HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Sofia

$227+ Cheap flights from Pennsylvania to Sofia (SOF)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SOF
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Pennsylvania to Sofia with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Pennsylvania to Sofia

Cheapest flights from Pennsylvania to Sofia
Explore the most affordable flight options available from Pennsylvania to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.

This KLM deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/116:50 pmJFK - SOF
1 stop12h 15mKLM
Mon 12/157:00 amSOF - JFK
1 stop35h 30mKLM
Deal found 12/3$430
This Kiwi.com deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/75:30 pmJFK - SOF
1 stop12h 30mLufthansa
Sun 12/146:05 amSOF - JFK
1 stop16h 35mLufthansa
Deal found 12/3$447
This Justfly.com deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/310:35 pmJFK - SOF
1 stop12h 15mLOT
Sun 12/76:35 pmSOF - JFK
1 stop33h 00mLOT
Deal found 12/3$461
This oojo deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/112:30 pmJFK - SOF
2 stops37h 45mBritish Airways
Mon 12/155:25 pmSOF - JFK
1 stop34h 40mBritish Airways
Deal found 12/3$465
This United Airlines deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/85:30 pmJFK - SOF
1 stop12h 45mUnited Airlines
Mon 12/151:45 pmSOF - JFK
1 stop32h 55mUnited Airlines
Deal found 12/3$472
This Kiwi.com deal was found by Cheapflights users on 12/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/65:30 pmJFK - SOF
1 stop12h 45mLufthansa
Sun 12/146:05 amSOF - JFK
1 stop16h 35mLufthansa
Deal found 12/4$477
This CrystalTravel deal was found by Cheapflights users on 12/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/64:25 pmJFK - SOF
1 stop10h 50mSWISS
Sun 12/1411:00 amSOF - JFK
1 stop12h 40mSWISS
Deal found 12/4$486
This United Airlines deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/289:45 amJFK - SOF
2 stops30h 00mUnited Airlines
Thu 2/57:55 amSOF - JFK
1 stop13h 20mUnited Airlines
Deal found 12/3$488
This United Airlines deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/289:45 amJFK - SOF
2 stops30h 00mUnited Airlines
Wed 2/46:05 amSOF - JFK
1 stop16h 35mUnited Airlines
Deal found 12/3$490
This Mytrip deal was found by Cheapflights users on 12/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/610:05 amJFK - SOF
2 stops17h 10mMultiple Airlines
Sun 12/1411:00 amSOF - JFK
1 stop33h 05mMultiple Airlines
Deal found 12/4$494
This Justfly.com deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/35:00 pmEWR - SOF
1 stop13h 15mMultiple Airlines
Sun 12/711:00 amSOF - EWR
1 stop16h 30mMultiple Airlines
Deal found 12/3$497
This KAYAK deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:05 pmEWR - SOF
2 stops57h 10mSWISS
Thu 12/114:00 pmSOF - EWR
1 stop28h 55mSWISS
Deal found 12/3$504

Find flight deals from Pennsylvania to Sofia

Keep the following information in mind while searching for Pennsylvania to Sofia flight deals. Data was last updated December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$352
(Kiwi.com)

One-way from

$227
(Trip.com)

Popular in

May

Cheapest in

October

Average price

$725
Provider with most accurate pricing for Philadelphia-Sofia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Sofia flights.
Search Deals
From Pennsylvania to Sofia
Search Deals
One-way flight from Pennsylvania to Sofia
Search Deals
Highest demand for flights based on searches. 26% potential increase in price ($277 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Pennsylvania to Sofia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 4, 2025.
Use the filters below to find and compare flights from Pennsylvania to Sofia that are best for you.

