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Flights from Seoul to Philadelphia

Seoul to Philadelphia Flight Information

The approximate distance between Seoul and Philadelphia is 11,116.32 km. According to Trip.com data, travel demand hits its peak in July. The cheapest month to book flights is September.

Cheapest one-way
US$562
Air Canada Air Canada SEL-PHL 16h 32m · 1 stop Fri, Oct 2
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Cheapest round-trip
US$903
Delta Air Lines Delta Air Lines SEL-PHL 35h 22m · 2 stops Fri, Sep 11 - Mon, Sep 14
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Recommended airlines
Air Canada Air Canada Cheapest · From US$562 Asiana Airlines Asiana Airlines Most booked
When to fly
April
Cheapest
July
Peak season
Route details
11,116.32 km
Flight distance

Search cheap flights from Seoul to Philadelphia in the next 3 months. Based on Trip.com's latest 7-day data, one-way fares start at US$562, and round-trip tickets start at US$903.

      • ICN 19:20
        35h 22m
        1 stop
        PHL 17:42
        Seoul - Philadelphia | Fri, Sep 11 | Delta Air Lines
        PHL 07:05
        20h 45m
        1 stop
        ICN 16:50
        Philadelphia - Seoul | Mon, Sep 14 | Delta Air Lines
        US$903 US$1,203
        25% off
        25% off
        US$1,203 US$903
      • ICN 19:40
        28h 9m
        1 stop
        PHL 10:49
        Seoul - Philadelphia | Fri, Oct 16 | Delta Air Lines
        PHL 11:49
        40h 31m
        1 stop
        ICN 17:20
        Philadelphia - Seoul | Thu, Oct 22 | Delta Air Lines
        US$908 US$1,203
        25% off
        25% off
        US$1,203 US$908
      • ICN 19:40
        35h 41m
        1 stop
        PHL 18:21
        Seoul - Philadelphia | Tue, Oct 6 | Delta Air Lines
        PHL 11:49
        40h 31m
        1 stop
        ICN 17:20
        Philadelphia - Seoul | Tue, Oct 13 | Delta Air Lines
        US$908 US$1,203
        25% off
        25% off
        US$1,203 US$908
      • ICN 11:30
        19h
        1 stop
        PHL 17:30
        Seoul - Philadelphia | Fri, Sep 11 | United Airlines
        PHL 18:36
        20h 44m
        1 stop
        ICN 04:20
        Philadelphia - Seoul | Tue, Sep 15 | United Airlines
        US$937
        22% off
        US$1,203 US$937
      • ICN 19:00
        23h 50m
        1 stop
        PHL 05:50
        Seoul - Philadelphia | Sat, Sep 12 | Delta Air Lines
        PHL 05:45
        22h 35m
        1 stop
        ICN 17:20
        Philadelphia - Seoul | Wed, Sep 16 | Delta Air Lines
        US$943
        22% off
        US$1,203 US$943
      • ICN 19:20
        35h 22m
        1 stop
        PHL 17:42
        Seoul - Philadelphia | Thu, Sep 10 | Delta Air Lines
        PHL 18:52
        31h 28m
        1 stop
        ICN 15:20
        Philadelphia - Seoul | Mon, Sep 14 | Delta Air Lines
        US$945
        21% off
        US$1,203 US$945
      • ICN 19:40
        31h 30m
        1 stop
        PHL 14:10
        Seoul - Philadelphia | Tue, Oct 13 | Delta Air Lines
        PHL 07:00
        20h 50m
        1 stop
        ICN 16:50
        Philadelphia - Seoul | Sat, Oct 17 | Delta Air Lines
        US$955
        21% off
        US$1,203 US$955
      • ICN 11:30
        18h 51m
        1 stop
        PHL 17:21
        Seoul - Philadelphia | Fri, Oct 16 | United Airlines
        PHL 18:34
        31h 26m
        1 stop
        ICN 15:00
        Philadelphia - Seoul | Thu, Oct 22 | United Airlines
        US$959
        20% off
        US$1,203 US$959
      • ICN 19:20
        23h 45m
        1 stop
        PHL 06:05
        Seoul - Philadelphia | Mon, Sep 28 | Delta Air Lines
        PHL 07:20
        19h
        1 stop
        ICN 15:20
        Philadelphia - Seoul | Wed, Sep 30 | Delta Air Lines
        US$961
        20% off
        US$1,203 US$961
      • ICN 19:00
        23h 50m
        1 stop
        PHL 05:50
        Seoul - Philadelphia | Sun, Sep 13 | Delta Air Lines
        PHL 07:05
        20h 45m
        1 stop
        ICN 16:50
        Philadelphia - Seoul | Wed, Sep 16 | Delta Air Lines
        US$962
        20% off
        US$1,203 US$962
      • SEL 13:00
        17h 25m
        1 stop
        PHL 14:00
        Seoul - Philadelphia | Fri, Aug 21 | Normal Airline
        PHL 15:00
        6h
        Nonstop
        SEL 16:00
        Philadelphia - Seoul | Sun, Aug 23 | Normal Airline
        More cheap flights
        More cheap flights
      • ICN 18:00
        16h 32m
        1 stop
        PHL 21:32
        Seoul - Philadelphia | Fri, Oct 2 | Air Canada
        US$562 US$715
        21% off
        21% off
        US$715 US$562
      • ICN 18:00
        16h 32m
        1 stop
        PHL 21:32
        Seoul - Philadelphia | Sun, Sep 13 | Air Canada
        US$567 US$715
        21% off
        21% off
        US$715 US$567
      • ICN 19:05
        16h 41m
        1 stop
        PHL 22:46
        Seoul - Philadelphia | Thu, Oct 1 | Air Canada
        US$567 US$715
        21% off
        21% off
        US$715 US$567
      • ICN 18:00
        16h 32m
        1 stop
        PHL 21:32
        Seoul - Philadelphia | Sun, Oct 4 | Air Canada
        US$567
        21% off
        US$715 US$567
      • ICN 19:05
        33h 36m
        1 stop
        PHL 15:41
        Seoul - Philadelphia | Sat, Oct 17 | Air Canada
        US$572
        20% off
        US$715 US$572
      • ICN 19:05
        16h 41m
        1 stop
        PHL 22:46
        Seoul - Philadelphia | Fri, Oct 16 | Air Canada
        US$572
        20% off
        US$715 US$572
      • ICN 19:05
        16h 41m
        1 stop
        PHL 22:46
        Seoul - Philadelphia | Thu, Oct 15 | Air Canada
        US$572
        20% off
        US$715 US$572
      • ICN 19:05
        28h 6m
        1 stop
        PHL 10:11
        Seoul - Philadelphia | Sat, Sep 19 | Air Canada
        US$572
        20% off
        US$715 US$572
      • ICN 19:05
        16h 41m
        1 stop
        PHL 22:46
        Seoul - Philadelphia | Thu, Oct 8 | Air Canada
        US$572
        20% off
        US$715 US$572
      • ICN 19:05
        16h 41m
        1 stop
        PHL 22:46
        Seoul - Philadelphia | Wed, Oct 7 | Air Canada
        US$572
        20% off
        US$715 US$572
      • SEL 13:00
        17h 25m
        1 stop
        PHL 14:00
        Seoul - Philadelphia | Fri, Aug 21 | Normal Airline
        More cheap flights
        More cheap flights

