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Sofia

$216+ 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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SOF
Jan 28 — Feb 41
Wed 1/28
Wed 2/4
1 adult, Economy
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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 29, 2025.

This Expedia deal was found by Cheapflights users on 12/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2710:20 pmIAD - SOF
2 stops32h 15mMultiple Airlines
Sun 1/186:45 pmSOF - IAD
2 stops50h 15mMultiple Airlines
Deal found 12/27$780
This United Airlines deal was found by Cheapflights users on 12/27. 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.
Sat 12/275:45 pmIAD - SOF
2 stops22h 00mUnited Airlines
Sun 1/182:00 pmSOF - IAD
1 stop32h 35mUnited Airlines
Deal found 12/27$785
This United Airlines deal was found by Cheapflights users on 12/28. 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 12/296:25 pmJFK - SOF
2 stops21h 20mUnited Airlines
Sat 1/106:25 amSOF - JFK
2 stops37h 55mUnited Airlines
Deal found 12/28$858
This Expedia deal was found by Cheapflights users on 12/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/278:05 pmEWR - SOF
2 stops34h 30mLufthansa
Wed 12/316:10 amSOF - EWR
1 stop14h 50mLufthansa
Deal found 12/27$909
This Booking.com deal was found by Cheapflights users on 12/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2710:55 pmIAD - SOF
1 stop31h 05mLufthansa
Sun 1/182:25 pmSOF - IAD
1 stop32h 25mLufthansa
Deal found 12/27$915
This United Airlines deal was found by Cheapflights users on 12/28. 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 12/287:35 pmJFK - SOF
2 stops44h 10mUnited Airlines
Sat 1/106:25 amSOF - JFK
2 stops37h 55mUnited Airlines
Deal found 12/28$1,084
This Kiwi.com deal was found by Cheapflights users on 12/28. 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.
Mon 12/299:10 pmJFK - SOF
1 stop33h 35mMultiple Airlines
Sat 1/1011:15 pmSOF - JFK
2 stops46h 35mMultiple Airlines
Deal found 12/28$1,090
This Gurufare deal was found by Cheapflights users on 12/27. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:00 pmJFK - SOF
1 stop11h 15mMultiple Airlines
Sun 1/47:05 pmSOF - JFK
1 stop27h 35mMultiple Airlines
Deal found 12/27$1,093
This United Airlines deal was found by Cheapflights users on 12/27. 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.
Wed 12/315:30 pmJFK - SOF
2 stops22h 15mUnited Airlines
Sun 1/42:00 pmSOF - JFK
1 stop32h 40mUnited Airlines
Deal found 12/27$1,138
This FlightHub deal was found by Cheapflights users on 12/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/293:20 pmLGA - SOF
2 stops15h 05mAir Canada
Sat 1/106:25 amSOF - LGA
2 stops17h 32mAir Canada
Deal found 12/28$1,164
This Arangrant deal was found by Cheapflights users on 12/26. 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 Arangrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2810:40 pmEWR - SOF
2 stops17h 05mLufthansa
Wed 1/76:05 amSOF - EWR
1 stop13h 35mLufthansa
Deal found 12/26$1,186
This AranGrant deal was found by Cheapflights users on 12/27. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:40 pmEWR - SOF
2 stops31h 35mLufthansa
Tue 1/66:00 amSOF - EWR
1 stop15h 00mLufthansa
Deal found 12/27$1,196

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 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$344
(Kiwi.com)

One-way from

$216
(oojo)

Popular in

June

Cheapest in

October

Average price

$719
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. 24% potential increase in price ($238 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($32 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 29, 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 2/10

5:55 pm-6:00 pm

1 stop17h 05m

Sofia

Tue 2/17

7:55 am-1:55 pm

1 stop13h 00m

$354

NewarkSofia

EWR - SOF

EWRSOF

Newark

Tue 1/13

5:55 pm-6:00 pm

1 stop17h 05m

Sofia

Wed 1/21

7:55 am-1:55 pm

1 stop13h 00m

$386

NewarkSofia

EWR - SOF

EWRSOF

Newark

Wed 1/21

7:20 pm-6:20 pm

2 stops16h 00m

Sofia

Tue 1/27

7:55 am-1:55 pm

1 stop13h 00m

$398

NewarkSofia

EWR - SOF

EWRSOF

Newark

Sat 1/17

7:00 pm-1:00 pm

2 stops35h 00m

Sofia

Mon 1/26

1:45 pm-12:40 pm

1 stop29h 55m

$417

NewarkSofia

EWR - SOF

EWRSOF

Newark

Sun 1/18

6:00 pm-6:00 pm

2 stops17h 00m

Sofia

Mon 2/2

6:45 pm-1:55 pm

1 stop26h 10m

$417

NewarkSofia

EWR - SOF

EWRSOF

Newark

Mon 4/13

4:56 pm-11:10 pm

2 stops23h 14m

Sofia

Fri 5/1

6:20 am-8:07 pm

2 stops20h 47m

$419

NewarkSofia

EWR - SOF

EWRSOF

Newark

Mon 1/19

2:30 pm-10:45 pm

2 stops25h 15m

Sofia

Mon 2/2

1:45 pm-1:55 pm

2 stops31h 10m

$420

NewarkSofia

EWR - SOF

EWRSOF

Newark

Sun 1/11

5:35 pm-11:55 pm

2 stops23h 20m

Sofia

Mon 1/26

6:45 pm-1:55 pm

1 stop26h 10m

$429

NewarkSofia

EWR - SOF

EWRSOF

Newark

Tue 5/5

2:35 pm-12:10 pm

2 stops14h 35m

Sofia

Tue 5/26

12:55 pm-7:39 am

2 stops25h 44m

$431

NewarkSofia

EWR - SOF

EWRSOF

Newark

Wed 3/25

7:05 pm-6:00 pm

1 stop16h 55m

Sofia

Wed 4/1

1:50 pm-8:27 am

2 stops25h 37m

$433

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/28

Showing 1-10 of 60 results
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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 $736). 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.

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, United Airlines, and Air Canada fly from Pennsylvania to Sofia in about 16h. The time it takes to get you to your destination can typically vary by up to 2h 10m. 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 $736). 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

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Alternative routes for Pennsylvania to Sofia

See prices for flight routes from nearby airports that may be better suited for you.
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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 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$511Average$996FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$540Average$1,047FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$627Average$716FlexibilityNo cancel feeOn-time70%
Turkish AirlinesCheapest$802Average$1,239FlexibilityNo cancel feeOn-time77%

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