What is the cheapest airline that flies from Philadelphia to Bulgaria?

British Airways, United Airlines, and Lufthansa are the most popular carriers operating from Philadelphia to Bulgaria

What airlines fly to Bulgaria?

Lufthansa, Turkish Airlines and United Airlines are the top three most popular airlines that fly to Bulgaria from Philadelphia according to our data. Lufthansa is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Bulgaria. Keep in mind that there are 11 different airlines that fly to Bulgaria on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Philadelphia Airport to Bulgaria?

Prices for flights from Philadelphia Airport to Bulgaria are updated daily.

How many operators does momondo search for flights from Philadelphia Airport to Bulgaria?

As of September 2026, there are 2 operators available to choose from for flights from Philadelphia Airport to Bulgaria.

How old do you have to be to fly from Philadelphia Airport to Bulgaria?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Philadelphia Airport to Bulgaria.

What documentation or ID do you need to fly to Bulgaria?

The travel and health documents you'll need for your trip to Bulgaria may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Bulgaria. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$328 Cheap Flights from Philadelphia to Bulgaria in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Philadelphia to Bulgaria

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:35 pm - 8:10 pmPHL Philadelphia-SOF Sofia

18h 35m1 stop London Heathrow

5:15 pm - 4:15 pmSOF Sofia-PHL Philadelphia

30h 00m1 stop London Heathrow

$544British Airways

Tue, Jan 5 - Mon, Jan 11

6:00 pm - 8:10 pmPHL Philadelphia-SOF Sofia

19h 10m2 stops Boston Logan Intl London Heathrow

5:15 pm - 4:15 pmSOF Sofia-PHL Philadelphia

30h 00m1 stop London Heathrow

$548British Airways

Tue, Jan 5 - Mon, Jan 11

6:35 pm - 8:10 pmPHL Philadelphia-SOF Sofia

18h 35m1 stop London Heathrow

5:15 pm - 4:15 pmSOF Sofia-PHL Philadelphia

30h 00m1 stop London Heathrow

$555British Airways

Tue, Nov 3 - Mon, Nov 9

6:45 pm - 8:30 pmPHL Philadelphia-SOF Sofia

18h 45m1 stop London Heathrow

9:05 pm - 4:15 pmSOF Sofia-PHL Philadelphia

26h 10m1 stop London Heathrow

$555British Airways

Tue, Oct 20 - Wed, Dec 2

6:15 am - 10:55 pmPHL Philadelphia-SOF Sofia

34h 40m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

6:25 am - 4:05 pmSOF Sofia-PHL Philadelphia

16h 40m1 stop Frankfurt am Main

$598United Airlines

Tue, Oct 27 - Tue, Nov 17

6:10 am - 11:40 amPHL Philadelphia-SOF Sofia

22h 30m2 stops Chicago O'Hare Intl Vienna Intl

7:55 am - 9:39 pmSOF Sofia-PHL Philadelphia

20h 44m2 stops Vienna Intl Chicago O'Hare Intl

$602United Airlines

Mon, Oct 12 - Fri, Dec 4

7:00 am - 12:10 pmPHL Philadelphia-SOF Sofia

22h 10m2 stops Toronto Pearson Intl Munich Franz Josef Strauss

6:00 am - 10:56 pmSOF Sofia-PHL Philadelphia

23h 56m2 stops Munich Franz Josef Strauss Toronto Pearson Intl

$602United Airlines

Mon, Oct 19 - Fri, Dec 4

6:40 pm - 6:10 pmPHL Philadelphia-SOF Sofia

17h 30m1 stop Frankfurt am Main

6:25 am - 4:05 pmSOF Sofia-PHL Philadelphia

16h 40m1 stop Frankfurt am Main

$607Lufthansa

Tue, Oct 27 - Tue, Nov 17

5:40 pm - 1:25 pmPHL Philadelphia-SOF Sofia

12h 45m1 stop Frankfurt am Main

6:25 am - 4:05 pmSOF Sofia-PHL Philadelphia

16h 40m1 stop Frankfurt am Main

$612Lufthansa

Wed, Oct 21 - Thu, Dec 3

5:40 pm - 1:05 pmPHL Philadelphia-SOF Sofia

12h 25m1 stop Frankfurt am Main

6:25 am - 4:05 pmSOF Sofia-PHL Philadelphia

16h 40m1 stop Frankfurt am Main

$613Lufthansa

Tue, Oct 13 - Thu, Dec 3

Cheap last minute flights

Enter your travel dates to find the best prices.

