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Flights from Seoul to Philadelphia

Cheapest airlines flights from Seoul to Philadelphia

Fly from Seoul to Philadelphia with 3 carriers, including Korean Air, Hawaiian Airlines, and Delta Air Lines. Hawaiian Airlines offers the cheapest flights from Seoul to Philadelphia.
Korean Air logo Korean Air Hawaiian Airlines logo Hawaiian Airlines Delta Air Lines logo Delta Air Lines

Find Seoul to Philadelphia flight deals for the next 3 months. One way flights from US$426, round trip flights from US$505.

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Seoul to Philadelphia Flight Information

The distance between Seoul and Philadelphia is approximately 11,116.32 km. The most popular month to fly to Philadelphia is July. The off-season for travel is September.

Cheapest one-way flight priceUS$426
Cheapest return ticket priceUS$505
Cheapest monthSeptember
Peak season for travelJuly
Flight distance11,116.32 km
Popular airlineKorean Air

When is the cheapest time to book flights from Seoul to Philadelphia?

Best time for cheap flights from Seoul to Philadelphia are between Nov 16 and Nov 23 with one way fares from US$376

Cheapest flights
From price
Search
  • 916
  • 1623
  • 2330

  • Dec

    307
  • 714
  • 1421
  • 2128

  • Jan

    284
  • 411
  • 1118
  • 1825

  • Feb

    251
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • Which airlines offer flights from Seoul to Philadelphia?

    At the moment, several airlines serve connecting flights from Seoul to Philadelphia, including: Korean Air Hawaiian Airlines Delta Air Lines Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Seoul to Philadelphia is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • The cheapest months to fly from Seoul to Philadelphia is September, when demand for travel is lower.
  • After crunching the numbers on our November flight calendar, it's currently cheapest to fly from Seoul to Philadelphia on November 26, 2025 with American Airlines, with prices starting at US$474.
  • You can land at any one of the following hubs in Philadelphia, with Incheon International Airport to Philadelphia International Airport (ICN-PHL) is by far the most common option on this route: Philadelphia International Airport (PHL) Trenton Mercer Airport (TTN).
  • The time difference between Philadelphia and Seoul is 14h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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