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Bulgaria

$238+ Cheap flights from Philadelphia (PHL) to Bulgaria

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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SOF
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Philadelphia to Bulgaria

Keep the following information in mind while searching for Philadelphia to Bulgaria flight deals. Data was last updated September 15, 2025.

Round-trip from

$497
(Mytrip)

One-way from

$238
(Kiwi.com)

Popular in

May

Cheapest in

February

Average price

$734
From Philadelphia to Bulgaria
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One-way flight from Philadelphia to Bulgaria
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Highest demand for flights based on searches. 24% potential increase in price ($256 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Philadelphia to Bulgaria

Cheapest flights from Philadelphia to Bulgaria
Explore the most affordable flight options available from Philadelphia to Bulgaria. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Mytrip deal was found by Cheapflights users on 9/14. 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 10/143:25 pmPHL - SOF
2 stops19h 25mMultiple Airlines
Wed 11/56:10 amSOF - PHL
2 stops40h 41mMultiple Airlines
Deal found 9/14$497
This Mytrip deal was found by Cheapflights users on 9/14. 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.
Mon 10/133:25 pmPHL - SOF
2 stops24h 25mMultiple Airlines
Wed 11/56:10 amSOF - PHL
2 stops40h 41mMultiple Airlines
Deal found 9/14$498
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/145:35 pmPHL - SOF
1 stop12h 45mLufthansa
Wed 11/57:05 pmSOF - PHL
1 stop28h 00mLufthansa
Deal found 9/14$501
This Lufthansa deal was found by Cheapflights users on 9/14. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/145:35 pmPHL - SOF
1 stop17h 15mLufthansa
Tue 11/46:00 amSOF - PHL
1 stop17h 05mLufthansa
Deal found 9/14$506
This Air Canada deal was found by Cheapflights users on 9/14. 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 10/143:25 pmPHL - SOF
2 stops14h 55mAir Canada
Tue 11/46:00 amSOF - PHL
2 stops23h 56mAir Canada
Deal found 9/14$513
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Tue 10/143:00 pmPHL - SOF
2 stops14h 00mUnited Airlines
Wed 11/56:10 amSOF - PHL
2 stops34h 36mUnited Airlines
Deal found 9/14$516
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Tue 10/145:35 pmPHL - SOF
1 stop12h 45mUnited Airlines
Mon 11/32:20 pmSOF - PHL
1 stop32h 45mUnited Airlines
Deal found 9/14$526
This Gotogate deal was found by Cheapflights users on 9/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/157:30 amPHL - SOF
2 stops21h 30mMultiple Airlines
Wed 10/224:05 pmSOF - PHL
2 stops36h 33mMultiple Airlines
Deal found 9/12$529
This Booking.com deal was found by Cheapflights users on 9/12. 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 10/155:35 pmPHL - SOF
1 stop12h 40mLufthansa
Wed 10/226:15 amSOF - PHL
1 stop16h 45mLufthansa
Deal found 9/12$531
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/145:35 pmPHL - SOF
1 stop12h 45mLufthansa
Sat 11/86:25 amSOF - PHL
1 stop17h 10mLufthansa
Deal found 9/14$533
This Trip.com deal was found by Cheapflights users on 9/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/206:10 pmPHL - VAR
2 stops24h 10mMultiple Airlines
Sun 1/47:50 pmVAR - PHL
2 stops51h 15mMultiple Airlines
Deal found 9/14$1,296
This Gurufare deal was found by Cheapflights users on 9/14. 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.
Sat 12/206:10 pmPHL - VAR
2 stops14h 05mAustrian Airlines
Sat 1/34:00 pmVAR - PHL
2 stops31h 05mAustrian Airlines
Deal found 9/14$1,668

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to Bulgaria 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 September 15, 2025.
Use the filters below to find and compare flights from Philadelphia to Bulgaria that are best for you.

