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Cheap flights from Philadelphia to Bulgaria from $352

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 11/1. 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
1 adult, Economy, 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
1:30 pm - 6:40 pm
PHL
-
SOF
22h 10m
2 stops
United Airlines Logo
6:20 am - 4:05 pm
SOF
-
PHL
16h 45m
1 stop
$706United Airlines
Wed, Aug 12 - Wed, Aug 26
Lufthansa Logo
5:40 pm - 1:25 pm
PHL
-
SOF
12h 45m
1 stop
Lufthansa Logo
6:20 am - 4:05 pm
SOF
-
PHL
16h 45m
1 stop
$708Lufthansa
Wed, Aug 12 - Wed, Aug 26
Multiple Airlines Logo
4:20 pm - 6:40 pm
PHL
-
SOF
43h 20m
2 stops
Multiple Airlines Logo
3:40 pm - 5:54 pm
SOF
-
PHL
33h 14m
2 stops
$709Multiple Airlines
Sat, Aug 8 - Mon, Aug 24
Multiple Airlines Logo
3:25 pm - 6:40 pm
PHL
-
SOF
20h 15m
2 stops
Multiple Airlines Logo
7:00 pm - 4:05 pm
SOF
-
PHL
28h 05m
1 stop
$724Multiple Airlines
Sun, Aug 9 - Wed, Aug 19
Multiple Airlines Logo
3:25 pm - 6:40 pm
PHL
-
SOF
20h 15m
2 stops
Multiple Airlines Logo
7:00 pm - 2:49 pm
SOF
-
PHL
26h 49m
2 stops
$727Multiple Airlines
Sun, Aug 9 - Wed, Aug 19
Multiple Airlines Logo
10:34 am - 10:20 am
PHL
-
SOF
16h 46m
2 stops
Multiple Airlines Logo
8:00 am - 4:05 pm
SOF
-
PHL
15h 05m
2 stops
$734Multiple Airlines
Wed, Aug 12 - Wed, Aug 26
United Airlines Logo
7:40 pm - 6:40 pm
PHL
-
SOF
16h 00m
2 stops
United Airlines Logo
6:10 am - 4:05 pm
SOF
-
PHL
16h 55m
1 stop
$737United Airlines
Sun, Sep 13 - Tue, Sep 29
United Airlines Logo
7:40 pm - 6:40 pm
PHL
-
SOF
16h 00m
2 stops
United Airlines Logo
6:20 am - 9:32 pm
SOF
-
PHL
22h 12m
2 stops
$740United Airlines
Sun, Sep 13 - Fri, Oct 2
United Airlines Logo
5:40 pm - 6:10 pm
PHL
-
SOF
17h 30m
1 stop
United Airlines Logo
6:10 am - 4:05 pm
SOF
-
PHL
16h 55m
1 stop
$744United Airlines
Sun, Sep 13 - Tue, Sep 29
Austrian Airlines Logo
10:50 am - 3:15 pm
PHL
-
VAR
21h 25m
2 stops
Austrian Airlines Logo
4:00 pm - 4:05 pm
VAR
-
PHL
31h 05m
2 stops
$1,136Austrian Airlines
Tue, Sep 22 - Tue, Oct 13

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Lufthansa flights from Philadelphia to Bulgaria

Our best Lufthansa deals on Philadelphia to Bulgaria flight tickets
Lufthansa
Aug 12
PHL5:40 pmPhiladelphia
12h 45m
1 stop
SOF1:25 pmSofia
Aug 26
SOF6:20 amSofia
16h 45m
1 stop
PHL4:05 pmPhiladelphia
$708
Lufthansa
Aug 26
PHL5:40 pmPhiladelphia
12h 45m
1 stop
SOF1:25 pmSofia
Sep 9
SOF1:50 pmSofia
33h 15m
1 stop
PHL4:05 pmPhiladelphia
$763
Lufthansa
Sep 15
PHL5:40 pmPhiladelphia
12h 25m
1 stop
SOF1:05 pmSofia
Oct 1
SOF6:30 amSofia
16h 35m
1 stop
PHL4:05 pmPhiladelphia
$774

United Airlines flights from Philadelphia to Bulgaria

Our best United Airlines deals on Philadelphia to Bulgaria flight tickets
United Airlines
Aug 12
PHL1:30 pmPhiladelphia
22h 10m
2 stops
SOF6:40 pmSofia
Aug 26
SOF6:20 amSofia
16h 45m
1 stop
PHL4:05 pmPhiladelphia
$706
United Airlines
Sep 13
PHL7:40 pmPhiladelphia
16h 00m
2 stops
SOF6:40 pmSofia
Sep 29
SOF6:10 amSofia
16h 55m
1 stop
PHL4:05 pmPhiladelphia
$737
United Airlines
Sep 13
PHL7:40 pmPhiladelphia
16h 00m
2 stops
SOF6:40 pmSofia
Oct 2
SOF6:20 amSofia
22h 12m
2 stops
PHL9:32 pmPhiladelphia
$740

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 July 16, 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

Wed 8/12

1:30 pm-6:40 pm

2 stops22h 10m

Sofia

Wed 8/26

6:20 am-4:05 pm

1 stop16h 45m

$706
Quickest round-trip

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Wed 8/12

5:40 pm-1:25 pm

1 stop12h 45m

Sofia

Wed 8/26

6:20 am-4:05 pm

1 stop16h 45m

$708

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Sat 8/8

4:20 pm-6:40 pm

2 stops43h 20m

Sofia

Mon 8/24

3:40 pm-5:54 pm

2 stops33h 14m

$709

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Sun 8/9

3:25 pm-6:40 pm

2 stops20h 15m

Sofia

Wed 8/19

7:00 pm-4:05 pm

1 stop28h 05m

$724

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Sun 8/9

3:25 pm-6:40 pm

2 stops20h 15m

Sofia

Wed 8/19

7:00 pm-2:49 pm

2 stops26h 49m

$727

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Wed 8/12

10:34 am-10:20 am

2 stops16h 46m

Sofia

Wed 8/26

8:00 am-4:05 pm

2 stops15h 05m

$734

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Sun 9/13

7:40 pm-6:40 pm

2 stops16h 00m

Sofia

Tue 9/29

6:10 am-4:05 pm

1 stop16h 55m

$737

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Sun 9/13

7:40 pm-6:40 pm

2 stops16h 00m

Sofia

Fri 10/2

6:20 am-9:32 pm

2 stops22h 12m

$740

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Sun 9/13

5:40 pm-6:10 pm

1 stop17h 30m

Sofia

Tue 9/29

6:10 am-4:05 pm

1 stop16h 55m

$744

PhiladelphiaVarna

PHL - VAR

PHLVAR

Philadelphia

Tue 9/22

10:50 am-3:15 pm

2 stops21h 25m

Varna

Tue 10/13

4:00 pm-4:05 pm

2 stops31h 05m

$1,136

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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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 April, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $476.

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

Fastest flight time

18h 20m

Direct flights

None
The fastest flight from Philadelphia to Bulgaria takes 18h 20m
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 $497Free CancellationRating
6.8
8,139 reviews
Search Lufthansa flights
United AirlinesPriceFrom $540Free CancellationRating
7.4
9,993 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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