ICN - PHL

$438 Find Cheap Flights from Seoul Incheon Airport 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 from Incheon Intl to Philadelphia departing on 11/20. 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 in flight searches from Incheon to Philadelphia, 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 Incheon to Philadelphia, as well as popular online travel agencies
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Flight Deals

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

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

Fri, Feb 20 - Mon, Mar 2
American Airlines Logo
6:50 pm - 2:27 pmICN-PHL
33h 37m1 stop
American Airlines Logo
3:35 pm - 4:45 pmPHL-ICN
35h 10m2 stops
$491American Airlines
Find Deal
Fri, Feb 20 - Mon, Mar 2
American Airlines Logo
6:50 pm - 9:35 amICN-PHL
28h 45m1 stop
American Airlines Logo
3:35 pm - 4:45 pmPHL-ICN
35h 10m2 stops
$492American Airlines
Find Deal
Tue, Mar 17 - Sun, Mar 22
American Airlines Logo
5:55 pm - 11:55 amICN-PHL
31h 00m2 stops
American Airlines Logo
9:05 pm - 3:55 pmPHL-ICN
29h 50m2 stops
$501American Airlines
Find Deal
Fri, Jan 30 - Sun, Feb 8
United Airlines Logo
12:45 pm - 9:52 pmICN-PHL
23h 07m1 stop
United Airlines Logo
5:00 pm - 4:15 pmPHL-ICN
33h 15m2 stops
$519United Airlines
Find Deal
Fri, Jan 30 - Sun, Feb 8
United Airlines Logo
12:45 pm - 9:52 pmICN-PHL
23h 07m1 stop
United Airlines Logo
1:10 pm - 4:15 pmPHL-ICN
37h 05m2 stops
$520United Airlines
Find Deal
Fri, Dec 26 - Sat, Jan 10
Delta Logo
7:40 pm - 5:50 amICN-PHL
24h 10m1 stop
Delta Logo
5:17 pm - 4:30 pmPHL-ICN
33h 13m2 stops
$620Delta
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Tue, Mar 17 - Wed, Mar 25
Delta Logo
8:05 pm - 11:50 amICN-PHL
28h 45m2 stops
Delta Logo
6:00 am - 4:30 pmPHL-ICN
21h 30m2 stops
$623Delta
Find Deal
Sun, Mar 15 - Wed, Mar 25
Hawaiian Airlines Logo
8:35 pm - 5:31 pmICN-PHL
33h 56m1 stop
Hawaiian Airlines Logo
7:00 am - 6:35 pmPHL-ICN
22h 35m1 stop
$641Hawaiian Airlines
Find Deal
Thu, Apr 9 - Mon, May 18
Korean Air Logo
8:45 am - 2:15 pmICN-PHL
18h 30m1 stop
Korean Air Logo
7:33 pm - 3:55 pmPHL-ICN
31h 22m1 stop
$715Korean Air
Find Deal
Wed, Mar 18 - Sat, Mar 21
Korean Air Logo
6:00 pm - 5:11 pmICN-PHL
36h 11m1 stop
Korean Air Logo
6:10 pm - 3:50 pmPHL-ICN
32h 40m1 stop
$718Korean Air
Find Deal

Everything you should know

Top airlines
American Airlines
Cheapest • from $491 (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 • 17% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$491
Overall average: $869
American Airlines
Fri 2/20Mon 3/2
ICN - PHL • 1 stop
Cheapest one-way
$438
Typical prices: $488-$522
Delta
Thu 11/20
ICN - PHL • 2 stops
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Booking Insights

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

Get data-powered insights and trends into flights from Incheon Intl to Philadelphia 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 Seoul Incheon Airport to Philadelphia?

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

When flying from Seoul Incheon Airport to Philadelphia, you should consider leaving on a Tuesday and avoid Sundays if you are looking for the best rates. For your return to Seoul Incheon Airport, you’ll find the best rates on Thursdays and the most expensive ones on Sundays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Incheon Intl Airport to Philadelphia, 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 Incheon Intl Airport to Philadelphia is March, where tickets cost $709 (return) on average. On the other hand, the most expensive months are August and January, where the average cost of round-trip tickets is $1,112 and $1,012 respectively.

Good to know

Low seasonMarch
Cheapest flight$438
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 9% increase in price.
Flight from Seoul Incheon Airport to Philadelphia

When to book flights from Incheon Intl to Philadelphia

Are your dates flexible? Find out the best times to travel from Incheon Intl to Philadelphia 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 Seoul Incheon Airport to Philadelphia flights

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

    In the last 3 days, the lowest price for a flight from Incheon Intl Airport to Philadelphia was $438 for a one-way ticket and $491 for a round-trip.

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

    Yes, you'll most likely have to show a valid passport before boarding the plane in Seoul Incheon Airport and on arrival in Philadelphia.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Incheon to Philadelphia are Korean Air and Delta. With an average price for the route of $1,144 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 $886 and an overall rating of 7.9.

