PHL - ICN

$528 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 5/11. 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 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.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Incheon.
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Everything you should know

Cheapest round-trip
$1,022
Typical prices: $1,216-$953
United Airlines
Mon 10/5Wed 10/28
PHL - ICN • 1 stop
Cheapest one-way
$638
Typical prices: $632-$949
Air Canada
Mon 5/11
PHL - ICN • 2 stops
Top airlines
Cheapest • from $1,022 (round-trip)
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Philadelphia and Incheon Intl. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $866 (round-trip)
Shortest trip • 17h 27m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 23% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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!
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

Mon, Oct 5 - Wed, Oct 28
United Airlines Logo
6:36 pm - 4:20 am
PHL
-
ICN
20h 44m
1 stop
United Airlines Logo
11:45 am - 4:58 pm
ICN
-
PHL
18h 13m
1 stop
$1,022United Airlines
Sun, Oct 4 - Tue, Oct 20
United Airlines Logo
6:35 pm - 3:00 pm
PHL
-
ICN
31h 25m
2 stops
United Airlines Logo
5:15 pm - 10:27 am
ICN
-
PHL
30h 12m
2 stops
$1,027United Airlines
Sun, Oct 4 - Wed, Oct 21
United Airlines Logo
9:27 am - 3:00 pm
PHL
-
ICN
40h 33m
1 stop
United Airlines Logo
11:30 am - 5:30 pm
ICN
-
PHL
19h 00m
1 stop
$1,031United Airlines
Sun, Oct 4 - Mon, Oct 26
United Airlines Logo
6:35 pm - 3:00 pm
PHL
-
ICN
31h 25m
2 stops
United Airlines Logo
11:45 am - 7:45 am
ICN
-
PHL
33h 00m
1 stop
$1,036United Airlines
Sun, Oct 4 - Mon, Oct 26
United Airlines Logo
9:27 am - 3:00 pm
PHL
-
ICN
40h 33m
1 stop
United Airlines Logo
11:45 am - 7:45 am
ICN
-
PHL
33h 00m
1 stop
$1,040United Airlines
Sat, Aug 8 - Sat, Aug 29
United Airlines Logo
5:00 pm - 4:20 am
PHL
-
ICN
22h 20m
2 stops
United Airlines Logo
11:30 am - 11:58 am
ICN
-
PHL
37h 28m
2 stops
$1,041United Airlines
Mon, Oct 5 - Wed, Oct 28
Asiana Airlines Logo
6:36 pm - 4:20 am
PHL
-
ICN
20h 44m
1 stop
Asiana Airlines Logo
11:45 am - 4:58 pm
ICN
-
PHL
18h 13m
1 stop
$1,075Asiana Airlines
Wed, Jul 22 - Mon, Sep 7
Asiana Airlines Logo
5:00 pm - 4:20 am
PHL
-
ICN
22h 20m
2 stops
Asiana Airlines Logo
5:15 pm - 9:46 am
ICN
-
PHL
29h 31m
2 stops
$1,076Asiana Airlines
Wed, Sep 9 - Wed, Sep 23
Delta Logo
7:00 am - 3:20 pm
PHL
-
ICN
19h 20m
1 stop
Delta Logo
10:15 am - 4:17 pm
ICN
-
PHL
19h 02m
1 stop
$1,077Delta
Wed, Aug 19 - Mon, Sep 28
Asiana Airlines Logo
5:15 pm - 4:20 am
PHL
-
ICN
22h 05m
2 stops
Asiana Airlines Logo
5:15 pm - 9:46 am
ICN
-
PHL
29h 31m
2 stops
$1,079Asiana Airlines
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.

How much is a round-trip flight from Philadelphia to Incheon Intl Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Philadelphia to Incheon Intl Airport departing in October.

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 January, where tickets cost $845 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $1,743 and $1,406 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 17 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$638
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly and prices are also 13% lower on average.
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 $528 for a one-way ticket and $1,022 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?

    oneworld, SkyTeam, and Star Alliance 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 Asiana Airlines?

    The two airlines most popular with KAYAK users for flights from Philadelphia to Incheon are Korean Air and Asiana Airlines. With an average price for the route of $1,310 and an overall rating of 8.4, Korean Air is the most popular choice. Asiana Airlines is also a great choice for the route, with an average price of $1,115 and an overall rating of 8.1.

