no popular flight routes from Philadelphia to Incheon Intl Airport.
Search flight deals

  • How far is Philadelphia to Incheon Intl by plane?

    Philadelphia and Incheon Intl are 6911.2 mi apart from one another. A reasonable flight in good conditions will take 17h 20m.

  • When did momondo last update prices for flights from Philadelphia Airport to Incheon Intl Airport?

    Prices for flights from Philadelphia Airport to Incheon Intl Airport refresh daily.

  • How many operators does momondo search for flights from Philadelphia Airport to Incheon Intl Airport?

  • How old do you have to be to fly from Philadelphia Airport to Incheon Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to Incheon Intl Airport.

  • What documentation or ID do you need to fly to Incheon Intl Airport?

    The travel and health documents you'll need for your trip to Incheon Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Incheon Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Philadelphia to Incheon Intl Airport?

Best airlines flying from Philadelphia to Incheon Intl Airport

Compare and see reviews for airlines that fly from Philadelphia to Incheon Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $533Free CancellationRating
7.4
9,093 reviews
Search United Airlines flights
Air CanadaPriceFrom $795Free CancellationRating
7.1
10,534 reviews
Search Air Canada flights
DeltaPriceFrom $848Free CancellationRating
7.9
8,008 reviews
Search Delta flights
American AirlinesPriceFrom $871Free CancellationRating
7.2
11,055 reviews
Search American Airlines flights
Korean AirPriceFrom $1,060Free CancellationRating
8.4
1,186 reviews
Search Korean Air flights

Traveling to a place near Seoul?

Book flights to Seoul if you plan to visit one of these locations
Suwon
Seongnam
Daejeon
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Why use momondo?

Why should I use momondo to find a flight deal from Philadelphia to Seoul?

It is quick and easy to find Philadelphia to Seoul flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Seoul that suits you.

Can I find flights from Philadelphia to Seoul with flexible booking policies on momondo?

Flights from Philadelphia to Seoul with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Philadelphia to Seoul?

momondo helps you find the best flight between Philadelphia and Seoul by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Philadelphia to Seoul right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Seoul, momondo offers a useful price alert feature which will track prices for flights to Seoul from Philadelphia and alert you when they change.

An easier way to manage your Incheon Intl Airport trip

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