$406 Find Cheap Flights from Philadelphia to South Korea

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 South Korea departing on 11/13. 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.
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1 adult, Economy

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Cheap Flights from Philadelphia to South Korea

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Seoul
Incheon2 stops$775
Busan
Busan2 stops$1,240
Seoul
Incheon2 stops$775
Busan
Busan2 stops$1,240

Book Cheap Philadelphia to South Korea Plane Tickets

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

Wed, Nov 12 - Thu, Nov 20
Air Canada Logo
3:30 pm - 5:10 pmPHL-ICN
35h 40m2 stops
Air Canada Logo
6:55 pm - 2:47 pmICN-PHL
33h 52m2 stops
$775Air Canada
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Tue, Nov 4 - Tue, Nov 18
Air Canada Logo
3:30 pm - 5:10 pmPHL-ICN
35h 40m2 stops
Air Canada Logo
6:55 pm - 2:47 pmICN-PHL
33h 52m2 stops
$779Air Canada
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Wed, Feb 11 - Wed, Feb 18
Delta Logo
1:30 pm - 5:45 amPHL-ICN
26h 15m1 stop
Delta Logo
7:30 pm - 11:46 pmICN-PHL
18h 16m1 stop
$866Delta
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Sat, Nov 15 - Tue, Dec 9
Delta Logo
6:00 am - 4:50 pmPHL-ICN
20h 50m1 stop
Delta Logo
6:00 pm - 9:40 pmICN-PHL
17h 40m1 stop
$867Delta
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Tue, Feb 17 - Fri, Feb 20
American Airlines Logo
6:23 am - 4:45 pmPHL-ICN
20h 22m1 stop
American Airlines Logo
6:50 pm - 10:54 pmICN-PHL
18h 04m1 stop
$874American Airlines
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Tue, Feb 10 - Fri, Feb 20
American Airlines Logo
8:07 pm - 4:45 pmPHL-ICN
30h 38m1 stop
American Airlines Logo
6:50 pm - 4:15 amICN-PHL
23h 25m2 stops
$880American Airlines
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Sat, Feb 7 - Fri, Feb 20
United Airlines Logo
8:35 am - 5:40 amPHL-ICN
31h 05m1 stop
United Airlines Logo
6:00 pm - 7:15 amICN-PHL
27h 15m1 stop
$884United Airlines
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Fri, Feb 13 - Mon, Feb 23
United Airlines Logo
12:55 pm - 5:40 amPHL-ICN
26h 45m2 stops
United Airlines Logo
12:45 pm - 7:04 pmICN-PHL
20h 19m2 stops
$889United Airlines
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Wed, Dec 17 - Mon, Dec 29
Korean Air Logo
6:15 am - 8:45 pmPHL-PUS
24h 30m2 stops
Korean Air Logo
12:00 pm - 10:50 pmPUS-PHL
24h 50m2 stops
$2,811Korean Air
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Thu, Dec 18 - Wed, Dec 31
Korean Air Logo
7:05 am - 8:45 pmPHL-PUS
23h 40m2 stops
Korean Air Logo
10:25 am - 10:11 pmPUS-PHL
25h 46m2 stops
$2,848Korean Air
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Booking Insights

KAYAK's insights & trends for Philadelphia to South Korea flights

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

What is the cheapest month to fly from Philadelphia to South Korea?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Philadelphia to South Korea, 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 South Korea is March, when tickets cost $889 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of round-trip tickets is $1,435 and $1,265 respectively.

What’s the cheapest day of the week to fly from Philadelphia to South Korea?

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

If your flying dates are flexible, you should consider flying to South Korea 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 South Korea. For your return ticket, we recommend flying on a Tuesday and avoiding Sundays for the best deals.

How far in advance should I book a flight from Philadelphia to South Korea?

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 South Korea, 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 South Korea, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$406
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly with an average 5% increase in price.
Flight from Philadelphia to Seoul Incheon Airport

FAQs - booking South Korea flights

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

    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 South Korea.

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

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

    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 from Philadelphia to South Korea 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 from Philadelphia to South Korea?

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

  • What is the cheapest time of day to fly to South Korea?

    The cheapest time of day to fly to South Korea is generally in the morning, when round-trip flights cost $1,187 on average. On average, there is no price difference when choosing to fly in the morning or the evening on this flight route. The most expensive time of day to fly to South Korea is generally at night, which is peak travel time and where the average cost of a ticket is $1,412.

Reviews of the top 5 airlines serving from Philadelphia to South Korea

 
Need help choosing which airline to fly with from Philadelphia to South Korea? 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 1148 reviews
8.5Boarding
8.2Entertainment
8.1Food
8.3Comfort
8.7Crew
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

The flight was great. The gate location was way to far away!!!

