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

SWISS is the most popular carrier 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.

$501 Cheap Flights from Philadelphia to Bulgaria in 2026

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 - 4:20 pmPHL Philadelphia-SOF Sofia

14h 45m1 stop London Heathrow

5:15 pm - 8:10 pmSOF Sofia-PHL Philadelphia

33h 55m2 stops London Heathrow Chicago O'Hare Intl

$571British Airways

Sun, Feb 7 - Mon, Feb 22

6:50 pm - 4:20 pmPHL Philadelphia-SOF Sofia

14h 30m2 stops Boston Logan Intl London Heathrow

5:15 pm - 9:10 pmSOF Sofia-PHL Philadelphia

34h 55m2 stops London Heathrow Chicago O'Hare Intl

$575British Airways

Sun, Feb 7 - Mon, Feb 22

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

18h 35m1 stop London Heathrow

7:45 pm - 4:15 pmSOF Sofia-PHL Philadelphia

27h 30m1 stop London Heathrow

$587British Airways

Tue, Nov 10 - Sun, Nov 15

6:37 pm - 8:10 pmPHL Philadelphia-SOF Sofia

18h 33m2 stops Chicago O'Hare Intl London Heathrow

7:45 pm - 4:15 pmSOF Sofia-PHL Philadelphia

27h 30m1 stop London Heathrow

$592British Airways

Tue, Nov 10 - Sun, Nov 15

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

18h 00m2 stops Washington, D.C. Dulles Intl Vienna Intl

8:00 am - 9:29 pmSOF Sofia-PHL Philadelphia

20h 29m2 stops Vienna Intl Chicago O'Hare Intl

$662United Airlines

Mon, Sep 28 - Tue, Oct 20

5:40 pm - 6:00 pmPHL Philadelphia-SOF Sofia

17h 20m1 stop Frankfurt am Main

6:10 am - 4:05 pmSOF Sofia-PHL Philadelphia

16h 55m1 stop Frankfurt am Main

$663Lufthansa

Mon, Sep 28 - Tue, Oct 20

5:40 pm - 10:40 pmPHL Philadelphia-SOF Sofia

22h 00m1 stop Frankfurt am Main

8:00 am - 7:24 pmSOF Sofia-PHL Philadelphia

18h 24m2 stops Vienna Intl Chicago O'Hare Intl

$676United Airlines

Mon, Sep 28 - Tue, Oct 20

9:34 am - 12:10 pmPHL Philadelphia-SOF Sofia

19h 36m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

7:55 am - 11:10 pmSOF Sofia-PHL Philadelphia

21h 15m2 stops Vienna Intl Chicago O'Hare Intl

$678United Airlines

Thu, Oct 15 - Fri, Oct 30

5:40 pm - 6:25 pmPHL Philadelphia-SOF Sofia

17h 45m1 stop Frankfurt am Main

7:00 pm - 5:05 pmSOF Sofia-PHL Philadelphia

28h 05m1 stop Frankfurt am Main

$731Lufthansa

Thu, Oct 15 - Sat, Oct 31

5:40 pm - 6:00 pmPHL Philadelphia-SOF Sofia

17h 20m1 stop Frankfurt am Main

6:10 am - 4:05 pmSOF Sofia-PHL Philadelphia

16h 55m1 stop Frankfurt am Main

$773Lufthansa

Mon, Sep 28 - Tue, Oct 20

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Austrian Airlines flights from Philadelphia to Bulgaria

