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Sofia

$221+ 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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SOF
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
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 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/9. 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.
Wed 12/315:55 pmEWR - SOF
1 stop10h 55mAustrian Airlines
Wed 1/147:55 amSOF - EWR
1 stop13h 00mAustrian Airlines
Deal found 12/9$355
This CrystalTravel deal was found by Cheapflights users on 12/9. 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.
Wed 12/315:35 pmEWR - SOF
2 stops14h 40mSWISS
Wed 1/142:00 pmSOF - EWR
2 stops30h 55mSWISS
Deal found 12/9$422
This Kiwi.com deal was found by Cheapflights users on 12/9. 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.
Wed 12/105:30 pmJFK - SOF
1 stop12h 45mMultiple Airlines
Wed 12/177:55 amSOF - JFK
1 stop13h 20mMultiple Airlines
Deal found 12/9$494
This FlightHub deal was found by Cheapflights users on 12/9. 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.
Wed 12/105:35 pmEWR - SOF
2 stops12h 40mLufthansa
Wed 12/172:00 pmSOF - EWR
1 stop12h 05mLufthansa
Deal found 12/9$506
This KAYAK deal was found by Cheapflights users on 12/9. 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.
Wed 12/105:35 pmEWR - SOF
2 stops13h 15mLufthansa
Tue 12/162:00 pmSOF - EWR
1 stop12h 05mLufthansa
Deal found 12/9$507
This KAYAK deal was found by Cheapflights users on 12/9. 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.
Wed 12/106:40 pmEWR - SOF
2 stops13h 35mSWISS
Mon 12/223:00 pmSOF - EWR
2 stops52h 30mSWISS
Deal found 12/9$523
This KAYAK deal was found by Cheapflights users on 12/9. 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.
Tue 12/98:50 pmEWR - SOF
1 stop18h 55mLufthansa
Tue 12/166:05 amSOF - EWR
1 stop20h 00mLufthansa
Deal found 12/9$541
This FlightHub deal was found by Cheapflights users on 12/10. 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.
Thu 12/113:55 pmJFK - SOF
2 stops14h 20mMultiple Airlines
Mon 12/153:00 pmSOF - JFK
1 stop29h 05mMultiple Airlines
Deal found 12/10$544
This KAYAK deal was found by Cheapflights users on 12/9. 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.
Fri 12/126:40 pmEWR - SOF
2 stops32h 35mSWISS
Sun 12/2111:00 amSOF - EWR
2 stops56h 30mSWISS
Deal found 12/9$551
This KAYAK deal was found by Cheapflights users on 12/9. 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 12/117:35 pmJFK - SOF
2 stops55h 40mSWISS
Mon 12/223:00 pmSOF - JFK
2 stops54h 40mSWISS
Deal found 12/9$565
This SWISS deal was found by Cheapflights users on 12/9. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/104:25 pmJFK - SOF
1 stop15h 50mSWISS
Wed 12/172:00 pmSOF - JFK
2 stops31h 40mSWISS
Deal found 12/9$567
This KAYAK deal was found by Cheapflights users on 12/9. 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 12/117:35 pmJFK - SOF
2 stops55h 40mSWISS
Wed 12/172:00 pmSOF - JFK
2 stops31h 40mSWISS
Deal found 12/9$568

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 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$348
(Kiwi.com)

One-way from

$221
(Kiwi.com)

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. 22% potential increase in price ($223 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($33 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 12, 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 1/27

10:00 pm-6:20 pm

2 stops13h 20m

Sofia

Tue 2/3

7:55 am-1:55 pm

1 stop13h 00m

$370

NewarkSofia

EWR - SOF

EWRSOF

Newark

Tue 4/14

8:30 pm-11:10 pm

1 stop19h 40m

Sofia

Tue 4/28

1:15 pm-8:10 pm

1 stop13h 55m

$387

NewarkSofia

EWR - SOF

EWRSOF

Newark

Tue 4/14

3:07 pm-12:05 pm

2 stops13h 58m

Sofia

Tue 4/28

12:50 pm-6:45 pm

1 stop12h 55m

$400

NewarkSofia

EWR - SOF

EWRSOF

Newark

Sun 1/11

10:00 pm-6:20 pm

2 stops13h 20m

Sofia

Mon 1/26

3:00 pm-1:55 pm

1 stop29h 55m

$410

NewarkSofia

EWR - SOF

EWRSOF

Newark

Tue 1/27

10:00 pm-6:20 pm

2 stops13h 20m

Sofia

Tue 2/3

2:00 pm-12:00 pm

2 stops29h 00m

$414

NewarkSofia

EWR - SOF

EWRSOF

Newark

Thu 1/29

8:50 pm-10:45 pm

1 stop18h 55m

Sofia

Fri 2/6

7:55 am-1:55 pm

1 stop13h 00m

$443

NewarkSofia

EWR - SOF

EWRSOF

Newark

Wed 3/25

7:05 pm-6:00 pm

1 stop16h 55m

Sofia

Wed 4/1

6:20 am-7:09 pm

2 stops19h 49m

$446

New YorkSofia

JFK - SOF

JFKSOF

New York John F Kennedy Intl

Mon 5/11

3:45 pm-11:05 am

1 stop12h 20m

Sofia

Mon 6/8

7:25 pm-3:00 pm

1 stop26h 35m

$449

NewarkSofia

EWR - SOF

EWRSOF

Newark

Sun 1/11

10:00 pm-6:20 pm

2 stops13h 20m

Sofia

Sun 1/18

7:55 am-2:15 pm

1 stop13h 20m

$449

New YorkSofia

JFK - SOF

JFKSOF

New York John F Kennedy Intl

Sat 3/7

4:25 pm-10:15 am

1 stop10h 50m

Sofia

Fri 3/20

6:05 am-4:40 pm

1 stop16h 35m

$452

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

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.

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 12, 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 United Airlines, SWISS, and Lufthansa fly from Pennsylvania to Sofia in about 12h 20m. The time it takes to get you to your destination can typically vary by up to 1h 38m. The distance between Pennsylvania and Sofia is about 4707 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 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$511Average$834FlexibilityNo 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%

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