Fly from

Pennsylvania

Fly to

Sofia

Route

Depart

Return

Price

NewarkSofia

EWR - SOF

EWRSOF

Newark

Tue 2/17

5:55 pm-11:50 am

1 stop10h 55m

Sofia

Tue 2/24

7:55 am-1:55 pm

1 stop13h 00m

$355

NewarkSofia

EWR - SOF

EWRSOF

Newark

Sun 1/25

6:40 pm-2:15 pm

1 stop12h 35m

Sofia

Mon 2/9

6:45 pm-1:55 pm

1 stop26h 10m

$360

NewarkSofia

EWR - SOF

EWRSOF

Newark

Tue 1/27

8:50 pm-6:20 pm

1 stop14h 30m

Sofia

Tue 2/10

7:55 am-1:55 pm

1 stop13h 00m

$393

NewarkSofia

EWR - SOF

EWRSOF

Newark

Wed 1/28

8:50 pm-6:20 pm

1 stop14h 30m

Sofia

Wed 2/11

7:55 am-1:55 pm

1 stop13h 00m

$393

NewarkSofia

EWR - SOF

EWRSOF

Newark

Sun 1/25

6:40 pm-2:15 pm

1 stop12h 35m

Sofia

Mon 2/9

3:00 pm-1:30 pm

2 stops29h 30m

$414

NewarkSofia

EWR - SOF

EWRSOF

Newark

Mon 1/12

6:05 pm-1:25 pm

1 stop12h 20m

Sofia

Tue 1/27

7:55 am-1:55 pm

1 stop13h 00m

$415

NewarkSofia

EWR - SOF

EWRSOF

Newark

Thu 1/29

6:05 pm-1:50 pm

1 stop12h 45m

Sofia

Wed 2/11

7:55 am-1:55 pm

1 stop13h 00m

$416

NewarkSofia

EWR - SOF

EWRSOF

Newark

Tue 1/27

10:00 pm-11:55 pm

2 stops18h 55m

Sofia

Thu 2/12

6:45 pm-1:55 pm

1 stop26h 10m

$417

NewarkSofia

EWR - SOF

EWRSOF

Newark

Wed 1/28

10:00 pm-11:55 pm

2 stops18h 55m

Sofia

Tue 2/10

6:45 pm-1:55 pm

1 stop26h 10m

$417

NewarkSofia

EWR - SOF

EWRSOF

Newark

Tue 1/27

10:00 pm-11:55 pm

2 stops18h 55m

Sofia

Tue 2/10

6:45 pm-1:55 pm

1 stop26h 10m

$417

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Pennsylvania to Sofia

Have a flexible travel schedule? Discover the best time to fly to Sofia from Pennsylvania with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Pennsylvania to Sofia

What is the cheapest month to book a flight from Pennsylvania to Sofia?

Currently, October is the cheapest month in which you can book a flight from Pennsylvania to Sofia (average of $476). Flying from Pennsylvania to Sofia in May is currently the most expensive (average of $739). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PA to SOF?

Find hourly flight availability from Pennsylvania to Sofia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 4, 2025.

It’s typically best to fly out from Pennsylvania to Sofia in the evening. Doing so could potentially save you 48% on the flight price compared to flying in the morning, which is usually more expensive.

Related info for your journey

Find useful and relevant information for your journey from Pennsylvania to Sofia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Sofia from Pennsylvania?

    Most people fly into Sofia (SOF) if they book a flight to Sofia from Pennsylvania. Sofia is conveniently located just 4.2 mi from Sofia’s city center.

  • How long is the flight from Pennsylvania to Sofia?

    Airlines like Austrian Airlines, SWISS, and United Airlines fly from Pennsylvania to Sofia in about 10h 55m. The time it takes to get you to your destination can typically vary by up to 1h 40m. The distance between Pennsylvania and Sofia is about 4721 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Pennsylvania to Sofia?

    While some choose either Newark - Sofia or New York LaGuardia - Sofia, New York John F Kennedy Intl - Sofia is the most popular route from Pennsylvania to Sofia.

  • Can I find deals for flights from Pennsylvania to Sofia that include hotel bookings?

    Yes. In addition to deals on Pennsylvania to Sofia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Pennsylvania to Sofia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Pennsylvania to Sofia.

  • Can I find deals for business class flights from Pennsylvania to Sofia?

    Yes. Cheapflights offers flight deals from Pennsylvania to Sofia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Pennsylvania to Sofia?

    Currently, October is the cheapest month in which you can book a flight from Pennsylvania to Sofia (average of $476). Flying from Pennsylvania to Sofia in May is currently the most expensive (average of $739). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Pennsylvania to Sofia

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Sofia flights
John F Kennedy Intl to Sofia flights
Dallas/Fort Worth to Sofia flights
Newark to Sofia flights
LaGuardia to Sofia flights
Hobby to Sofia flights
Los Angeles to Sofia flights
Boston to Sofia flights
Miami to Sofia flights
Love Field to Sofia flights
Dulles Intl to Sofia flights
Midway to Sofia flights
George Bush Intcntl to Sofia flights
San Francisco to Sofia flights
Atlanta to Sofia flights
Reagan-National to Sofia flights
Seattle to Sofia flights
Las Vegas to Sofia flights
Baltimore to Sofia flights
Orlando to Sofia flights
Denver to Sofia flights
Santa Ana to Sofia flights
Charlotte to Sofia flights
Fort Lauderdale to Sofia flights
San Jose to Sofia flights
Sky Harbor Intl to Sofia flights
Salt Lake City to Sofia flights
Oakland to Sofia flights
Minneapolis to Sofia flights
Philadelphia to Sofia flights
Tampa to Sofia flights
Austin to Sofia flights
Rochester to Sofia flights
Detroit to Sofia flights
Kansas City to Sofia flights
Portland to Sofia flights
West Palm Beach to Sofia flights
Cincinnati to Sofia flights
Pittsburgh to Sofia flights
Sacramento to Sofia flights
Nashville to Sofia flights
Cleveland to Sofia flights
Sarasota to Sofia flights
Sioux Falls to Sofia flights
San Diego to Sofia flights
St. Louis to Sofia flights
Raleigh to Sofia flights
Richmond to Sofia flights
Norfolk to Sofia flights
Providence to Sofia flights

Top 4 airlines flying from Pennsylvania to Sofia

Discover the top 4 airlines that operate flights from Pennsylvania to Sofia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$511Average$832FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$540Average$1,027FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$626Average$713FlexibilityNo cancel feeOn-time70%
Turkish AirlinesCheapest$802Average$1,239FlexibilityNo cancel feeOn-time77%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.