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Cheap flights from Seoul to Philadelphia from $404

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seoul to Philadelphia departing on 3/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Seoul to Philadelphia

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
7:15 pm - 8:00 am
ICN
-
PHL
26h 45m2 stops
American Airlines Logo
6:30 pm - 4:45 pm
PHL
-
ICN
32h 15m2 stops
$495American Airlines
Thu, Feb 5 - Mon, Feb 9
American Airlines Logo
7:15 pm - 9:38 am
ICN
-
PHL
28h 23m2 stops
American Airlines Logo
6:30 pm - 4:45 pm
PHL
-
ICN
32h 15m2 stops
$496American Airlines
Thu, Feb 5 - Mon, Feb 9
Multiple Airlines Logo
8:35 pm - 6:03 pm
ICN
-
PHL
35h 28m1 stop
Multiple Airlines Logo
6:20 pm - 6:35 pm
PHL
-
ICN
34h 15m1 stop
$513Multiple Airlines
Fri, Feb 6 - Fri, Feb 13
Multiple Airlines Logo
8:35 pm - 6:03 pm
ICN
-
PHL
35h 28m1 stop
Multiple Airlines Logo
6:20 pm - 6:35 pm
PHL
-
ICN
34h 15m1 stop
$532Multiple Airlines
Mon, Feb 2 - Fri, Feb 27
United Airlines Logo
6:00 pm - 9:52 pm
ICN
-
PHL
17h 52m1 stop
United Airlines Logo
8:35 am - 4:15 pm
PHL
-
ICN
41h 40m1 stop
$538United Airlines
Fri, Jan 30 - Sun, Feb 8
United Airlines Logo
4:50 pm - 9:24 am
ICN
-
PHL
29h 34m2 stops
United Airlines Logo
10:00 am - 3:00 pm
PHL
-
ICN
40h 00m2 stops
$572United Airlines
Thu, May 28 - Sat, Jul 4
United Airlines Logo
12:45 pm - 11:30 pm
ICN
-
PHL
24h 45m2 stops
United Airlines Logo
6:20 pm - 4:15 pm
PHL
-
ICN
31h 55m1 stop
$594United Airlines
Fri, Feb 6 - Fri, Feb 13
United Airlines Logo
12:45 pm - 9:52 pm
ICN
-
PHL
23h 07m1 stop
United Airlines Logo
8:35 am - 4:15 pm
PHL
-
ICN
41h 40m1 stop
$598United Airlines
Sat, Jan 31 - Sun, Feb 22
Japan Airlines Logo
8:00 am - 2:33 pm
GMP
-
PHL
20h 33m2 stops
Japan Airlines Logo
6:15 am - 10:05 pm
PHL
-
GMP
25h 50m2 stops
$1,551Japan Airlines
Fri, Jan 30 - Mon, Feb 2
Japan Airlines Logo
7:40 pm - 2:33 pm
GMP
-
PHL
56h 53m2 stops
Japan Airlines Logo
6:15 am - 10:55 am
PHL
-
GMP
38h 40m2 stops
$1,606Japan Airlines
Fri, Jan 30 - Mon, Feb 2

Alaska Airlines flights from Seoul to Philadelphia

Our best Alaska Airlines deals on Seoul to Philadelphia flight tickets
Alaska Airlines
May 27
ICN8:35 pmIncheon Intl
32h 27m
2 stops
PHL4:02 pmPhiladelphia
Jul 5
PHL5:15 pmPhiladelphia
36h 20m
2 stops
ICN6:35 pmIncheon Intl
$1,143
Find similar
Alaska Airlines
May 27
ICN8:35 pmIncheon Intl
32h 27m
2 stops
PHL4:02 pmPhiladelphia
Jul 6
PHL5:15 pmPhiladelphia
60h 20m
2 stops
ICN6:35 pmIncheon Intl
$1,165
Find similar

United Airlines flights from Seoul to Philadelphia

Our best United Airlines deals on Seoul to Philadelphia flight tickets
United Airlines
Jan 30
ICN12:45 pmIncheon Intl
23h 07m
1 stop
PHL9:52 pmPhiladelphia
Feb 8
PHL8:35 amPhiladelphia
41h 40m
1 stop
ICN4:15 pmIncheon Intl
$537
Find similar
United Airlines
Jan 30
ICN6:00 pmIncheon Intl
17h 52m
1 stop
PHL9:52 pmPhiladelphia
Feb 8
PHL8:35 amPhiladelphia
41h 40m
1 stop
ICN4:15 pmIncheon Intl
$538
Find similar
United Airlines
May 28
ICN4:50 pmIncheon Intl
29h 34m
2 stops
PHL9:24 amPhiladelphia
Jul 4
PHL10:00 amPhiladelphia
40h 00m
2 stops
ICN3:00 pmIncheon Intl
$572
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seoul 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, momondo users made 832,500 searches. Data last updated December 23, 2025.
Use the filters below to find and compare flights from Seoul to Philadelphia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Thu 2/5

