PHL - ICN

$391 Find Cheap Flights from Philadelphia to Seoul Incheon Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to Incheon Intl departing on 10/16. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Incheon Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Incheon, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Incheon, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Philadelphia to Incheon Intl (PHL-ICN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to Incheon Intl 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 Philadelphia to Incheon Intl

Tue, Oct 28 - Tue, Nov 4
United Airlines Logo
10:34 am - 4:40 amPHL-ICN
29h 06m2 stops
United Airlines Logo
12:45 pm - 7:27 pmICN-PHL
20h 42m2 stops
$779United Airlines
Find Deal
Fri, Oct 24 - Mon, Nov 3
Delta Logo
6:00 am - 4:30 pmPHL-ICN
21h 30m2 stops
Delta Logo
8:05 pm - 5:50 amICN-PHL
23h 45m2 stops
$805Delta
Find Deal
Sat, Sep 27 - Fri, Oct 24
Delta Logo
6:00 am - 5:20 pmPHL-ICN
22h 20m1 stop
Delta Logo
10:15 am - 7:14 pmICN-PHL
21h 59m1 stop
$826Delta
Find Deal
Sat, Sep 27 - Mon, Nov 24
Air Canada Logo
3:25 pm - 4:05 pmPHL-ICN
35h 40m2 stops
Air Canada Logo
6:55 pm - 2:47 pmICN-PHL
33h 52m2 stops
$832Air Canada
Find Deal
Sat, Sep 27 - Mon, Nov 24
Air Canada Logo
3:25 pm - 4:05 pmPHL-ICN
35h 40m2 stops
Air Canada Logo
8:10 pm - 3:51 pmICN-PHL
33h 41m1 stop
$838Air Canada
Find Deal
Wed, Oct 1 - Thu, Oct 16
American Airlines Logo
5:00 am - 3:30 pmPHL-ICN
21h 30m1 stop
American Airlines Logo
5:45 pm - 12:48 amICN-PHL
20h 03m1 stop
$846American Airlines
Find Deal
Tue, Nov 4 - Tue, Nov 18
American Airlines Logo
5:00 am - 4:45 pmPHL-ICN
21h 45m1 stop
American Airlines Logo
7:15 pm - 7:36 amICN-PHL
26h 21m2 stops
$851American Airlines
Find Deal
Wed, Oct 1 - Thu, Oct 16
United Airlines Logo
6:34 am - 3:00 pmPHL-ICN
19h 26m1 stop
United Airlines Logo
11:30 am - 12:45 amICN-PHL
26h 15m3 stops
$896United Airlines
Find Deal
Tue, Mar 10 - Mon, Apr 6
Alaska Airlines Logo
6:35 pm - 6:35 pmPHL-ICN
35h 00m1 stop
Alaska Airlines Logo
8:35 pm - 5:23 amICN-PHL
21h 48m1 stop
$905Alaska Airlines
Find Deal
Sat, Jan 10 - Sat, Jan 17
Alaska Airlines Logo
6:35 pm - 6:35 pmPHL-ICN
34h 00m1 stop
Alaska Airlines Logo
8:35 pm - 5:31 pmICN-PHL
34h 56m1 stop
$1,064Alaska Airlines
Find Deal

Everything you should know

Top airlines
United Airlines
Cheapest • from $779 (round-trip)
Korean Air
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
March
Cheapest • 18% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$779
Overall average: $953
United Airlines
Tue 10/28Tue 11/4
PHL - ICN • 2 stops
Cheapest one-way
$391
Typical prices: $482-785
Multiple Airlines
Thu 10/16
PHL - ICN • 1 stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Incheon Intl!
Booking Insights

KAYAK's insights & trends for Philadelphia to Incheon Intl flights

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

What’s the cheapest day of the week to fly from Philadelphia to Seoul Incheon Airport?

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

If your flying dates are flexible, you should consider flying to Seoul Incheon Airport on a Thursday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Philadelphia to Seoul Incheon Airport. For your return ticket, we recommend flying on a Tuesday and avoiding Sundays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Philadelphia to Incheon Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Philadelphia to Incheon Intl Airport is March, where tickets cost $872 (return) on average. On the other hand, the most expensive months are December and May, where the average cost of round-trip tickets is $1,620 and $1,290 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Philadelphia to Incheon Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Philadelphia to Incheon Intl Airport, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$391
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 6% increase in price.
Flight from Philadelphia to Seoul Incheon Airport

When to book flights from Philadelphia to Incheon Intl

Are your dates flexible? Find out the best times to travel from Philadelphia to Incheon Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Philadelphia to Seoul Incheon Airport flights

  • What is the cheapest flight from Philadelphia to Incheon Intl Airport?

    In the last 3 days, the lowest price for a flight from Philadelphia to Incheon Intl Airport was $391 for a one-way ticket and $779 for a round-trip.

  • Do I need a passport to fly between Philadelphia and Seoul Incheon Airport?

    Yes, you’ll need a passport to travel to Seoul Incheon Airport from Philadelphia.

  • Which aircraft models fly most regularly from Philadelphia to Seoul Incheon Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Philadelphia to Seoul Incheon Airport?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Philadelphia and Seoul Incheon Airport, with oneworld being the most commonly used for this route.

  • What is the most popular layover when flying to Seoul Incheon Airport from Philadelphia?

    Toronto is the most popular layover city among KAYAK users traveling from Philadelphia to Seoul Incheon Airport.

  • Which is the best airline for flights from Philadelphia to Incheon, Korean Air or Delta?

