$418 Find Cheap Flights from South Korea to Philadelphia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Philadelphia departing on 5/21. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Philadelphia

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Philadelphia, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Philadelphia, as well as popular online travel agencies
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Flight Deals

Cheap Flights from South Korea to Philadelphia

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from South Korea to Philadelphia that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from South Korea to Philadelphia

Fri, Sep 11 - Mon, Oct 5
Delta Logo
7:00 pm - 5:43 am
ICN
-
PHL
23h 43m
2 stops
Delta Logo
7:59 pm - 5:20 pm
PHL
-
ICN
32h 21m
2 stops
$605Delta
Wed, Apr 1 - Sat, Apr 25
Delta Logo
7:20 pm - 5:41 am
ICN
-
PHL
23h 21m
1 stop
Delta Logo
6:05 pm - 3:20 pm
PHL
-
ICN
32h 15m
1 stop
$606Delta
Mon, Apr 27 - Mon, May 4
Delta Logo
7:20 pm - 5:59 am
ICN
-
PHL
23h 39m
1 stop
Delta Logo
7:15 am - 3:20 pm
PHL
-
ICN
19h 05m
1 stop
$611Delta
Sat, Sep 12 - Mon, Oct 5
Delta Logo
7:40 pm - 11:40 pm
ICN
-
PHL
17h 00m
1 stop
Delta Logo
7:05 am - 4:50 pm
PHL
-
ICN
20h 45m
1 stop
$655Delta
Wed, Apr 1 - Fri, Apr 24
Delta Logo
7:20 pm - 5:41 am
ICN
-
PHL
23h 21m
1 stop
Delta Logo
6:05 am - 5:20 pm
PHL
-
ICN
22h 15m
1 stop
$656Delta
Fri, May 1 - Wed, May 6
Alaska Airlines Logo
7:35 pm - 6:02 am
ICN
-
PHL
23h 27m
1 stop
Alaska Airlines Logo
7:22 am - 5:30 pm
PHL
-
ICN
21h 08m
1 stop
$713Alaska Airlines
Tue, May 12 - Wed, Jun 24
Korean Air Logo
8:45 am - 8:49 pm
ICN
-
PHL
25h 04m
1 stop
Korean Air Logo
6:20 pm - 4:00 am
PHL
-
ICN
20h 40m
1 stop
$717Korean Air
Wed, Apr 22 - Sun, Apr 26
Korean Air Logo
7:55 am - 12:59 am
TAE
-
PHL
30h 04m
2 stops
Korean Air Logo
5:19 pm - 7:55 pm
PHL
-
TAE
37h 36m
2 stops
$1,187Korean Air
Wed, May 13 - Wed, Jun 24
Japan Airlines Logo
7:15 pm - 2:48 pm
GMP
-
PHL
32h 33m
2 stops
Japan Airlines Logo
7:00 am - 9:15 pm
PHL
-
GMP
25h 15m
2 stops
$1,355Japan Airlines
Tue, Jun 2 - Sat, Jun 6
Japan Airlines Logo
8:00 am - 4:38 pm
GMP
-
PHL
21h 38m
2 stops
Japan Airlines Logo
7:36 am - 9:15 pm
PHL
-
GMP
24h 39m
2 stops
$1,533Japan Airlines
Booking Insights

KAYAK's insights & trends for flights to Philadelphia

Get data-powered insights and trends for flights to Philadelphia to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to Philadelphia?

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.

In the last 3 days, the cheapest flight deal to Philadelphia was found on the route from Incheon, at $605 return. The most popular connection is from Boston to Philadelphia and KAYAK users have found round-trip deals for as low as $144 in the last 3 days.

What is the cheapest day to fly to Philadelphia?

The average price of all round-trip flights to Philadelphia clicked on KAYAK for each day over the last 12 months.

Based on KAYAK data, the cheapest day to fly to Philadelphia is Thursday where round-trip tickets can be as cheap as $313. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $1,392 on average.

Good to know

Low seasonJanuary
Cheapest flight$418
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly with an average 10% increase in price.
Flight from Seoul Incheon Airport to Philadelphia

FAQs - booking Philadelphia flights

  • What is the cheapest flight to Philadelphia?

    In the last 3 days, the cheapest flight deal to Philadelphia was found on the route from Incheon, at $605 return. The most popular connection is from Boston to Philadelphia and KAYAK users have found round-trip deals for as low as $144 in the last 3 days.

  • How far is Philadelphia Airport from central Philadelphia?

    Central Philadelphia is 7 miles away from Philadelphia Airport.

  • What is the name of Philadelphia’s airport?

    There is only 1 airport in Philadelphia, called Philadelphia Airport (PHL). It can also be referred to as Philadelphia or Philadelphia Intl.

  • How does KAYAK find such low prices on flights to Philadelphia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Philadelphia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Philadelphia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Philadelphia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Philadelphia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Philadelphia with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Philadelphia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many direct flights to Philadelphia are there each week?

    Each week there are around 4,480 direct flights from within South Korea to Philadelphia. The most common day for departures is Monday, with 15% of flights taking off on this day.

Top tips for finding cheap flights to Philadelphia

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Philadelphia flight deals.

Reviews of the top airline flying from South Korea to Philadelphia

 
See real verified KAYAK customer reviews for airlines flying to Philadelphia. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from South Korea to Philadelphia. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Philadelphia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8288 reviews
8.5Crew
7.9Comfort
7.2Food
7.8Entertainment
8.1Boarding
Airline reviews

Perhaps when you’re sitting in 1st class and the crew closes the bathroom for the pilots, there could be a notification other than holding your hands up as a blockade when you get there and you’re told the restrooms are closed please turn around … especially at night when visibility is poor and you’re met by a flight attendants with their arms up

10.0 ExcellentDebra, Mar 2026
PBI - ATL
Read more Delta reviews

Perhaps when you’re sitting in 1st class and the crew closes the bathroom for the pilots, there could be a notification other than holding your hands up as a blockade when you get there and you’re told the restrooms are closed please turn around … especially at night when visibility is poor and you’re met by a flight attendants with their arms up

First class is comfortable. Enjoyed a movie and was able to relax compared to coach.

Loved flying First Class. Very comfortable. The seat was amazing. Enjoyed a movie and was able to relax so much better than in coach.

No pilots so we were two hours late taking off and then no gate agents when we arrived in Salt Lake.

We landed and sat on the tarmac for 45 minutes because they only have one gate at the airport and there was another plane running late so we had to wait

The WiFi was not working. That made for a long flight.

Absolutely no communication on why there's a delay and multiple flight time reschedules. I would have canceled the flight and drove back home if I known it was going to be rescheduled 3 or 4 times.

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Wildwood Crest
Newark
North Wildwood
Vineland
Essington
West Chester
Elkton
Pottstown
Willow Grove
Kennett Square
Voorhees
Somers Point
Middletown
Wyomissing
Glen Mills
Phoenixville
Blackwood
Bird in Hand
Millville
Strasburg

Everything you need to know for your flight to Philadelphia

Information on the airport you'll fly into in Philadelphia