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Cheap flights from Philadelphia to Bulgaria from $441

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 7/14. 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
6:10 am - 6:40 pm
PHL
-
SOF
29h 30m
2 stops
United Airlines Logo
6:10 am - 9:43 pm
SOF
-
PHL
22h 33m
2 stops
$718United Airlines
Tue, Aug 4 - Thu, Aug 20
Multiple Airlines Logo
3:25 pm - 6:40 pm
PHL
-
SOF
20h 15m
2 stops
Multiple Airlines Logo
6:30 am - 2:47 pm
SOF
-
PHL
15h 17m
2 stops
$722Multiple Airlines
Wed, Sep 2 - Thu, Sep 17
United Airlines Logo
10:05 am - 10:50 pm
PHL
-
SOF
29h 45m
2 stops
United Airlines Logo
6:10 am - 9:43 pm
SOF
-
PHL
22h 33m
2 stops
$729United Airlines
Tue, Aug 4 - Thu, Aug 20
Multiple Airlines Logo
10:05 am - 6:40 pm
PHL
-
SOF
25h 35m
2 stops
Multiple Airlines Logo
6:30 am - 4:05 pm
SOF
-
PHL
16h 35m
1 stop
$736Multiple Airlines
Wed, Sep 2 - Thu, Sep 17
British Airways Logo
6:35 pm - 4:20 pm
PHL
-
SOF
14h 45m
1 stop
British Airways Logo
9:00 pm - 4:15 pm
SOF
-
PHL
26h 15m
1 stop
$740British Airways
Sun, Dec 6 - Wed, Dec 9
Lufthansa Logo
5:40 pm - 6:00 pm
PHL
-
SOF
17h 20m
1 stop
Lufthansa Logo
7:25 pm - 4:05 pm
SOF
-
PHL
27h 40m
2 stops
$783Lufthansa
Tue, Jul 7 - Mon, Aug 24
Austrian Airlines Logo
5:40 pm - 11:55 pm
PHL
-
SOF
23h 15m
2 stops
Austrian Airlines Logo
1:40 pm - 4:05 pm
SOF
-
PHL
33h 25m
2 stops
$804Austrian Airlines
Mon, Jul 6 - Mon, Aug 24
United Airlines Logo
10:05 am - 10:50 pm
PHL
-
SOF
29h 45m
2 stops
United Airlines Logo
6:30 am - 5:54 pm
SOF
-
PHL
18h 24m
2 stops
$822United Airlines
Tue, Aug 4 - Thu, Aug 20
Austrian Airlines Logo
5:40 pm - 11:40 am
PHL
-
SOF
35h 00m
2 stops
Austrian Airlines Logo
4:05 pm - 4:05 pm
SOF
-
PHL
55h 00m
2 stops
$824Austrian Airlines
Tue, Jul 7 - Sun, Aug 23
Lufthansa Logo
5:40 pm - 7:15 pm
PHL
-
VAR
18h 35m
1 stop
Lufthansa Logo
4:00 pm - 4:05 pm
VAR
-
PHL
31h 05m
2 stops
$834Lufthansa
Tue, Jul 28 - Tue, Aug 4

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United Airlines flights from Philadelphia to Bulgaria

Our best United Airlines deals on Philadelphia to Bulgaria flight tickets
United Airlines
Aug 4
PHL6:10 amPhiladelphia
29h 30m
2 stops
SOF6:40 pmSofia
Aug 20
SOF6:10 amSofia
22h 33m
2 stops
PHL9:43 pmPhiladelphia
$718
United Airlines
Aug 4
PHL10:05 amPhiladelphia
29h 45m
2 stops
SOF10:50 pmSofia
Aug 20
SOF6:10 amSofia
22h 33m
2 stops
PHL9:43 pmPhiladelphia
$729
United Airlines
Aug 4
PHL10:05 amPhiladelphia
29h 45m
2 stops
SOF10:50 pmSofia
Aug 20
SOF6:30 amSofia
18h 24m
2 stops
PHL5:54 pmPhiladelphia
$822

Lufthansa flights from Philadelphia to Bulgaria

Our best Lufthansa deals on Philadelphia to Bulgaria flight tickets
Lufthansa
Jul 7
PHL5:40 pmPhiladelphia
17h 20m
1 stop
SOF6:00 pmSofia
Aug 24
SOF7:25 pmSofia
27h 40m
2 stops
PHL4:05 pmPhiladelphia
$783
Lufthansa
Jul 28
PHL5:40 pmPhiladelphia
18h 35m
1 stop
VAR7:15 pmVarna
Aug 4
VAR4:00 pmVarna
31h 05m
2 stops
PHL4:05 pmPhiladelphia
$834
Lufthansa
Jul 9
PHL5:40 pmPhiladelphia
22h 00m
1 stop
SOF10:40 pmSofia
Aug 24
SOF7:25 pmSofia
27h 40m
2 stops
PHL4:05 pmPhiladelphia
$843

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 June 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

Tue 8/4

6:10 am-6:40 pm

2 stops29h 30m

Sofia

Thu 8/20

6:10 am-9:43 pm

2 stops22h 33m

$718
Quickest round-trip

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Wed 9/2

3:25 pm-6:40 pm

2 stops20h 15m

Sofia

Thu 9/17

6:30 am-2:47 pm

2 stops15h 17m

$722

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 pm

2 stops22h 33m

$729

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Wed 9/2

10:05 am-6:40 pm

2 stops25h 35m

Sofia

Thu 9/17

6:30 am-4:05 pm

1 stop16h 35m

$736

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Sun 12/6

6:35 pm-4:20 pm

1 stop14h 45m

Sofia

Wed 12/9

9:00 pm-4:15 pm

1 stop26h 15m

$740

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Tue 7/7

5:40 pm-6:00 pm

1 stop17h 20m

Sofia

Mon 8/24

7:25 pm-4:05 pm

2 stops27h 40m

$783

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Mon 7/6

5:40 pm-11:55 pm

2 stops23h 15m

Sofia

Mon 8/24

1:40 pm-4:05 pm

2 stops33h 25m

$804

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Tue 8/4

10:05 am-10:50 pm

2 stops29h 45m

Sofia

Thu 8/20

6:30 am-5:54 pm

2 stops18h 24m

$822

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Tue 7/7

5:40 pm-11:40 am

2 stops35h 00m

Sofia

Sun 8/23

4:05 pm-4:05 pm

2 stops55h 00m

$824

PhiladelphiaVarna

PHL - VAR

PHLVAR

Philadelphia

Tue 7/28

5:40 pm-7:15 pm

1 stop18h 35m

Varna

Tue 8/4

4:00 pm-4:05 pm

2 stops31h 05m

$834

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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

14h 45m

Direct flights

None
The fastest flight from Philadelphia to Bulgaria takes 14h 45m
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 $487Free CancellationRating
6.8
8,066 reviews
Search Lufthansa flights
United AirlinesPriceFrom $540Free CancellationRating
7.4
9,843 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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