10:05 am - 10:40 pmPHL Philadelphia-SOF Sofia

29h 35m2 stops Montreal Pierre Elliott Trudeau Intl Frankfurt am Main

6:55 pm - 4:05 pmSOF Sofia-PHL Philadelphia

28h 10m2 stops Vienna Intl Frankfurt am Main

$876Multiple Airlines

Thu, Sep 24 - Sun, Oct 4

10:05 am - 10:40 pmPHL Philadelphia-SOF Sofia

29h 35m2 stops Montreal Pierre Elliott Trudeau Intl Frankfurt am Main

1:50 pm - 4:05 pmSOF Sofia-PHL Philadelphia

33h 15m1 stop Frankfurt am Main

$964Multiple Airlines

Thu, Sep 24 - Sun, Oct 4

3:25 pm - 3:00 pmPHL Philadelphia-SOF Sofia

16h 35m3 stops Montreal Pierre Elliott Trudeau Intl Brussels Bruxelles-National Budapest Ferenc Liszt Intl

9:35 pm - 4:05 pmSOF Sofia-PHL Philadelphia

25h 30m3 stops Budapest Ferenc Liszt Intl Brussels Bruxelles-National Frankfurt am Main

$981Multiple Airlines

Thu, Sep 24 - Sun, Oct 4

6:45 pm - 1:25 pmPHL Philadelphia-SOF Sofia

11h 40m1 stop London Heathrow

9:05 pm - 4:40 pmSOF Sofia-PHL Philadelphia

26h 35m1 stop London Heathrow

$1,092British Airways

Thu, Sep 24 - Sun, Oct 4

4:20 pm - 2:30 pmPHL Philadelphia-SOF Sofia

15h 10m1 stop Madrid Barajas

7:00 am - 4:10 pmSOF Sofia-PHL Philadelphia

16h 10m1 stop Paris Charles de Gaulle

$1,361Multiple Airlines

Tue, Sep 22 - Thu, Sep 24

3:25 pm - 6:40 pmPHL Philadelphia-SOF Sofia

20h 15m2 stops Montreal Pierre Elliott Trudeau Intl Munich Franz Josef Strauss

6:30 am - 2:47 pmSOF Sofia-PHL Philadelphia

15h 17m2 stops Frankfurt am Main Montreal Pierre Elliott Trudeau Intl

$1,384Air Canada

Tue, Sep 22 - Thu, Sep 24

3:25 pm - 6:40 pmPHL Philadelphia-SOF Sofia

20h 15m2 stops Montreal Pierre Elliott Trudeau Intl Munich Franz Josef Strauss

6:30 am - 4:05 pmSOF Sofia-PHL Philadelphia

16h 35m1 stop Frankfurt am Main

$1,403Multiple Airlines

Tue, Sep 22 - Thu, Sep 24

8:25 pm - 1:25 amPHL Philadelphia-SOF Sofia

22h 00m2 stops Dublin Madrid Barajas

10:45 am - 2:30 pmSOF Sofia-PHL Philadelphia

34h 45m3 stops Athens Eleftherios V. Larnaca Doha Hamad Intl

$1,637Multiple Airlines

Tue, Sep 22 - Thu, Sep 24

10:50 am - 2:30 pmPHL Philadelphia-SOF Sofia

20h 40m3 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl Madrid Barajas

3:50 pm - 2:30 pmSOF Sofia-PHL Philadelphia

29h 40m3 stops Istanbul Cairo Doha Hamad Intl

$1,707Multiple Airlines

Tue, Sep 22 - Thu, Sep 24

10:05 am - 3:00 pmPHL Philadelphia-SOF Sofia

21h 55m3 stops Montreal Pierre Elliott Trudeau Intl Brussels Bruxelles-National Budapest Ferenc Liszt Intl