Popular airlines flying from Seoul to Philadelphia

You can choose from 1 airlines that fly from Seoul to Philadelphia, including Asiana Airlines, Air Canada has lowest fares on this route.
Asiana Airlines logo Asiana Airlines
Airlines are determined based on actual purchased flight tickets from Seoul to Philadelphia according to previous 12 months data from Trip.com.

Trip.com Price Trends on Flights from Seoul to Philadelphia

Which month has the cheapest one-way flights from Seoul to Philadelphia?

Average monthly one-way flight prices from Seoul to Philadelphia, based on bookings made by Trip.com users over the past 12 months.

Based on Trip.com’s data, the cheapest month for flights from Seoul to Philadelphia is April, with an average price of US$407; while the month with the highest flight price is usually July, with an average price of up to US$1,218.

US$1,218
US$813
US$407
US$2
    Cheapest
  • US$645
    Aug
  • US$554
    Sep
  • US$634
    Oct
  • US$590
    Nov
  • US$585
    Dec
  • US$886
    Jan
  • US$606
    Feb
  • US$865
    Mar
  • US$407
    Apr
  • US$819
    May
  • US$714
    Jun
  • US$1,218
    Jul

Frequently Asked Questions

  • What are the cheapest flights from Seoul to Philadelphia (SEL-PHL)?

    Based on Trip.com data, Air Canada offers one-way fares as low as US$562 on Cheapest nonstop routes (e.g. ICN to PHL on Fri, Oct 2), while Delta Air Lines offers Cheapest nonstop round-trips from US$903 departing on Fri, Sep 11 and returning on Mon, Sep 14.
  • At the moment, several airlines serve connecting flights from Seoul to Philadelphia, including: Asiana Airlines 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.
  • To find best deals on flights from Seoul to Philadelphia, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Fri, Oct 2, with one-way flights priced at just US$562.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Air Canada.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Philadelphia travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Seoul to Philadelphia is September, when demand for travel is lower.
  • After crunching the numbers on our August flight calendar, it's currently cheapest to fly from Seoul to Philadelphia on August 26, 2026 with Air Premia, with prices starting at US$833.
  • 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.
  • Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Seoul to Philadelphia is US$1,106. Fares vary by travel date, airline and availability.
  • Enter Seoul and Philadelphia, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.

Trip.com Airline Insights on Flights from Seoul to Philadelphia

Which airline offers the cheapest direct flights from Seoul to Philadelphia?

Data is based on the average price of all nonstop flights from Seoul to Philadelphia on Trip.com over the past 12 months.

Based on Trip.com’s data from the past 12 months, American Airlines provides the lowest-priced direct flights from Seoul to Philadelphia, with fares starting at US$577.

US$404
US$577
US$751
US$925
US$1,098
American Airlines
US$577
American Airlines
United Airlines
US$594
United Airlines
Delta Air Lines
US$818
Delta Air Lines
Air Canada
US$829
Air Canada
Asiana Airlines
US$939
Asiana Airlines
Korean Air
US$1,098
Korean Air

Explore More Popular Flights

Note: Prices shown on this page are the estimated lowest prices found in the last 24 hours and include all taxes and fees.

Book with no extra fees

Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are clearly shown before you pay. Charges for checked baggage, onboard meals, Wi‑Fi, and other optional services are also included where applicable in the flight cards.

Real-time pricing updates

Prices, availability, and travel details on this page have been updated within the last 24 hours, and for many routes are refreshed in real time. The more popular the route, the more accurate and up-to-date the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.