  • 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 1216 reviews
8.5Boarding
8.7Crew
8.3Comfort
8.2Entertainment
8.1Food
Airline reviews

Always on time and flight crew were great. Boarding in Manila was a bit chaotic and disorganized compared to Incheon.

10.0 ExcellentOmer, Mar 2026
MNL - ICN
Read more Korean Air reviews

Always on time and flight crew were great. Boarding in Manila was a bit chaotic and disorganized compared to Incheon.

Never had a flight delay issue with Korean Air, that's why I always go with this airline.

Flight crew were very attentive and made this trip a pleasure. Plus the fact that this our first time flying business class.

The boarding process was efficient and quick. The seats were comfortable. The food was good. The service was excellent. We had a lovely flight from Seattle on Korean air

Flight crew was fantastic. The aircraft was meticulously cleaned at all times. The crew was continuously checking to see if the passengers were ok.

Korean are so racist and when I ask question or directions they totally ignore me and say racist. Also they give me an rude attitude.

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.

The flight was operated by Latam. The aircraft had a technical issue and the flight was delayed for the next day. They grounded other passengers to get their airplane assigned to my flight. Most of he ground staff don't speak English (Orlando Airport), but were very polite.The crew on the other hand could speak English and Portuguese. On board service was good.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

Some crew were unfriendly or in some cases just straight up rude.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

United Airline crews were very friendly and very attentive. 12 hours flight was gone like in a shorter one.

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

Food was surprisingly delicious. Space in the seat is horrible when the seating front is reclined. Movie offerings were terrible. Crew was friendly and helpful.

Flight left early and arrived 30 MINUTES early at the destination. Smooth trip.

Flight was 3 hours delayed. They gave our plan to two other routes. Need to knock that off.

The flight was on time and the landing was very smooth. The crew and flight attendants were all very friendly and professional.

Plane was super cold. No entertainment unless you were with mileage program Getting off the plane was super slow

I appreciate that I finally got the seat I paid extra for this time. Thank you

Half of the TSA checkpoints at PHL are closed. Also, there is no standby for first class passengers. You can only standby for coach. Very dated policy and inconsistent with peers.

It would have been nice if American tried to care.

Delayed initially because they couldn’t print the flight details. Poor instruction on delay. When I got on the plane the flight attendant argued with me about whether my carry on would fit (it did, although she didn’t acknowledge that). No greeting (other than arguing with me) getting on or off the plane.

Beverage service was not good. Also just one service in 5 hr 30 min flight. No ask fir water ir anything beside one time beverage service.

They are always late and seats was also not having working charger

shittiest airline in the hemisphere. To improve - start thinking you're flying people, not cattle

Easy boarding, inflight refreshments came on time and comfortable seat

It was good that our flight left early. It was a nice smooth flight and landing.

All good……but luggage didn’t make it on the airplane. Had to wait 3 days. Was a bummer.

Small suitcase used for carryon the last time was refused by boarding crew this time. Appears to be at the discretion and mood of the person on the day. Flight was only half booked, there would have been no problem with space.

It was a problem because there was a delay where we sat before taking off from newark,then when landed in Toronto we sat on tarmac and they wouldn't let us out for a long period of time. When we finally were released to the airport in Toronto the attendant scanned our boarding pass that we were here for our connection to Brazil. We ran all the way to the gate and they said at the gate the door is shut so we can not let you on the plane. We explained that we were checked in by the attendant when we arrived at Toronto airport to go to Brazil and they should not have shut the door. We were ignored at the gate

Flight home was delayed multiple times, did not get home until 2am

the check-in lady at ORD was extremely rude and unprofessional. very disappointed as it was supposed to be a celebration for my wife's birthday and it really put a damper on things. if i wanted to be treated like trash, i would have flown Economy! (as opposed to business class)

My original flight was cancelled and then rebooked four hours later on a recovery flight, but I was checked in as stanby and had no seats so as a family of four we were concerned about not being seated altogether. Our flight then got delayed by another 1.5 hours and when seats were assigned at the gate, three of the four of us were together and we could get my wife closer, they offered no assistance.

I bought a ticket from Kayak. When I got to the airport, the was no ticket. I had to pay 5X to get to my destination. No response received from Kayak. I will NEVER use them again.

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

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