Our best Austrian Airlines deals on Philadelphia to Bulgaria flight tickets

Austrian Airlines

Oct 11

PHL7:00 amPhiladelphia

28h 10m

2 stops

SOF6:10 pmSofia

Oct 18

SOF6:55 pmSofia

28h 10m

2 stops

PHL4:05 pmPhiladelphia

$693

Austrian Airlines

Oct 15

PHL7:00 amPhiladelphia

28h 10m

2 stops

SOF6:10 pmSofia

Oct 31

SOF6:15 pmSofia

28h 50m

2 stops

PHL5:05 pmPhiladelphia

$711

Austrian Airlines

Oct 11

PHL7:00 amPhiladelphia

28h 10m

2 stops

SOF6:10 pmSofia

Oct 18

SOF6:55 pmSofia

28h 10m

2 stops

PHL4:05 pmPhiladelphia

$819

British Airways flights from Philadelphia to Bulgaria

Our best British Airways deals on Philadelphia to Bulgaria flight tickets

British Airways

Feb 7

PHL6:35 pmPhiladelphia

14h 45m

1 stop

SOF4:20 pmSofia

Feb 22

SOF5:15 pmSofia

33h 55m

2 stops

PHL8:10 pmPhiladelphia

$571

British Airways

Feb 7

PHL6:50 pmPhiladelphia

14h 30m

2 stops

SOF4:20 pmSofia

Feb 22

SOF5:15 pmSofia

34h 55m

2 stops

PHL9:10 pmPhiladelphia

$575

British Airways

Nov 10

PHL6:35 pmPhiladelphia

18h 35m

1 stop

SOF8:10 pmSofia

Nov 15

SOF7:45 pmSofia

27h 30m

1 stop

PHL4:15 pmPhiladelphia

$587

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Sun 2/7

6:35 pm-4:20 pm

1 stop14h 45m

Sofia

Mon 2/22

5:15 pm-8:10 pm

2 stops33h 55m

$571

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Sun 2/7

6:50 pm-4:20 pm

2 stops14h 30m

Sofia

Mon 2/22

5:15 pm-9:10 pm

2 stops34h 55m

$575

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Tue 11/10

6:35 pm-8:10 pm

1 stop18h 35m

Sofia

Sun 11/15

7:45 pm-4:15 pm

1 stop27h 30m

$587

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Tue 11/10

6:37 pm-8:10 pm

2 stops18h 33m

Sofia

Sun 11/15

7:45 pm-4:15 pm

1 stop27h 30m

$592

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Mon 9/28

10:40 am-11:40 am

2 stops18h 00m

Sofia

Tue 10/20

8:00 am-9:29 pm

2 stops20h 29m

$662

Quickest round-trip

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Mon 9/28

5:40 pm-6:00 pm

1 stop17h 20m

Sofia

Tue 10/20

6:10 am-4:05 pm

1 stop16h 55m

$663

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Mon 9/28

5:40 pm-10:40 pm

1 stop22h 00m

Sofia

Tue 10/20

8:00 am-7:24 pm

2 stops18h 24m

$676

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Thu 10/15

9:34 am-12:10 pm

2 stops19h 36m

Sofia

Fri 10/30

7:55 am-11:10 pm

2 stops21h 15m

$678

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Thu 10/15

5:40 pm-6:25 pm

1 stop17h 45m

Sofia

Sat 10/31

7:00 pm-5:05 pm

1 stop28h 05m

$731

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Mon 9/28

5:40 pm-6:00 pm

1 stop17h 20m

Sofia

Tue 10/20

6:10 am-4:05 pm

1 stop16h 55m

$773

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 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	$501
Fastest flight time	14h 35m
Direct flights	None

The best one-way flight to Bulgaria from Philadelphia in the past 72 hours is $501. The best round-trip flight deal from Philadelphia to Bulgaria found on momondo in the last 72 hours is $571.

The fastest flight from Philadelphia to Bulgaria takes 14h 35m

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 8,218 reviews		Search Lufthansa flights
United Airlines	PriceFrom $540	Free Cancellation	Rating 7.4 10,204 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 $544

Flights to Varnafrom $701

Flights to Burgasfrom $869

Flights to Plovdivfrom $1,338

Cheap flights from Philadelphia to Bulgaria from $501

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 11/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Austrian Airlines flights from Philadelphia to Bulgaria

Our best Austrian Airlines deals on Philadelphia to Bulgaria flight tickets

British Airways flights from Philadelphia to Bulgaria

Our best British Airways deals on Philadelphia to Bulgaria flight tickets

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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