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Cheap flights from Philadelphia to Bulgaria from $729

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Bulgaria departing on 4/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Philadelphia to Bulgaria

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:55 pm - 6:00 pm
PHL
-
SOF
40h 05m
2 stops
United Airlines Logo
6:20 am - 12:59 am
SOF
-
PHL
25h 39m
2 stops
$729United Airlines
Mon, Apr 27 - Wed, May 6
United Airlines Logo
10:38 am - 10:40 pm
PHL
-
SOF
29h 02m
2 stops
United Airlines Logo
6:20 am - 12:59 am
SOF
-
PHL
25h 39m
2 stops
$779United Airlines
Thu, Apr 30 - Wed, May 6
United Airlines Logo
6:55 pm - 6:00 pm
PHL
-
SOF
40h 05m
2 stops
United Airlines Logo
6:10 am - 12:59 am
SOF
-
PHL
25h 49m
2 stops
$781United Airlines
Mon, Apr 27 - Sun, May 3
United Airlines Logo
10:28 am - 11:15 pm
PHL
-
SOF
29h 47m
2 stops
United Airlines Logo
2:10 pm - 2:47 pm
SOF
-
PHL
31h 37m
2 stops
$791United Airlines
Thu, Sep 10 - Tue, Sep 15
United Airlines Logo
10:28 am - 6:40 pm
PHL
-
SOF
25h 12m
2 stops
United Airlines Logo
6:20 am - 4:05 pm
SOF
-
PHL
16h 45m
1 stop
$798United Airlines
Wed, Sep 9 - Sun, Sep 27
United Airlines Logo
5:40 pm - 6:25 pm
PHL
-
SOF
17h 45m
1 stop
United Airlines Logo
2:10 pm - 2:47 pm
SOF
-
PHL
31h 37m
2 stops
$799United Airlines
Thu, Sep 10 - Tue, Sep 15
United Airlines Logo
10:28 am - 6:40 pm
PHL
-
SOF
25h 12m
2 stops
United Airlines Logo
6:20 am - 9:45 am
SOF
-
PHL
34h 25m
2 stops
$806United Airlines
Wed, Sep 9 - Sun, Sep 27
United Airlines Logo
10:33 am - 11:15 pm
PHL
-
SOF
29h 42m
2 stops
United Airlines Logo
6:10 am - 9:48 am
SOF
-
PHL
34h 38m
2 stops
$810United Airlines
Tue, Apr 28 - Tue, May 5
United Airlines Logo
1:27 pm - 6:40 pm
PHL
-
SOF
22h 13m
2 stops
United Airlines Logo
6:20 am - 12:59 am
SOF
-
PHL
25h 39m
2 stops
$812United Airlines
Sun, Apr 26 - Wed, May 6
British Airways Logo
1:55 pm - 1:25 pm
PHL
-
SOF
40h 30m
2 stops
British Airways Logo
9:25 pm - 4:40 pm
SOF
-
PHL
26h 15m
1 stop
$813British Airways
Wed, Sep 9 - Wed, Sep 16

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United Airlines flights from Philadelphia to Bulgaria

Our best United Airlines deals on Philadelphia to Bulgaria flight tickets
United Airlines
Apr 27
PHL6:55 pmPhiladelphia
40h 05m
2 stops
SOF6:00 pmSofia
May 6
SOF6:20 amSofia
25h 39m
2 stops
PHL12:59 amPhiladelphia
$729
United Airlines
Apr 30
PHL10:38 amPhiladelphia
29h 02m
2 stops
SOF10:40 pmSofia
May 6
SOF6:20 amSofia
25h 39m
2 stops
PHL12:59 amPhiladelphia
$779
United Airlines
Apr 27
PHL6:55 pmPhiladelphia
40h 05m
2 stops
SOF6:00 pmSofia
May 3
SOF6:10 amSofia
25h 49m
2 stops
PHL12:59 amPhiladelphia
$781

Air Canada flights from Philadelphia to Bulgaria

Our best Air Canada deals on Philadelphia to Bulgaria flight tickets
Air Canada
Apr 26
PHL3:30 pmPhiladelphia
20h 10m
2 stops
SOF6:40 pmSofia
May 7
SOF6:30 amSofia
15h 18m
2 stops
PHL2:48 pmPhiladelphia
$899
Air Canada
Apr 29
PHL9:15 amPhiladelphia
19h 55m
2 stops
SOF12:10 pmSofia
May 7
SOF6:30 amSofia
22h 03m
2 stops
PHL9:33 pmPhiladelphia
$904
Air Canada
Apr 28
PHL9:15 amPhiladelphia
25h 45m
2 stops
SOF6:00 pmSofia
May 7
SOF6:30 amSofia
15h 18m
2 stops
PHL2:48 pmPhiladelphia
$916

momondo 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, momondo users made 832,500 searches. Data last updated April 15, 2026.
Use the filters below to find and compare flights from Philadelphia to Bulgaria that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Mon 4/27

6:55 pm-6:00 pm

2 stops40h 05m

Sofia

Wed 5/6

6:20 am-12:59 am

2 stops25h 39m

$729

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Thu 4/30

10:38 am-10:40 pm

2 stops29h 02m

Sofia

Wed 5/6

6:20 am-12:59 am

2 stops25h 39m

$779

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Mon 4/27

6:55 pm-6:00 pm

2 stops40h 05m

Sofia

Sun 5/3

6:10 am-12:59 am

2 stops25h 49m

$781

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Thu 9/10

10:28 am-11:15 pm

2 stops29h 47m

Sofia

Tue 9/15

2:10 pm-2:47 pm

2 stops31h 37m

$791
Quickest round-trip

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Wed 9/9

10:28 am-6:40 pm

2 stops25h 12m

Sofia

Sun 9/27

6:20 am-4:05 pm

1 stop16h 45m

$798

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Thu 9/10

5:40 pm-6:25 pm

1 stop17h 45m

Sofia

Tue 9/15

2:10 pm-2:47 pm

2 stops31h 37m

$799

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Wed 9/9

10:28 am-6:40 pm

2 stops25h 12m

Sofia

Sun 9/27

6:20 am-9:45 am

2 stops34h 25m

$806

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Tue 4/28

10:33 am-11:15 pm

2 stops29h 42m

Sofia

Tue 5/5

6:10 am-9:48 am

2 stops34h 38m

$810

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Sun 4/26

1:27 pm-6:40 pm

2 stops22h 13m

Sofia

Wed 5/6

6:20 am-12:59 am

2 stops25h 39m

$812

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Wed 9/9

1:55 pm-1:25 pm

2 stops40h 30m

Sofia

Wed 9/16

9:25 pm-4:40 pm

1 stop26h 15m

$813

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Bulgaria from

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

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 4% 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

Fastest flight time

17h 40m

Direct flights

None
The fastest flight from Philadelphia to Bulgaria takes 17h 40m
There are no direct flights from Philadelphia to Bulgaria. There are no popular flight routes from Philadelphia to Bulgaria.
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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?

  • 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
LufthansaPriceFrom $511Free CancellationRating
6.8
7,927 reviews
Search Lufthansa flights
United AirlinesPriceFrom $540Free CancellationRating
7.4
9,589 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.

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