Fly from

Philadelphia

Fly to

Bulgaria

Route

Depart

Return

Price

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Tue 10/14

7:30 am-11:40 am

2 stops21h 10m

Sofia

Wed 11/5

7:05 pm-4:05 pm

1 stop28h 00m

$499

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Tue 10/14

5:35 pm-1:20 pm

1 stop12h 45m

Sofia

Wed 11/5

7:05 pm-4:05 pm

1 stop28h 00m

$501

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Tue 10/14

3:25 pm-1:20 pm

2 stops14h 55m

Sofia

Thu 11/6

6:00 am-2:47 pm

2 stops15h 47m

$506

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Tue 10/14

5:35 pm-1:20 pm

1 stop12h 45m

Sofia

Fri 11/7

6:10 am-2:47 pm

2 stops15h 37m

$506

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Tue 10/14

5:35 pm-5:50 pm

1 stop17h 15m

Sofia

Tue 11/4

6:00 am-4:05 pm

1 stop17h 05m

$506

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Tue 10/14

3:25 pm-1:20 pm

2 stops14h 55m

Sofia

Tue 11/4

6:00 am-10:56 pm

2 stops23h 56m

$513

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Tue 10/14

3:00 pm-12:00 pm

2 stops14h 00m

Sofia

Wed 11/5

6:10 am-9:46 am

2 stops34h 36m

$516

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Mon 10/13

3:25 pm-10:50 pm

2 stops24h 25m

Sofia

Wed 11/5

7:05 pm-4:05 pm

1 stop28h 00m

$526

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Tue 10/14

5:35 pm-1:20 pm

1 stop12h 45m

Sofia

Mon 11/3

2:20 pm-4:05 pm

1 stop32h 45m

$526

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Tue 10/14

3:25 pm-1:20 pm

2 stops14h 55m

Sofia

Mon 11/3

2:20 pm-2:47 pm

2 stops31h 27m

$526

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 16 results
1
2

Best time to book a flight from Philadelphia to Bulgaria

Have a flexible travel schedule? Discover the best time to fly to Bulgaria 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 Bulgaria

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

Currently, November is the cheapest month in which you can book a flight from Philadelphia to Bulgaria (average of $632). Flying from Philadelphia to Bulgaria in June is currently the most expensive (average of $1,185). 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.

Reviews of airlines servicing Bulgaria

Get insights into the airlines that provide service to Bulgaria. 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 Bulgaria. Reviews last updated September 15, 2025.
Peruse reviews from past customers who have flown with United Airlines and Lufthansa from Philadelphia to Bulgaria to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,929 reviews

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Entertainment

7.1

Boarding

7.7

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
8,929 reviews
United Airlines
7.4
Good
8,929 reviews

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Entertainment

7.1

Boarding

7.7

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
6.8
Okay
7,407 reviews
United Airlines
7.4
Good
8,929 reviews

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Entertainment

7.1

Boarding

7.7

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 Bulgaria. 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 from for flights from Philadelphia to Bulgaria?

    Philadelphia (PHL), located 7.0 mi from the city center, is the airport you fly out of when you book flights from Philadelphia to Bulgaria.

  • How long is the flight from Philadelphia to Bulgaria?

    There are many flights that can get you from Philadelphia to Bulgaria in 12h 45m. Fly via Lufthansa, Air Canada, or United Airlines to get the fastest option. Philadelphia and Bulgaria are separated by a distance of 4800 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Philadelphia to Bulgaria?

    Most travelers choose Philadelphia - Sofia, Philadelphia - Bourgas or Philadelphia - Varna when deciding on the best route from Philadelphia to Bulgaria.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Philadelphia to Bulgaria (average of $632). Flying from Philadelphia to Bulgaria in June is currently the most expensive (average of $1,185). 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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Top 2 airlines flying from Philadelphia to Bulgaria

Discover the top 2 airlines that operate flights from Philadelphia to Bulgaria. 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$582Average$874FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$646Average$795FlexibilityNo cancel feeOn-time69%

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