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Sofia

$208+ 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 2/23. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SOF
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
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 January 27, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/25. 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.
Tue 3/106:55 pm
EWR
-
SOF
1 stop10h 55m
Austrian Airlines
Wed 4/18:00 am
SOF
-
EWR
2 stops34h 30m
Austrian Airlines
Deal found 1/25$330
This Kiwi.com deal was found by Cheapflights users on 1/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/98:50 pm
EWR
-
SOF
1 stop18h 55m
Multiple Airlines
Mon 2/166:45 pm
SOF
-
EWR
1 stop26h 30m
Multiple Airlines
Deal found 1/26$352
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/185:55 pm
EWR
-
SOF
1 stop10h 55m
Austrian Airlines
Wed 3/47:55 am
SOF
-
EWR
1 stop13h 20m
Austrian Airlines
Deal found 1/27$355
This Kiwi.com deal was found by Cheapflights users on 1/25. 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 2/15:55 pm
EWR
-
SOF
1 stop10h 55m
Austrian Airlines
Mon 2/1612:35 pm
SOF
-
EWR
1 stop32h 40m
Austrian Airlines
Deal found 1/25$356
This Mytrip deal was found by Cheapflights users on 1/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1810:30 am
EWR
-
SOF
2 stops24h 50m
Multiple Airlines
Wed 3/47:55 am
SOF
-
EWR
1 stop13h 20m
Multiple Airlines
Deal found 1/27$373
This Mytrip deal was found by Cheapflights users on 1/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1711:05 am
EWR
-
SOF
2 stops24h 15m
Multiple Airlines
Tue 3/37:55 am
SOF
-
EWR
1 stop13h 20m
Multiple Airlines
Deal found 1/26$374
This Mytrip deal was found by Cheapflights users on 1/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/72:30 pm
EWR
-
SOF
2 stops14h 40m
Multiple Airlines
Thu 4/1611:05 am
SOF
-
EWR
1 stop16h 10m
Multiple Airlines
Deal found 1/26$382
This FlightHub deal was found by Cheapflights users on 1/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/178:50 pm
EWR
-
SOF
1 stop14h 30m
Multiple Airlines
Wed 2/257:55 am
SOF
-
EWR
1 stop13h 20m
Multiple Airlines
Deal found 1/26$383
This FlightHub deal was found by Cheapflights users on 1/24. 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.
Sun 2/15:55 pm
EWR
-
SOF
1 stop10h 55m
Austrian Airlines
Wed 2/117:55 am
SOF
-
EWR
1 stop13h 20m
Austrian Airlines
Deal found 1/24$387
This KAYAK deal was found by Cheapflights users on 1/25. 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.
Mon 4/139:45 pm
EWR
-
SOF
1 stop29h 35m
SWISS
Tue 4/281:05 pm
SOF
-
EWR
1 stop14h 10m
SWISS
Deal found 1/25$388
This Air Canada deal was found by Cheapflights users on 1/25. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/196:45 am
LGA
-
SOF
2 stops22h 25m
Air Canada
Thu 5/2812:55 pm
SOF
-
LGA
2 stops27h 46m
Air Canada
Deal found 1/25$458
This Mytrip deal was found by Cheapflights users on 1/25. 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.
Thu 3/199:45 am
JFK
-
SOF
2 stops22h 05m
Multiple Airlines
Tue 3/246:05 am
SOF
-
JFK
1 stop16h 35m
Multiple Airlines
Deal found 1/25$458

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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$330
(Kiwi.com)

One-way from

$208
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$702
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. 2% potential increase in price ($21 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 January 27, 2026.
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

Wed 4/15

3:07 pm-12:10 pm

2 stops14h 03m

Sofia

Tue 4/28

6:10 am-6:45 pm

1 stop19h 35m

$401

NewarkSofia

EWR - SOF

EWRSOF

Newark

Mon 4/13

2:30 pm-12:10 pm

2 stops14h 40m

Sofia

Wed 4/29

8:00 am-1:55 pm

1 stop12h 55m

$402

NewarkSofia

EWR - SOF

EWRSOF

Newark

Mon 2/23

3:03 pm-1:15 pm

2 stops15h 12m

Sofia

Tue 3/3

6:05 am-12:40 pm

1 stop13h 35m

$402

NewarkSofia

EWR - SOF

EWRSOF

Newark

Mon 4/13

11:05 am-12:10 pm

2 stops18h 05m

Sofia

Fri 4/24

6:10 am-6:45 pm

1 stop19h 35m

$405

NewarkSofia

EWR - SOF

EWRSOF

Newark

Tue 4/14

3:07 pm-12:10 pm

2 stops14h 03m

Sofia

Thu 4/23

6:30 am-3:55 pm

1 stop16h 25m

$409

NewarkSofia

EWR - SOF

EWRSOF

Newark

Wed 3/18

5:25 pm-10:45 pm

2 stops23h 20m

Sofia

Wed 4/1

12:55 pm-1:15 am

2 stops19h 20m

$411

NewarkSofia

EWR - SOF

EWRSOF

Newark

Wed 4/15

3:07 pm-12:10 pm

2 stops14h 03m

Sofia

Thu 4/23

6:10 am-11:56 pm

2 stops24h 46m

$411

NewarkSofia

EWR - SOF

EWRSOF

Newark

Tue 4/14

3:07 pm-12:10 pm

2 stops14h 03m

Sofia

Tue 4/28

6:10 am-11:56 pm

2 stops24h 46m

$411

NewarkSofia

EWR - SOF

EWRSOF

Newark

Tue 3/10

3:18 pm-1:15 pm

2 stops15h 57m

Sofia

Wed 4/1

12:55 pm-11:56 pm

2 stops18h 01m

$411

NewarkSofia

EWR - SOF

EWRSOF

Newark

Tue 4/14

7:15 pm-10:50 pm

1 stop20h 35m

Sofia

Wed 4/29

8:00 am-1:55 pm

1 stop12h 55m

$416

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

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 December is currently the most expensive (average of $1,025). 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 United Airlines, KLM, and Air Canada fly from Pennsylvania to Sofia in about 14h 03m. The time it takes to get you to your destination can typically vary by up to 6h 07m. 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 December is currently the most expensive (average of $1,025). 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 January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$485Average$1,033FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$540Average$961FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$627Average$727FlexibilityNo cancel feeOn-time70%
Turkish AirlinesCheapest$802Average$1,239FlexibilityNo cancel feeOn-time77%

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