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Flights from Sofia to Philadelphia

What to know about flights from Sofia to Philadelphia?

The distance between Sofia and Philadelphia is approximately 7,728.8 km. Based on Trip.com's data, travel demand peaks in July.

Cheapest one-way
$547
British Airways British Airways SOF-PHL 30h · 1 stop Mon, Nov 2
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Cheapest round-trip
$873
United Airlines United Airlines SOF-PHL 16h 40m · 2 stops Thu, Oct 29 - Thu, Nov 5
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Recommended airlines
British Airways British Airways Cheapest · From $547 Bulgaria Air Bulgaria Air Most booked
When to travel
November
Cheapest
July
Peak season for travel
Route details
7,728.8 km
Flight distance

Explore the cheapest one-way and round-trip flights from Sofia to Philadelphia over the next 90 days, with one-way fares from $547 and round-trip from $873. Based on Trip.com's latest 7-day flight data.

      • SOF 6:25 AM
        16h 40m
        1 stop
        PHL 5:05 PM
        Sofia - Philadelphia | Thu, Oct 29 | United Airlines
        PHL 5:40 PM
        12h 45m
        1 stop
        SOF 1:25 PM
        Philadelphia - Sofia | Thu, Nov 5 | United Airlines
        $873 $1,202
        27% off
        27% off
        $1,202 $873
      • SOF 6:25 AM
        16h 40m
        1 stop
        PHL 4:05 PM
        Sofia - Philadelphia | Thu, Nov 26 | United Airlines
        PHL 5:40 PM
        12h 45m
        1 stop
        SOF 1:25 PM
        Philadelphia - Sofia | Thu, Dec 3 | United Airlines
        $873 $1,202
        27% off
        27% off
        $1,202 $873
      • SOF 6:25 AM
        16h 40m
        1 stop
        PHL 4:05 PM
        Sofia - Philadelphia | Thu, Nov 5 | United Airlines
        PHL 5:40 PM
        12h 45m
        1 stop
        SOF 1:25 PM
        Philadelphia - Sofia | Thu, Nov 12 | United Airlines
        $874 $1,202
        27% off
        27% off
        $1,202 $874
      • SOF 6:25 AM
        16h 40m
        1 stop
        PHL 5:05 PM
        Sofia - Philadelphia | Thu, Oct 29 | Lufthansa
        PHL 5:40 PM
        12h 45m
        1 stop
        SOF 1:25 PM
        Philadelphia - Sofia | Thu, Nov 5 | United Airlines
        $874
        27% off
        $1,202 $874
      • SOF 6:25 AM
        16h 40m
        1 stop
        PHL 4:05 PM
        Sofia - Philadelphia | Thu, Nov 5 | Lufthansa
        PHL 5:40 PM
        12h 45m
        1 stop
        SOF 1:25 PM
        Philadelphia - Sofia | Thu, Nov 12 | United Airlines
        $874
        27% off
        $1,202 $874
      • SOF 6:25 AM
        16h 40m
        1 stop
        PHL 4:05 PM
        Sofia - Philadelphia | Thu, Nov 19 | United Airlines
        PHL 5:40 PM
        12h 45m
        1 stop
        SOF 1:25 PM
        Philadelphia - Sofia | Thu, Nov 26 | United Airlines
        $875
        27% off
        $1,202 $875
      • SOF 6:25 AM
        16h 40m
        1 stop
        PHL 4:05 PM
        Sofia - Philadelphia | Thu, Nov 19 | Lufthansa
        PHL 5:40 PM
        12h 45m
        1 stop
        SOF 1:25 PM
        Philadelphia - Sofia | Thu, Nov 26 | United Airlines
        $875
        27% off
        $1,202 $875
      • SOF 6:25 AM
        16h 40m
        1 stop
        PHL 5:05 PM
        Sofia - Philadelphia | Sun, Oct 25 | Lufthansa
        PHL 5:40 PM
        12h 45m
        1 stop
        SOF 1:25 PM
        Philadelphia - Sofia | Sun, Nov 1 | United Airlines
        $878
        27% off
        $1,202 $878
      • SOF 6:30 AM
        16h 35m
        1 stop
        PHL 4:05 PM
        Sofia - Philadelphia | Thu, Oct 15 | Lufthansa
        PHL 5:40 PM
        17h 25m
        1 stop
        SOF 6:05 PM
        Philadelphia - Sofia | Wed, Oct 21 | Lufthansa
        $883
        27% off
        $1,202 $883
      • SOF 6:30 AM
        16h 35m
        1 stop
        PHL 4:05 PM
        Sofia - Philadelphia | Thu, Oct 15 | United Airlines
        PHL 5:40 PM
        12h 45m
        1 stop
        SOF 1:25 PM
        Philadelphia - Sofia | Wed, Oct 21 | United Airlines
        $889
        26% off
        $1,202 $889
      • SOF 1:00 PM
        17h 25m
        1 stop
        PHL 2:00 PM
        Sofia - Philadelphia | Fri, Oct 16 | Normal Airline
        PHL 3:00 PM
        6h
        Nonstop
        SOF 4:00 PM
        Philadelphia - Sofia | Sun, Oct 18 | Normal Airline
        Find more flights
        Find more flights
      • SOF 5:15 PM
        30h
        1 stop
        PHL 4:15 PM
        Sofia - Philadelphia | Mon, Nov 2 | British Airways
        $547 $1,160
        53% off
        53% off
        $1,160 $547
      • SOF 9:05 PM
        26h 10m
        1 stop
        PHL 4:15 PM
        Sofia - Philadelphia | Wed, Nov 11 | British Airways
        $547 $1,160
        53% off
        53% off
        $1,160 $547
      • SOF 8:30 PM
        26h 45m
        1 stop
        PHL 4:15 PM
        Sofia - Philadelphia | Fri, Nov 20 | British Airways
        $558 $1,160
        52% off
        52% off
        $1,160 $558
      • SOF 9:05 PM
        26h 10m
        1 stop
        PHL 4:15 PM
        Sofia - Philadelphia | Wed, Dec 2 | British Airways
        $562
        52% off
        $1,160 $562
      • SOF 7:05 AM
        14h 35m
        1 stop
        PHL 2:40 PM
        Sofia - Philadelphia | Tue, Nov 17 | Bulgaria Air
        $698
        40% off
        $1,160 $698
      • SOF 7:00 AM
        15h 25m
        1 stop
        PHL 3:25 PM
        Sofia - Philadelphia | Sat, Nov 28 | Bulgaria Air
        $751
        35% off
        $1,160 $751
      • SOF 7:05 AM
        14h 35m
        1 stop
        PHL 2:40 PM
        Sofia - Philadelphia | Tue, Nov 17 | ITA Airways
        $805
        31% off
        $1,160 $805
      • SOF 7:00 AM
        15h 25m
        1 stop
        PHL 3:25 PM
        Sofia - Philadelphia | Mon, Nov 2 | Bulgaria Air
        $838
        28% off
        $1,160 $838
      • SOF 6:25 AM
        16h 40m
        1 stop
        PHL 4:05 PM
        Sofia - Philadelphia | Tue, Nov 24 | United Airlines
        $857
        26% off
        $1,160 $857
      • SOF 7:10 AM
        16h
        1 stop
        PHL 4:10 PM
        Sofia - Philadelphia | Thu, Dec 3 | Bulgaria Air
        $858
        26% off
        $1,160 $858
      • SOF 1:00 PM
        17h 25m
        1 stop
        PHL 2:00 PM
        Sofia - Philadelphia | Fri, Oct 16 | Normal Airline
        Find more flights
        Find more flights

