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Cheap flights from Philadelphia to Bulgaria from $456

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 2/3. 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

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Find the cheapest flights from Philadelphia to Bulgaria

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
4:05 pm - 10:45 pm
PHL
-
SOF
23h 40m2 stops
Multiple Airlines Logo
2:15 pm - 3:24 pm
SOF
-
PHL
32h 09m2 stops
$456Multiple Airlines
Tue, Feb 3 - Tue, Feb 10
Multiple Airlines Logo
4:05 pm - 6:20 pm
PHL
-
SOF
19h 15m2 stops
Multiple Airlines Logo
2:15 pm - 10:46 pm
SOF
-
PHL
15h 31m2 stops
$465Multiple Airlines
Tue, Feb 3 - Tue, Feb 10
Multiple Airlines Logo
3:30 pm - 6:40 pm
PHL
-
SOF
20h 10m2 stops
Multiple Airlines Logo
6:10 am - 4:00 pm
SOF
-
PHL
16h 50m1 stop
$485Multiple Airlines
Tue, Mar 31 - Tue, Apr 7
Lufthansa Logo
5:35 pm - 6:00 pm
PHL
-
SOF
17h 25m1 stop
Lufthansa Logo
6:10 am - 4:00 pm
SOF
-
PHL
16h 50m1 stop
$490Lufthansa
Tue, Mar 31 - Tue, Apr 7
United Airlines Logo
3:01 pm - 1:15 pm
PHL
-
SOF
15h 14m2 stops
United Airlines Logo
2:00 pm - 9:37 am
SOF
-
PHL
26h 37m3 stops
$503United Airlines
Tue, Feb 3 - Tue, Feb 10
SWISS Logo
1:10 pm - 3:15 pm
PHL
-
SOF
43h 05m3 stops
SWISS Logo
2:00 pm - 9:36 pm
SOF
-
PHL
38h 36m3 stops
$531SWISS
Tue, Feb 3 - Tue, Feb 10
United Airlines Logo
7:45 pm - 6:20 pm
PHL
-
SOF
16h 35m2 stops
United Airlines Logo
6:00 am - 5:05 pm
SOF
-
PHL
17h 05m1 stop
$536United Airlines
Fri, Mar 20 - Tue, Mar 24
United Airlines Logo
7:45 pm - 10:45 pm
PHL
-
SOF
21h 00m2 stops
United Airlines Logo
6:00 am - 5:05 pm
SOF
-
PHL
17h 05m1 stop
$537United Airlines
Fri, Mar 20 - Tue, Mar 24
United Airlines Logo
7:45 pm - 6:20 pm
PHL
-
SOF
16h 35m2 stops
United Airlines Logo
6:00 am - 9:47 am
SOF
-
PHL
33h 47m2 stops
$547United Airlines
Fri, Mar 20 - Tue, Mar 24
Multiple Airlines Logo
11:22 am - 1:55 pm
PHL
-
SOF
19h 33m2 stops
Multiple Airlines Logo
7:00 am - 6:52 pm
SOF
-
PHL
18h 52m2 stops
$595Multiple Airlines
Fri, Feb 6 - Sun, Feb 15

Lufthansa flights from Philadelphia to Bulgaria

Our best Lufthansa deals on Philadelphia to Bulgaria flight tickets
Lufthansa
Mar 31
PHL5:35 pmPhiladelphia
17h 25m
1 stop
SOF6:00 pmSofia
Apr 7
SOF6:10 amSofia
16h 50m
1 stop
PHL4:00 pmPhiladelphia
$490
Find similar
Lufthansa
May 22
PHL5:35 pmPhiladelphia
12h 30m
1 stop
SOF1:05 pmSofia
Jun 7
SOF6:20 amSofia
16h 40m
1 stop
PHL4:00 pmPhiladelphia
$888
Find similar
Lufthansa
Jun 19
PHL5:35 pmPhiladelphia
12h 30m
1 stop
SOF1:05 pmSofia
Aug 24
SOF7:00 pmSofia
28h 00m
1 stop
PHL4:00 pmPhiladelphia
$997
Find similar