7:15 pm-8:00 am

2 stops26h 45m

Philadelphia

Mon 2/9

6:30 pm-4:45 pm

2 stops32h 15m

$495

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Thu 2/5

7:15 pm-9:38 am

2 stops28h 23m

Philadelphia

Mon 2/9

6:30 pm-4:45 pm

2 stops32h 15m

$496

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Fri 2/6

8:35 pm-6:03 pm

1 stop35h 28m

Philadelphia

Fri 2/13

6:20 pm-6:35 pm

1 stop34h 15m

$513

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Mon 2/2

8:35 pm-6:03 pm

1 stop35h 28m

Philadelphia

Fri 2/27

6:20 pm-6:35 pm

1 stop34h 15m

$532

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Fri 1/30

6:00 pm-9:52 pm

1 stop17h 52m

Philadelphia

Sun 2/8

8:35 am-4:15 pm

1 stop41h 40m

$538

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Thu 5/28

4:50 pm-9:24 am

2 stops29h 34m

Philadelphia

Sat 7/4

10:00 am-3:00 pm

2 stops40h 00m

$572

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Fri 2/6

12:45 pm-11:30 pm

2 stops24h 45m

Philadelphia

Fri 2/13

6:20 pm-4:15 pm

1 stop31h 55m

$594

IncheonPhiladelphia

ICN - PHL

ICNPHL

Incheon Intl

Sat 1/31

12:45 pm-9:52 pm

1 stop23h 07m

Philadelphia

Sun 2/22

8:35 am-4:15 pm

1 stop41h 40m

$598

SeoulPhiladelphia

GMP - PHL

GMPPHL

Seoul Gimpo Intl

Fri 1/30

8:00 am-2:33 pm

2 stops20h 33m

Philadelphia

Mon 2/2

6:15 am-10:05 pm

2 stops25h 50m

$1,551

SeoulPhiladelphia

GMP - PHL

GMPPHL

Seoul Gimpo Intl

Fri 1/30

7:40 pm-2:33 pm

2 stops56h 53m

Philadelphia

Mon 2/2

6:15 am-10:55 am

2 stops38h 40m

$1,606

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 Philadelphia from

How to get the cheapest flight ticket from Seoul to Philadelphia

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 Philadelphia?

The cheapest month to fly to Philadelphia from Seoul is in February. Flight prices, which tend to average around $620, are often lower during this time because this is during the off-season. The month of October is another great option to travel to Philadelphia, with average flight prices from Seoul averaging around $689.

What is the cheapest day to depart on your flight to Philadelphia?

The cheapest day to depart from Seoul to Philadelphia is on a Wednesday. Travelers who choose to depart for Philadelphia on a Wednesday will often find tickets for as low as $919. On the other hand, Saturday is the most expensive day to depart from Seoul because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $2,072.

What is the cheapest time of day to depart on your flight to Philadelphia?

According to our data, the cheapest time of day to fly to Philadelphia is in the afternoon. momondo users have found flights departing from Seoul to Philadelphia in the afternoon for as low as $916. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Philadelphia is in the evening when prices are around $1,846.

Can stopping save me money on Seoul to Philadelphia flights?

You could potentially save up to 5% on your flight if you consider stops on a Seoul to Philadelphia flight.

How have Seoul to Philadelphia flight prices changed over time?

As of December 2025, prices for Seoul to Philadelphia flights are approximately 9% cheaper when compared to flights at the same time last year.

When to book flights from Seoul to Philadelphia

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

Cheap Seoul to Philadelphia (SEL to PHL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seoul to Philadelphia

Fastest flight time

20h 33m

Direct flights

None
The fastest flight from Seoul to Philadelphia takes 20h 33m
There are no direct flights from Seoul to Philadelphia. There are no popular flight routes from Seoul to Philadelphia.
Search flight deals

  • How far is Seoul to Philadelphia by plane?

    There are 6895.9 mi between Seoul and Philadelphia. Flights usually cover this in 20h 33m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Seoul to Philadelphia Airport refresh daily.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seoul to Philadelphia Airport.

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

    The required travel and health documents for your Philadelphia Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Philadelphia Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Seoul to Philadelphia?

Best airlines flying from Seoul to Philadelphia

Compare and see reviews for airlines that fly from Seoul to Philadelphia with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $626Free CancellationRating
7.9
8,014 reviews
Search Delta flights

Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Wildwood
Cape May
Rehoboth Beach
Wildwood Crest
Ocean City
King of Prussia
Cherry Hill
Newark
Dewey Beach
Reading
North Wildwood
Avalon
Dover
Lewes
Stone Harbor
Essington
Vineland
Pottstown
Elkton
Somers Point

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seoul to Philadelphia. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Philadelphia from Seoul on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential Seoul to Philadelphia flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

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

An easier way to manage your Philadelphia trip

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