Which airlines are the most popular for Sofia to Philadelphia flights?

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

Frequently Asked Questions

  • What are the cheapest flights from Sofia to Philadelphia (SOF-PHL)?

    Based on Trip.com data, British Airways offers one-way fares as low as $547 on Cheapest nonstop routes (e.g. SOF to PHL on Mon, Nov 2), while United Airlines offers Cheapest nonstop round-trips from $873 departing on Thu, Oct 29 and returning on Thu, Nov 5.
  • At the moment, several airlines serve connecting flights from Sofia to Philadelphia, including: Bulgaria Air 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 Sofia 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 Sofia 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 Mon, Nov 2, with one-way flights priced at just $547.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is British Airways.
    · 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 Sofia to Philadelphia is November, when demand for travel is lower.
  • After crunching the numbers on our October flight calendar, it's currently cheapest to fly from Sofia to Philadelphia on October 22, 2026 with United Airlines, with prices starting at $858.
  • You can arrive at any of the following airports in Philadelphia: Philadelphia International Airport (PHL), and Trenton Mercer Airport (TTN). Flights from Sofia Airport to Philadelphia International Airport (SOF-PHL) are by far the most popular option for this route.
  • The time difference between Philadelphia and Sofia is 7h.
  • 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 Sofia to Philadelphia is $865. Fares vary by travel date, airline and availability.
  • Enter Sofia 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.

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

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
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.
Cancellation/change due to a flight schedule change:
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.