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$405+ 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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SOF
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
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 October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$481
(FlightHub)

One-way from

$405
(United Airlines)

Popular in

May

Cheapest in

October

Average price

$518
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 Bulgaria
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One-way flight from Philadelphia to Bulgaria
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Highest demand for flights based on searches. 26% potential increase in price ($274 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($44 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 29, 2025.

This oojo deal was found by Cheapflights users on 10/28. 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.
Tue 12/94:32 pmPHL - SOF
2 stops15h 38mTurkish Airlines
Sat 12/134:00 pmSOF - PHL
2 stops48h 39mTurkish Airlines
Deal found 10/28$715
This oojo deal was found by Cheapflights users on 10/28. 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.
Wed 12/1010:24 amPHL - SOF
2 stops27h 26mTurkish Airlines
Sat 12/134:00 pmSOF - PHL
2 stops48h 39mTurkish Airlines
Deal found 10/28$913
This Booking.com deal was found by Cheapflights users on 10/29. 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.
Tue 11/119:20 amPHL - SOF
2 stops22h 40mMultiple Airlines
Wed 11/196:05 amSOF - PHL
2 stops23h 41mMultiple Airlines
Deal found 10/29$1,034
This United Airlines deal was found by Cheapflights users on 10/28. 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 12/216:34 pmPHL - SOF
2 stops45h 11mUnited Airlines
Fri 1/306:10 amSOF - PHL
2 stops15h 37mUnited Airlines
Deal found 10/28$1,046
This Mytrip deal was found by Cheapflights users on 10/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/103:30 pmPHL - SOF
2 stops22h 10mMultiple Airlines
Sat 12/135:00 amSOF - PHL
3 stops18h 00mMultiple Airlines
Deal found 10/28$1,048
This United Airlines deal was found by Cheapflights users on 10/28. 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 12/216:34 pmPHL - SOF
2 stops45h 11mUnited Airlines
Thu 1/292:35 pmSOF - PHL
2 stops26h 02mUnited Airlines
Deal found 10/28$1,051
This Orbitz deal was found by Cheapflights users on 10/28. 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.
Tue 12/95:40 pmPHL - SOF
1 stop13h 05mMultiple Airlines
Sat 12/1312:05 pmSOF - PHL
2 stops18h 50mMultiple Airlines
Deal found 10/28$1,062
This United Airlines deal was found by Cheapflights users on 10/28. 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 12/216:34 pmPHL - SOF
2 stops45h 11mUnited Airlines
Mon 2/22:20 pmSOF - PHL
2 stops31h 27mUnited Airlines
Deal found 10/28$1,066
This Gurufare deal was found by Cheapflights users on 10/29. 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 12/139:20 amPHL - SOF
2 stops19h 30mAustrian Airlines
Sat 12/206:15 pmSOF - PHL
2 stops35h 31mAustrian Airlines
Deal found 10/29$1,079

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 October 29, 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 3/31

3:30 pm-6:40 pm

2 stops20h 10m

Sofia

Tue 4/7

6:15 am-4:00 pm

1 stop16h 45m

$481

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Tue 3/31

3:30 pm-6:40 pm

2 stops20h 10m

Sofia

Tue 4/7

6:00 am-2:46 pm

2 stops39h 46m

$483

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Tue 3/31

10:15 am-12:00 pm

2 stops18h 45m

Sofia

Tue 4/7

6:15 am-4:00 pm

1 stop16h 45m

$484

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Tue 3/31

5:35 pm-1:05 pm

1 stop12h 30m

Sofia

Tue 4/7

6:15 am-4:00 pm

1 stop16h 45m

$487

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Wed 3/25

8:05 pm-6:20 pm

2 stops16h 15m

Sofia

Sun 3/29

6:15 am-4:00 pm

1 stop16h 45m

$535

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Wed 3/25

4:35 pm-6:20 pm

2 stops19h 45m

Sofia

Sun 3/29

6:10 am-2:46 pm

2 stops39h 36m

$540

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Tue 12/9

6:30 am-10:45 pm

2 stops33h 15m

$405

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Tue 12/9

5:40 pm-1:45 pm

1 stop13h 05m

$412

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Sat 4/18

6:45 pm-8:20 pm

1 stop18h 35m

$462

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Thu 4/16

6:45 pm-1:30 pm

1 stop11h 45m

$462

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 18 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, October is the cheapest month in which you can book a flight from Philadelphia to Bulgaria (average of $330). Flying from Philadelphia to Bulgaria in April is currently the most expensive (average of $592). 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 October 29, 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
8,999 reviews

Comfort

7.3

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
8,999 reviews
United Airlines
7.4
Good
8,999 reviews

Comfort

7.3

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Lufthansa
6.8
Okay
7,541 reviews
United Airlines
7.4
Good
8,999 reviews

Comfort

7.3

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

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 20h 10m. Fly via Air Canada to get the fastest option. Philadelphia and Bulgaria are separated by a distance of 4800 mi.

  • What are the cheapest airlines to fly from Philadelphia to Bulgaria one-way?

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $405. However, be on the lookout for offers from Lufthansa and British Airways, as they are both options that can get you from Philadelphia to Bulgaria for a low price.

  • 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, October is the cheapest month in which you can book a flight from Philadelphia to Bulgaria (average of $330). Flying from Philadelphia to Bulgaria in April is currently the most expensive (average of $592). 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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See prices for flight routes from nearby airports that may be better suited for you.
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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 October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$511Average$877FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$544Average$794FlexibilityNo cancel feeOn-time69%

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