5:45 am - 9:32 pmSOF Sofia-PHL Philadelphia

22h 47m2 stops London Stansted Montreal Pierre Elliott Trudeau Intl

$2,093Multiple Airlines

Thu, Sep 24 - Sun, Oct 4

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Lufthansa flights from Philadelphia to Bulgaria

Our best Lufthansa deals on Philadelphia to Bulgaria flight tickets

Lufthansa

Oct 27

PHL6:40 pmPhiladelphia

17h 30m

1 stop

SOF6:10 pmSofia

Nov 17

SOF6:25 amSofia

16h 40m

1 stop

PHL4:05 pmPhiladelphia

$607

Lufthansa

Oct 13

PHL5:40 pmPhiladelphia

12h 25m

1 stop

SOF1:05 pmSofia

Dec 3

SOF6:25 amSofia

16h 40m

1 stop

PHL4:05 pmPhiladelphia

$613

Lufthansa

Oct 25

PHL6:40 pmPhiladelphia

17h 30m

1 stop

SOF6:10 pmSofia

Dec 3

SOF6:25 amSofia

16h 40m

1 stop

PHL4:05 pmPhiladelphia

$620

United Airlines flights from Philadelphia to Bulgaria

Our best United Airlines deals on Philadelphia to Bulgaria flight tickets

United Airlines

Oct 27

PHL6:15 amPhiladelphia

34h 40m

2 stops

SOF10:55 pmSofia

Nov 17

SOF6:25 amSofia

16h 40m

1 stop

PHL4:05 pmPhiladelphia

$598

United Airlines

Oct 19

PHL7:00 amPhiladelphia

22h 10m

2 stops

SOF12:10 pmSofia

Dec 4

SOF6:00 amSofia

23h 56m

2 stops

PHL10:56 pmPhiladelphia

$602

United Airlines

Oct 19

PHL5:40 pmPhiladelphia

22h 00m

1 stop

SOF10:40 pmSofia

Dec 3

SOF6:25 amSofia

16h 40m

1 stop

PHL4:05 pmPhiladelphia

$615

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Tue 1/5

6:35 pm-8:10 pm

1 stop18h 35m

Sofia

Mon 1/11

5:15 pm-4:15 pm

1 stop30h 00m

$544

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Tue 1/5

6:00 pm-8:10 pm

2 stops19h 10m

Sofia

Mon 1/11

5:15 pm-4:15 pm

1 stop30h 00m

$548

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Tue 11/3

6:35 pm-8:10 pm

1 stop18h 35m

Sofia

Mon 11/9

5:15 pm-4:15 pm

1 stop30h 00m

$555

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Tue 10/20

6:45 pm-8:30 pm

1 stop18h 45m

Sofia

Wed 12/2

9:05 pm-4:15 pm

1 stop26h 10m

$555

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Tue 10/27

6:15 am-10:55 pm

2 stops34h 40m

Sofia

Tue 11/17

6:25 am-4:05 pm

1 stop16h 40m

$598

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Mon 10/12

6:10 am-11:40 am

2 stops22h 30m

Sofia

Fri 12/4

7:55 am-9:39 pm

2 stops20h 44m

$602

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Mon 10/19

7:00 am-12:10 pm

2 stops22h 10m

Sofia

Fri 12/4

6:00 am-10:56 pm

2 stops23h 56m

$602

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Tue 10/27

6:40 pm-6:10 pm

1 stop17h 30m

Sofia

Tue 11/17

6:25 am-4:05 pm

1 stop16h 40m

$607

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Wed 10/21

5:40 pm-1:25 pm

1 stop12h 45m

Sofia

Thu 12/3

6:25 am-4:05 pm

1 stop16h 40m

$612

Quickest round-trip

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Tue 10/13

5:40 pm-1:05 pm

1 stop12h 25m

Sofia

Thu 12/3

6:25 am-4:05 pm

1 stop16h 40m

$613

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Philadelphia to Bulgaria

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Bulgaria?

If you aren’t able to travel to Bulgaria during the month of November, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $546.