    The two airlines most popular with KAYAK users for flights from Philadelphia to Incheon are Korean Air and Delta. With an average price for the route of $1,306 and an overall rating of 8.4, Korean Air is the most popular choice. Delta is also a great choice for the route, with an average price of $1,189 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Philadelphia to Seoul Incheon Airport?

    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 from Philadelphia to Seoul Incheon Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seoul Incheon Airport from 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 from Philadelphia to Seoul Incheon Airport?

    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 Seoul Incheon Airport with an airline and back to Philadelphia with another airline. Booking your flights between Philadelphia and ICN can sometimes prove cheaper using this method.

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

    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 Seoul Incheon Airport from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Philadelphia to Incheon Intl

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to Incheon. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Philadelphia to Incheon Intl? 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.
8.4
Korean AirOverall score based on 1139 reviews
8.3Comfort
8.2Entertainment
8.1Food
8.7Crew
8.5Boarding
Airline reviews

It was good, I liked the self-serve snacks but it was a little difficult to get the alcohol, which is understandable since I wouldn't want kids sneaking it.

8.0 ExcellentMatt, Aug 2025ATL - ICN
Read more Korean Air reviews

It was good, I liked the self-serve snacks but it was a little difficult to get the alcohol, which is understandable since I wouldn't want kids sneaking it.

Friendly flight attendants and gate agents. Very clean plane and food was good!

I normally love Korean Air, but this trip was not great. We boarded the plan and were settling into our seats. My son and I use these leg swings and we used it on the trip over to Cambodia, but on the way back the flight attendant very rudely told us we could not use it and that it was against regulations. I asked to see the regulation, but never saw it. The food on this trip was horrible as well, Even my son's kids meal was disgusting so we didn't eat anything on the flight. Thankfully we brought snacks. Entertainment - what happened to the games?

This was an amazing flight. The crew was great. The service was great. The food provided was great.

I was unable to select decent seats, and so I was stuck in the middle seat because it was selected for me

Korean air has a little bit more seating space than Asiana air.

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

Stingy on the drinks - 15 hour direct flight and could barely get attention for some water

Unfortunately, there has been a boarding and departure delay. However, as usual, the flight arrived earlier than the scheduled. There has been a turbulence in-between, it’s unavoidable. I couldn’t complain them.

Not many people, so you can lay down on two seats

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

The food was terrible especially for a 15 hour international flight. The crew was unpleasant as well.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Quick check in. Everything went smooth. I don't know what can be done about airline food.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Nothing special. The crew never went out of their way for anything.

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

Everything was good, except the seats in economy were so close together, you could barely get out when the seat in front of your was reclined. If the airlines keep jamming in more and more seats, it will become intolerable. I will look for another airline that considers customer comfort and does not keep adding more rows of seats for more profit.

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

IAD with the archaic people movers is just a place to be avoided.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Tastless food and too obvious lack of enthusiasm for service in the economy vesus business class

All of the United employees I interacted with were professional and courteous. The aircraft was clean, the food on the flight was good. No complaints here.

I had no checked baggage but was required to hand over carry on baggage at the door of the plane. There was a lot of overboard space in the plane and I was one of the last ones. I ran to get my carry on but it was gone. I was given back at the plane door in Toronto, so the wait was not as long as it would have been at the carousel.

Armrest controller on my seat 35D and nextbooennseat 35E did not work right. Hard to press buttons to recognize and 35D had constantnpressure either upmost down somit was nearly impossible to make selections. .

Flight was delayed not sure why no explanation given and no apologies either. Otherwise the flight was fine

Did not get the seat I selected and paid for.

The flight was canceled 3 hours after original take off time

Plane was delayed for 6 hours, at first by weather, which is understandable, but was further delayed with NO given reason for 2 1/2 hours more. We had no clue when we were going to depart actually until they opened the ramp. VERY POOR to ZERO COMMUNICATION!!!

Flight was delayed and after being in the airport for like seven hours, it was canceled.

Flight delays numerous times. Everytime we would get close to boarding it would be delayed again. Strung along the entire time.

Overall very good, only complaint I have is the crew from CLT to SAT could have collected trash sooner.

Above and beyond effort from this crew in a tough situation. So helpful and understanding. Thank you!

We started with trouble checking in 24 hours early. Then my husband did not get his TSA precheck. Finally flight delayed due to no crew. I know things happen

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

For the price, it was a really good experience. There was no entertainment on board, so I couldn't really rate this, and I didn't order a meal. I appreciated that there was a free glass of wine.

Short flight. Everything was fine except the flight was delayed twice for a total of an hour.

My flight from New York to Canada and Canada to Brisbane was canceled, so I had to take united airlines instead flight from New York to Dubai then layover in Dubai 8 hours then from Dubai to Brisbane it was extremely difficult for me , it was a nightmare flying with Canadian airlines unfortunately.

I found the boarding easy and my seat was very comfortable as I had a lot of leg room. I am not too happy that I no longer have lounge access even though I used to get it with my TD credit card.

Flight cancelled. Major disruption to our travel. Do not use Air Canada from KC. To few flights.

Real smooth and easy, Real good leg room in coach!

There labor disputes cancelled my flight less than 24 hours before my boarding time but there customer service/website was easy enough to navigate and they rebooked me for no upcharge.

Re luggage I carried a backpack only. I did not check any bags in. However there were other passengers with carry on luggage going in the plane. My question is why are others allowed to have a carry on luggage inside the plane? Shouldn’t they have dropped it off at the gate? I’m asking because I could have brought the same thing instead of a backpack only. Please clarify for future reference. Thank you.

Like the service. Very hard to communicate or contact when have problems

Very bad, flight was cancelled due to strike and staff was unable to rebook us

Everything you need to know for your flight from Philadelphia to Incheon Intl

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.