$427 Flights from Sofia (SOF) to Philadelphia (PHLA)

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Flight deals from Sofia to Philadelphia

Looking for a cheap last-minute deal or the best round-trip flight from Sofia Airport to Philadelphia? If you want to travel next month, round-trip fares start from $785. Find the lowest prices on one-way and round-trip tickets right here.

Find the cheapest month to fly from Sofia to Philadelphia from $427 one-way

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Sofia to Philadelphia flights are currently cheapest in September.

Sofia to Philadelphia: Flight information

The things to know before you go.
Cheapest flight found$427
Cheapest month to flySeptember

Finding cheap flights from Sofia to Philadelphia: Frequently asked questions

There are 6 airports in Philadelphia: Philadelphia International, Blue Bell, Philadelphia Trenton-Mercer, Greater Wilmington, Atlantic City International, and Allentown.
The best price we found for a round-trip flight from Sofia to Philadelphia is $734. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Sofia to Philadelphia. But we found flights with one or more stops from $734.
There are no flights flying from Sofia to Philadelphia, as of June 2026.
The cheapest month to fly from Sofia to Philadelphia is usually July.
If you're flying from Sofia Airport, the cheapest airport near Philadelphia is Philadelphia International – which is 7.0 miles away from the center of Philadelphia. We've found flights to this airport from $734.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Sofia Airport to Philadelphia on Sunday, July 12, 2026.
No airlines currently offer direct flights between Sofia Airport and Philadelphia. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Philadelphia but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Philadelphia is around 40 days in advance, so don’t leave your flight to the last minute.
In June, the average temperature is usually around 70°F. July is typically the warmest month in Philadelphia, when it usually averages around 85°F. You can expect the least rain in February. The coldest month is January, with temperatures averaging 22°F. The rainiest month is July.
Currently, Ryanair offers the cheapest flight tickets to Philadelphia.

Traveling from Sofia Airport (SOF) to Philadelphia: what you need to know

  • Sofia Airport is located in Sofia. Following the UTC-5 timezone, Philadelphia is seven hours behind Sofia.

  • Leave plenty of time to catch your SOF to Philadelphia flight. As a rule of thumb, arrive two hours before international departures and an hour ahead for domestic flights.

  • During popular months such as July, it's wise to get to the airport even earlier. Arrive two hours before a domestic departure and four hours ahead for international flights when you travel during peak periods in general.

  • We make it simple to book plane tickets from SOF to Philadelphia with a stopover. To see the options, deselect 'Direct flights only.' Then, select a flight that has a stop long enough to tour the city of your choice. Popular stopovers include:

    • Amsterdam Schiphol Airport (AMS)

    • Rome Leonardo da Vinci Fiumicino Airport (FCO)

    • Copenhagen Airport (CPH)

  • Traveling from central Sofia to SOF takes about 30 minutes on public transport. If you ride-share, drive or grab a cab, you'll cover the 4 miles in 25 minutes or so, depending on traffic.

  • Have an early flight from Sofia Airport to Philadelphia? Avoid the hassle of rushing to the airport (and catch some extra z's) by choosing one of these stays close to SOF:

  • 77% of flights that leave from Sofia Airport reach their destination on schedule.

How to find the cheapest flights from Sofia Airport (SOF) to Philadelphia

  • The best price we've seen for a one-way Sofia Airport to Philadelphia flight is $427. The cheapest price for a return flight is $734. Keep in mind fares may change due to demand at the time of booking.

  • To find cheap flights from SOF to Philadelphia, book as early as you can. Airlines typically offer lower prices when flights are first released.

  • Scoring cheap tickets from Sofia Airport to Philadelphia is more likely if you're flexible with your travel plans. Try using the 'Whole month' search function to get the best prices across the month and score an awesome deal.

  • You don't need to check back constantly to see if fares have dropped when you set up a Price Alert. We'll let you know as soon as there's an even bigger deal on cheap flights from SOF to Philadelphia.

  • Save money on your flight from Sofia Airport to Philadelphia with the help of our filters. Choose your ideal duration, number of stops and airlines, then sort the results by 'Cheapest' to see the best deals.

Airports in Philadelphia

Philadelphia International Airport (PHL)

  • Philadelphia International Airport (PHL) is around 11 miles from the center of Philadelphia. If you're getting a cab or a ride-share, the drive will take roughly 20 minutes.

  • It'll take around 30 minutes if you're traveling by public transport.

  • If you're coming in on a late flight from Sofia Airport to Philadelphia, nothing beats the convenience of staying close to the terminal. Pick up your bags from the carousel and then be showered and sleeping not long after at one of these accommodation options near PHL:

  • Lock in the best deal by reserving your vehicle from Philadelphia International Airport around three weeks in advance of your flight from SOF to Philadelphia.

  • The street address for PHL is 8500 Essington Ave.

Trenton-Mercer Airport (TTN)

  • The center of Philadelphia is located around 30 miles from Trenton-Mercer Airport (TTN). After your flight from Sofia Airport to Philadelphia has hit the runway and you've made your way to arrivals, expect a drive of around 40 minutes.

  • Traveling by public transport will take around 1 hour 35 minutes.

  • You'll find some comfortable places to drop your things at near TTN. Unwind and get cozy after your SOF to Philadelphia flight at any of these perfectly located options:

  • Secure your first choice, not your last resort. Securing your ride from TTN four weeks in advance often means lower prices and a wider range of vehicles.

  • Trenton-Mercer Airport can be found at Scotch Road, Terminal Building.

Best time to go to Philadelphia

  • July is the most popular month for flights from Sofia Airport to Philadelphia. To avoid the crowds, visit Philadelphia in December.

  • Lock in a Sofia Airport to Philadelphia plane ticket with a departure in July if you're eager to experience the city during its warmest month. Expect temperatures to range from 64ºF to 90ºF.

  • For cooler conditions, search for a cheap ticket from SOF to Philadelphia in January when temperatures average between 19ºF and 48ºF.

More about Philadelphia

Explore more of the United States

  • You've done Philadelphia, now it's time to explore other corners of the United States. Travel about 80 miles northeast to New York to tick off its leading attractions. From Central Park to Statue of Liberty and Metropolitan Museum of Art, you'll have a packed itinerary ahead.

  • Around 270 miles northeast of Philadelphia, Boston is another favorite stop in the United States. No visit is complete without checking out Museum of Fine Arts Boston, Freedom Trail and USS Constitution Museum.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.