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Philadelphia from Seoul Incheon Airport 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 Seoul Incheon Airport 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 to Seoul Incheon Airport with another airline. Booking your flights between Seoul Incheon Airport and PHL 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 Seoul Incheon Airport 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 from Seoul Incheon Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Incheon Intl to Philadelphia

 
See real verified KAYAK customer reviews for airlines flying from Incheon to Philadelphia. 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 Incheon Intl 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.
8.4
Korean AirOverall score based on 1155 reviews
8.7Crew
8.5Boarding
8.3Comfort
8.2Entertainment
8.1Food
Airline reviews

It’s great, long flight and arrive safe at destination

10.0 ExcellentAye, Oct 2025ICN - MSP
Read more Korean Air reviews

It’s great, long flight and arrive safe at destination

Everything was excellent as I expected. They also had a very caring crew. I had a headache and asked a Tylenol. The crew members kept checking with me how I was doing.

They were trying to get people to check luggage because the over head compartments were full but when we boarded there were lots of empty places that people could have put the luggage.

I can't believe they put my wife and I in the two middle seats! It is a very long flight and we had single flyers on either side of us blocking the way to the bathroom! There's no reason to not give one of us the isle seat so we could have managed bathroom needs and snacks with convenience. So I think very poorly of Korean air to put us both in the middle, I've never had that happen before and will probably avoid this airline in the future because of this. We tried to have them change it but they didn't so you pretty much lost a customer because of it.

There could have been better spacing of the passengers, it was crowded in some parts of the plane then other while rows were empty

Plane took off on time and I had the whole row to myself!

One of the flight attendants stepped on my foot. I was on the aisle seat. A lady inside needed to get out. So Instood. Just then, a flight attentendant came wuicklybtheoughbthe aisle and stepprd on my sock covered toes. I let out a small sound. She stopped momentarily, but didn’t ask how I was just took off of the aisle. Never came back to see how I was. Fortunately, I was not really hurt other than a slight soreness in my toes. But I found that to be very negligent.

This flight was a superior flight in all regards. Extremely pleasant experience.

Korean Air is unlike any other major airline I have flown with. The grace and respect that the staff has from check in to de-boarding is unmatched. The flight attendants this time were especially wonderful to my five little children. They helped us rearrange to more suitable seating, brought our children’s meals, and patiently waited for them in the aisles when they had to use the bathroom. We felt so welcome and comfortable. I really appreciate the meal voucher when our flight was delayed. I am grateful to have had such an stress-free experience.

It's good overall. Flight was packed. Inflight entertainment choices were lacking.

DELTA does a terrific job making sure you are well taken care of during the flight, gives you assurance before the flight through numerous email notifications about your upcoming flight & lastly good follow up after the flight making sure your needs were mat. It has been, is & will continue to be my carrier of choice in all my future travels. Good Job DELTA

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

Seats comfortable, service and food very mediocre, staff not very attentive, worse than many other our flights with Delta.

Overall good experience; however, there was one flight attendant who was rather rough compared to everyone else. Everything else was good: entertainment, food. Delta keeps on delivering! Thank you!

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Crew blocked exits to front of ship with galley carts. Also split five person family apart on international flight without fixing.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

The free Wi-fi for Aeroplan members was a great touch. The time passed quickly. I found the seats seemed a little closer together than I remember. Not Air Canada's fault, but we were about 20 minutes late landing because the airport was too busy. We had to circle around for a while. The boarding and disembarking went very smoothly.

It was crazy, boarded over a hour late from scheduled departure. Then when arrived in BNA issued with getting off the plane…over 1/2 hour. Not looking forward to flying Air Canada, ever again.

Extremely turbulent landing. Crew was friendly and plane comfortable. Airport and US pre clearance was understaffed

The airplane is way too tight, you can hardly enter into your row to sit.. more like kids seats than adults.

taking our carryon and forcing us to check it through

Wifi was great. Kind air crew and comfortable seating. Also liked the entertainment options.

Great flight. Only complaint is it took over an hour for my luggage to get to the carousel on the return to LAX That was irritating

I knew I was going to fall asleep unsettlingly from exhaustion so I warned the guy next to me in advance. The attendant took to checking on me frequently and even insisted I take my snack because I said no while sleep hazed and then absolutely wanted it about 5 minutes later. He was So caring and kind to my situation!!

First message when all on board was that we didnt have a pilot, then they found one, then it was something about the bridge something not working, they will either fix or do manually. Flight of course was leaving late with all the cruise guests worrying about making it to their ship in time. Then only some luggage made it off the ship. Around 15 to 20 people waiting. 45 min later arrived except mine. I asked the rep at the luggage conveyor, he asked me my name. Then said it was not picked up with the first batch so they put it in a room. I was going to take public transport but now worried about time so took a taxi that cost me $65 USD

The flight was very smooth and good. Boarding was fast, but the staff was just decently friendly.

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