Can stopping save me money on Philadelphia to Bulgaria flights?

You could potentially save up to 40% on your flight if you consider stops on a Philadelphia to Bulgaria flight.

Cheap Philadelphia to Bulgaria flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to Bulgaria

Best Price Found	$328
Fastest flight time	19h 40m
Direct flights	None

The best one-way flight to Bulgaria from Philadelphia in the past 72 hours is $328. The best round-trip flight deal from Philadelphia to Bulgaria found on momondo in the last 72 hours is $544.

The fastest flight from Philadelphia to Bulgaria takes 19h 40m

There are no direct flights from Philadelphia to Bulgaria. There are no popular flight routes from Philadelphia to Bulgaria.

Search flight deals

Frequently asked questions about flying from Philadelphia to Bulgaria

When did momondo last update prices for flights from Philadelphia Airport to Bulgaria?
Prices for flights from Philadelphia Airport to Bulgaria are updated daily.
How many operators does momondo search for flights from Philadelphia Airport to Bulgaria?
As of September 2026, there are 2 operators available to choose from for flights from Philadelphia Airport to Bulgaria.
How old do you have to be to fly from Philadelphia Airport to Bulgaria?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Philadelphia Airport to Bulgaria.
What documentation or ID do you need to fly to Bulgaria?
The travel and health documents you'll need for your trip to Bulgaria may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Bulgaria. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Philadelphia to Bulgaria

Compare and see reviews for airlines that fly from Philadelphia to Bulgaria with momondo

Airline	Rating	Free Cancellation	Price
Lufthansa	PriceFrom $511	Free Cancellation	Rating 6.8 8,236 reviews		Search Lufthansa flights
United Airlines	PriceFrom $540	Free Cancellation	Rating 7.4 10,229 reviews		Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Philadelphia to Bulgaria?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Bulgaria from Philadelphia.

Can I find flights from Philadelphia to Bulgaria with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Philadelphia to Bulgaria flights to just show those with flexible booking policies.

How can momondo help me find flights from Philadelphia to Bulgaria?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Bulgaria from Philadelphia.

I’m not ready to book a flight from Philadelphia to Bulgaria right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Bulgaria, momondo offers a useful price alert feature which will track prices for flights to Bulgaria from Philadelphia and alert you when they change.

An easier way to manage your Bulgaria trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Popular cities in Bulgaria

Flights to Sofiafrom $481

Flights to Varnafrom $679

Flights to Burgasfrom $771

Flights to Plovdivfrom $1,349

Cheap flights from Philadelphia to Bulgaria from $328

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Bulgaria departing on 10/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Philadelphia to Bulgaria

Cheap round-trip flights

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Cheap last minute flights

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Big names and deals

Filter for what you want

Filter for what you want

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Lufthansa flights from Philadelphia to Bulgaria

Our best Lufthansa deals on Philadelphia to Bulgaria flight tickets

United Airlines flights from Philadelphia to Bulgaria

Our best United Airlines deals on Philadelphia to Bulgaria flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Philadelphia to Bulgaria that are best for you.

See travel insights to Bulgaria from

How to get the cheapest flight ticket from Philadelphia to Bulgaria

What is the cheapest month to fly to Bulgaria?

Can stopping save me money on Philadelphia to Bulgaria flights?

What is the cheapest airline that flies from Philadelphia to Bulgaria?

What airlines fly to Bulgaria?

Cheap Philadelphia to Bulgaria flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Philadelphia to Bulgaria

Best airlines flying from Philadelphia to Bulgaria

Compare and see reviews for airlines that fly from Philadelphia to Bulgaria with momondo

Why use momondo?

An easier way to manage your Bulgaria trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Bulgaria

Popular cities in Bulgaria

Popular flights according to clicks in the last 7 days on momondo

Philadelphia flight routes

According to popular flight searches on momondo this year

Bulgaria flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Bulgaria

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Bulgaria

List of cabin classes available on flights landing in Bulgaria. Availability may vary depending on flight origin and airline.

Complete your trip to Bulgaria

Explore popular destinations other users love

According to popular flight searches on momondo this year