The flight attendant in first class was beyond rude and didn't care at all about her job. AND the gate agent was even worse than the flight attendant for rudeness. She was awful.

Gate agent rushed to fill hot jetway with crowd so it took over 12 minutes to go from gate to plane. Just like a discount airline Pooly prepared cabin and third time that claim of rough air prevented any cabin service. Friends on a Southwest flight at similar time had service.

Cramped seating for me. Luckily it wasn’t a long flight

Lounge in Lagos is terrible, food on board from Lagos to Atlanta was horrible. Only bright spot the cabin crew were awesome.

The airport was reasonably clean. The boarding process reasonably efficient. The cabin crew was efficient, polite but not that friendly. The food quality was unremarkable and the choices were awful . There was either a so so chicken dish or a “ vegetarian “ option which was really cheap carbohydrates drowned in cheese. Signing onto i flight wifi was not straightforward. Overall it was a very average experience

The staff and the boarding procedure were all amazing . The one flight was not equipped with WIFI which now adays seems odd. All in all the experience was good

Passengers need to check in big baggage instead of bringing on the plane. That cause inconvenience for everyone. Otherwise flight was good.

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.

Food was poorly timed and not good.. Hand held snacks, really. I kept asking for water and never got any. Service was rushed for a 7-hour flight.

Boarding was organized. Old plane. Seat fairly comfortable. Business Class much too large so you don’t receive as much attention as you should considering what you pay for the seat.

Boarding was organized. Plane seats comfortable and service was attentive. Food options were good.

This was a very average flight. The seat was out of alignment so more uncomfortable than usual. The cabin felt not well maintained. But I safely got where I needed to go.

Trip was great. A wild landing in Ottawa with the wind and rain, but the pilot did a great job. Always love flying United.👍

I will never book a flight through Cheap fare. They booked me from Portland Main . And would not give me a refund, so I bought 2 tickets one for 299. From Portland Main to ORD. Then I had to buy a ticket from Oregon PDX to ORD that was another 440. So Just so you know they even told me it was there fault but no refund. Bad bussniess. I did inform United but they said they couldn't help me due to the fact I booked through Cheap Tickets. Never again. And I'm spreding the word. I let everyone know at my 50th class reunion

We were in business class. the angled seats in that class do not have a real window view & the placement of the controls are bad. But we knew that. But the food options were mediocre. The taste was fine, but the size was for a child. It’s just really feels like United is skimping on everything. Even when we were in the Polaris lounge they did not have diet sodas. They said they were out no Coke zero no Diet Coke, etc. I do not think the portion of nuts they serve on the plane could get any smaller. Really a minimal service and offer for what you’re paying for in business.

The internet service I paid for didn’t work at all and the flight crew was not very friendly.

Excellent experience. Starting with the agent at the Premier bag drop who noticed I was very early for my scheduled flight and offered to rebook me on an earlier flight with my seat preference. She would not let me leave the counter until she knew that all of the changes and new boarding pass showed up on my United app. At the gate, the flight boarded quickly such that we departed early and the flight was smooth. We arrived 20 minutes early at ORD and I was able to be home in time for dinner. One of the best flights I've had.

The flight attendants were rude. Seemed like they didn’t want to be there. Except for one girl that was really nice. Seats are sooooo uncomfortable. They give you a piece of paper and a thin cushion for a pillow and blanket that does nothing. Airlines have gone way downhill, especially United international flights. Food was disguting. Definitely flying ANA next time.

The Phildalphia to Allentown portion was a BUS, not a plane. All was as expected.

Excellent - explanations were clear staff was nice and flight was comfortable

Airport in MXP is crazy. Get there at least 2 hours before flight.

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.

Almost everything it was a “cool” ambiance but we arrived to Toronto so that it’s ok for me

The crew was really nice. The plane seats were kinda small even for a 5’6” / 158 lbs person.

Fare was great, seat comfort the opposite as cushion was worn out. Ok for 2 hour flight, not for 4.5 hour flight..

Check in agent was very helpful and polite. He helped me board the earlier flight back home instead of waiting 2 hours at the airport for the next flight

Fair. What's the point of partnering with United if we cannot use the lounge. My wife is a frequent flier with United but we were refused access to Air Canada lounge

extremely cramped seating... absolutely no leg room and when person in front of me reclined... I was pinned in my seat... absolutely ridiculous

Didn’t realize I purchased a basic fare with no carry ons allowed. Not very well communicated. Also had seats switched without knowledge and had to pay for different ones.

We loved our Air Canada experience and will definitely fly them again. It just so happened than in the first leg of our trip their entertainment system was not working, and neither was their oven so cold meal & snacks only.

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.

Everything you need to know for your flight from Philadelphia to South Korea

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