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Cheap flights from Philadelphia to Bulgaria from $727

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 8/4. 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
10:05 am - 10:50 pm
PHL
-
SOF
29h 45m
2 stops
United Airlines Logo
6:10 am - 9:43 am
SOF
-
PHL
34h 33m
2 stops
$727United Airlines
Tue, Aug 4 - Thu, Aug 20
United Airlines Logo
9:30 am - 12:10 pm
PHL
-
SOF
19h 40m
2 stops
United Airlines Logo
6:30 am - 4:05 pm
SOF
-
PHL
16h 35m
1 stop
$736United Airlines
Sun, Sep 13 - Thu, Oct 1
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
$738Lufthansa
Mon, Aug 17 - Wed, Sep 2
United Airlines Logo
9:30 am - 12:10 pm
PHL
-
SOF
19h 40m
2 stops
United Airlines Logo
6:30 am - 2:47 pm
SOF
-
PHL
15h 17m
2 stops
$739United Airlines
Sun, Sep 13 - Thu, Oct 1
United Airlines Logo
10:15 am - 1:10 pm
PHL
-
SOF
19h 55m
2 stops
United Airlines Logo
6:25 am - 4:05 pm
SOF
-
PHL
16h 40m
1 stop
$740United Airlines
Sun, Dec 6 - Thu, Dec 10
Multiple Airlines Logo
7:00 am - 12:10 pm
PHL
-
SOF
22h 10m
2 stops
Multiple Airlines Logo
8:00 am - 4:05 pm
SOF
-
PHL
15h 05m
2 stops
$744Multiple Airlines
Mon, Aug 17 - Wed, Sep 2
Air Canada Logo
3:20 pm - 6:20 pm
PHL
-
SOF
20h 00m
2 stops
Air Canada Logo
2:05 pm - 4:21 pm
SOF
-
PHL
33h 16m
2 stops
$747Air Canada
Sun, Dec 6 - Thu, Dec 10
SWISS Logo
10:34 am - 10:20 am
PHL
-
SOF
40h 46m
2 stops
SWISS Logo
3:40 pm - 4:05 pm
SOF
-
PHL
55h 25m
2 stops
$751SWISS
Mon, Aug 17 - Mon, Aug 24
Multiple Airlines Logo
10:50 am - 7:45 pm
PHL
-
VAR
25h 55m
2 stops
Multiple Airlines Logo
7:30 pm - 4:05 pm
VAR
-
PHL
27h 35m
1 stop
$804Multiple Airlines
Wed, Sep 23 - Wed, Oct 7
Lufthansa Logo
5:40 pm - 11:45 am
PHL
-
BOJ
35h 05m
2 stops
Lufthansa Logo
9:10 am - 4:05 pm
BOJ
-
PHL
13h 55m
1 stop
$1,080Lufthansa
Mon, Jul 13 - Sun, Jul 19

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SWISS flights from Philadelphia to Bulgaria

Our best SWISS deals on Philadelphia to Bulgaria flight tickets
SWISS
Aug 17
PHL10:34 amPhiladelphia
40h 46m
2 stops
SOF10:20 amSofia
Aug 24
SOF3:40 pmSofia
55h 25m
2 stops
PHL4:05 pmPhiladelphia
$751
SWISS
Sep 6
PHL10:34 amPhiladelphia
21h 21m
2 stops
SOF2:55 pmSofia
Sep 14
SOF3:40 pmSofia
33h 14m
2 stops
PHL5:54 pmPhiladelphia
$754
SWISS
Jul 13
PHL5:40 pmPhiladelphia
33h 40m
2 stops
SOF10:20 amSofia
Jul 27
SOF3:40 pmSofia
33h 12m
2 stops
PHL5:52 pmPhiladelphia
$875

Austrian Airlines flights from Philadelphia to Bulgaria

Our best Austrian Airlines deals on Philadelphia to Bulgaria flight tickets
Austrian Airlines
Aug 19
PHL5:40 pmPhiladelphia
14h 40m
2 stops
SOF3:20 pmSofia
Aug 25
SOF8:00 amSofia
39h 05m
2 stops
PHL4:05 pmPhiladelphia
$771
Austrian Airlines
Aug 13
PHL5:40 pmPhiladelphia
14h 40m
2 stops
SOF3:20 pmSofia
Aug 24
SOF6:55 pmSofia
28h 10m
2 stops
PHL4:05 pmPhiladelphia
$821
Austrian Airlines
Jul 19
PHL5:40 pmPhiladelphia
23h 15m
2 stops
SOF11:55 pmSofia
Aug 12
SOF4:05 pmSofia
31h 00m
2 stops
PHL4:05 pmPhiladelphia
$833

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 2, 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

Tue 8/4

10:05 am-10:50 pm

2 stops29h 45m

Sofia

Thu 8/20

6:10 am-9:43 am

2 stops34h 33m

$727

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Sun 9/13

9:30 am-12:10 pm

2 stops19h 40m

Sofia

Thu 10/1

6:30 am-4:05 pm

1 stop16h 35m

$736
Quickest round-trip

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Mon 8/17

5:40 pm-1:25 pm

1 stop12h 45m

Sofia

Wed 9/2

6:20 am-4:05 pm

1 stop16h 45m

$738

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Sun 9/13

9:30 am-12:10 pm

2 stops19h 40m

Sofia

Thu 10/1

6:30 am-2:47 pm

2 stops15h 17m

$739

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Sun 12/6

10:15 am-1:10 pm

2 stops19h 55m

Sofia

Thu 12/10

6:25 am-4:05 pm

1 stop16h 40m

$740

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Mon 8/17

7:00 am-12:10 pm

2 stops22h 10m

Sofia

Wed 9/2

8:00 am-4:05 pm

2 stops15h 05m

$744

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Sun 12/6

3:20 pm-6:20 pm

2 stops20h 00m

Sofia

Thu 12/10

2:05 pm-4:21 pm

2 stops33h 16m

$747

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Mon 8/17

10:34 am-10:20 am

2 stops40h 46m

Sofia

Mon 8/24

3:40 pm-4:05 pm

2 stops55h 25m

$751

PhiladelphiaVarna

PHL - VAR

PHLVAR

Philadelphia

Wed 9/23

10:50 am-7:45 pm

2 stops25h 55m

Varna

Wed 10/7

7:30 pm-4:05 pm

1 stop27h 35m

$804

PhiladelphiaBurgas

PHL - BOJ

PHLBOJ

Philadelphia

Mon 7/13

5:40 pm-11:45 am

2 stops35h 05m

Bourgas

Sun 7/19

9:10 am-4:05 pm

1 stop13h 55m

$1,080

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 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

12h 35m

Direct flights

None
The fastest flight from Philadelphia to Bulgaria takes 12h 35m
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
8,109 reviews
Search Lufthansa flights
United AirlinesPriceFrom $540Free CancellationRating
7.4
9,913 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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