United Airlines flights from Philadelphia to Bulgaria

Our best United Airlines deals on Philadelphia to Bulgaria flight tickets
United Airlines
Feb 3
PHL3:01 pmPhiladelphia
15h 14m
2 stops
SOF1:15 pmSofia
Feb 10
SOF2:00 pmSofia
26h 37m
3 stops
PHL9:37 amPhiladelphia
$503
Find similar
United Airlines
Mar 20
PHL7:45 pmPhiladelphia
16h 35m
2 stops
SOF6:20 pmSofia
Mar 24
SOF6:00 amSofia
17h 05m
1 stop
PHL5:05 pmPhiladelphia
$536
Find similar
United Airlines
Mar 20
PHL7:45 pmPhiladelphia
21h 00m
2 stops
SOF10:45 pmSofia
Mar 24
SOF6:00 amSofia
17h 05m
1 stop
PHL5:05 pmPhiladelphia
$537
Find similar

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 December 21, 2025.
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

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Tue 2/3

4:05 pm-10:45 pm

2 stops23h 40m

Sofia

Tue 2/10

2:15 pm-3:24 pm

2 stops32h 09m

$456

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Tue 2/3

4:05 pm-6:20 pm

2 stops19h 15m

Sofia

Tue 2/10

2:15 pm-10:46 pm

2 stops15h 31m

$465

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Tue 3/31

3:30 pm-6:40 pm

2 stops20h 10m

Sofia

Tue 4/7

6:10 am-4:00 pm

1 stop16h 50m

$485

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Tue 3/31

5:35 pm-6:00 pm

1 stop17h 25m

Sofia

Tue 4/7

6:10 am-4:00 pm

1 stop16h 50m

$490

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Tue 2/3

3:01 pm-1:15 pm

2 stops15h 14m

Sofia

Tue 2/10

2:00 pm-9:37 am

3 stops26h 37m

$503

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Tue 2/3

1:10 pm-3:15 pm

3 stops43h 05m

Sofia

Tue 2/10

2:00 pm-9:36 pm

3 stops38h 36m

$531

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Fri 3/20

7:45 pm-6:20 pm

2 stops16h 35m

Sofia

Tue 3/24

6:00 am-5:05 pm

1 stop17h 05m

$536

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Fri 3/20

7:45 pm-10:45 pm

2 stops21h 00m

Sofia

Tue 3/24

6:00 am-5:05 pm

1 stop17h 05m

$537

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Fri 3/20

7:45 pm-6:20 pm

2 stops16h 35m

Sofia

Tue 3/24

6:00 am-9:47 am

2 stops33h 47m

$547

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Fri 2/6

11:22 am-1:55 pm

2 stops19h 33m

Sofia

Sun 2/15

7:00 am-6:52 pm

2 stops18h 52m

$595

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 October, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $540.

What is the cheapest day to depart on your flight to Bulgaria?

The cheapest day to depart from Philadelphia to Bulgaria is on a Tuesday when prices can be found for as low as $741. On the other hand, Saturday is the most expensive day to depart from Philadelphia because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,491.

What is the cheapest time of day to depart on your flight to Bulgaria?

In the evening is the cheapest time of day to fly from Philadelphia to Bulgaria when you can find flight prices for as low as $838. Flying to Bulgaria in the evening is an ideal time because this is during off-peak travel hours. Flights to Bulgaria are more costly in the morning, with an average ticket price of $1,318. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on Philadelphia to Bulgaria flights?

You could potentially save up to 8% 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

19h 15m

Direct flights

None
The fastest flight from Philadelphia to Bulgaria takes 19h 15m
There are no direct flights from Philadelphia to Bulgaria. There are no popular flight routes from Philadelphia to Bulgaria.
Search flight deals

  • 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
7,644 reviews
Search Lufthansa flights
United AirlinesPriceFrom $540Free CancellationRating
7.4
9,102 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

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