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$788+ Cheap flights from Philadelphia (PHL) to Sofia (SOF)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SOF
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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Cheap flight deals from Philadelphia to Sofia

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Sofia (SOF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 29, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$788
(Gurufare)

Popular in

June

Cheapest in

February

Average price

$795
Provider with most accurate pricing for Philadelphia-Sofia flight deals.
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Provider most trusted by Cheapflights users for Philadelphia-Sofia flights.
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From Philadelphia to Sofia
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Highest demand for flights based on searches. 33% potential increase in price ($423 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($45 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Philadelphia to Sofia

Cheapest flights from Philadelphia to Sofia
Explore the most affordable flight options available from Philadelphia to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

This Gurufare deal was found by Cheapflights users on 4/28. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/55:35 pmPHL - SOF
1 stop12h 50mLufthansa
Fri 9/126:15 amSOF - PHL
1 stop16h 45mLufthansa
Deal found 4/28$788
This Air Canada deal was found by Cheapflights users on 4/28. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/510:35 amPHL - SOF
2 stops17h 40mAir Canada
Fri 9/126:15 amSOF - PHL
2 stops23h 14mAir Canada
Deal found 4/28$790
This United Airlines deal was found by Cheapflights users on 4/28. 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.
Fri 9/510:30 amPHL - SOF
2 stops29h 30mUnited Airlines
Fri 9/126:15 amSOF - PHL
1 stop16h 45mUnited Airlines
Deal found 4/28$792
This Booking.com deal was found by Cheapflights users on 4/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/19:45 amPHL - SOF
2 stops17h 20mMultiple Airlines
Wed 10/86:15 amSOF - PHL
2 stops22h 23mMultiple Airlines
Deal found 4/28$806
This oojo deal was found by Cheapflights users on 4/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/166:00 amPHL - SOF
2 stops31h 25mTurkish Airlines
Mon 5/269:25 amSOF - PHL
2 stops31h 12mTurkish Airlines
Deal found 4/28$830
This Orbitz deal was found by Cheapflights users on 4/28. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/254:05 pmPHL - SOF
2 stops20h 05mBritish Airways
Sun 6/89:10 pmSOF - PHL
1 stop26h 15mBritish Airways
Deal found 4/28$1,131

Cheapflights Fare Finder

Customize your flight search to find flights from Philadelphia 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 April 29, 2025.
Use the filters below to find and compare flights from Philadelphia to Sofia that are best for you.

Fly from

Philadelphia

Fly to

Sofia

Route

Depart

Return

Price

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Fri 9/5

5:35 pm-1:25 pm

1 stop12h 50m

Sofia

Fri 9/12

6:15 am-4:00 pm

1 stop16h 45m

$788

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Fri 9/5

10:35 am-11:15 am

2 stops17h 40m

Sofia

Fri 9/12

6:15 am-10:29 pm

2 stops23h 14m

$790

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Fri 9/5

10:30 am-11:00 pm

2 stops29h 30m

Sofia

Fri 9/12

6:15 am-4:00 pm

1 stop16h 45m

$792

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Wed 10/1

9:45 am-10:05 am

2 stops17h 20m

Sofia

Wed 10/8

6:15 am-9:38 pm

2 stops22h 23m

$806

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Fri 5/16

6:00 am-8:25 pm

2 stops31h 25m

Sofia

Mon 5/26

9:25 am-9:37 am

2 stops31h 12m

$830

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Sun 5/25

4:05 pm-7:10 pm

2 stops20h 05m

Sofia

Sun 6/8

9:10 pm-4:25 pm

1 stop26h 15m

$1,131

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Compare providers for flights from Philadelphia to Sofia

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to Sofia in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Philadelphia-Sofia flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Philadelphia-Sofia flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Philadelphia-Sofia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-Sofia flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-Sofia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Philadelphia to Sofia

Have a flexible travel schedule? Discover the best time to fly to Sofia from Philadelphia 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 Philadelphia to Sofia

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

Currently, November is the cheapest month in which you can book a flight from Philadelphia to Sofia (average of $632). Flying from Philadelphia to Sofia in June is currently the most expensive (average of $1,218). 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.

Rainfall in Sofia by month

Plan your trip to Sofia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sofia ranges from 1.2 - 2.8 inches per month. June is typically the wettest month, when rainfall can reach 2.8 in. January is typically the driest time to visit Sofia when rainfall is around 1.2 in.

Temperature in Sofia by month

Plan your trip to Sofia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Sofia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Sofia

Get insights into the airlines that provide service to Sofia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sofia. Reviews last updated April 29, 2025.
United Airlines
7.4
Good
8,696 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,696 reviews
United Airlines
7.4
Good
8,696 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Turkish Airlines
7.3
Good
3,785 reviews
United Airlines
7.4
Good
8,696 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Air Canada
7.0
Good
9,240 reviews
United Airlines
7.4
Good
8,696 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Lufthansa
6.7
Okay
7,042 reviews
United Airlines
7.4
Good
8,696 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
British Airways
6.6
Okay
6,830 reviews
United Airlines
7.4
Good
8,696 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

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

  • What are the cheapest airlines flying from Philadelphia to Sofia round-trip?

    According to our current data, Lufthansa ($788), Air Canada ($790), and United Airlines ($792) offers the cheapest pricing from Philadelphia to Sofia. These flights start at 7% lower than the current average price 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Philadelphia 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 Philadelphia to Sofia?

    Currently, November is the cheapest month in which you can book a flight from Philadelphia to Sofia (average of $632). Flying from Philadelphia to Sofia in June is currently the most expensive (average of $1,218). 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 Philadelphia to Sofia

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Sofia flights
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LaGuardia to Sofia flights
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Pittsburgh to Sofia flights

Top 3 airlines flying from Philadelphia to Sofia

Discover the top 3 airlines that operate flights from Philadelphia 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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$560Average$832FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$608Average$866FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$646Average$794FlexibilityNo cancel feeOn-time69%

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