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Cheap flights from Philadelphia to Bulgaria from $718

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
3:10 pm - 11:15 pm
PHL
-
SOF
25h 05m
2 stops
United Airlines Logo
6:10 am - 9:43 am
SOF
-
PHL
34h 33m
2 stops
$718United Airlines
Tue, Aug 4 - Thu, Aug 20
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
Multiple Airlines Logo
4:20 pm - 6:10 pm
PHL
-
SOF
42h 50m
2 stops
Multiple Airlines Logo
3:40 pm - 4:05 pm
SOF
-
PHL
31h 25m
2 stops
$729Multiple Airlines
Sat, Aug 8 - Mon, Aug 24
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
$739British Airways
Sun, Dec 6 - Wed, Dec 9
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
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
$741United Airlines
Sun, Dec 6 - Thu, Dec 10
Air Canada Logo
3:20 pm - 6:20 pm
PHL
-
SOF
20h 00m
2 stops
Air Canada Logo
2:00 pm - 2:44 pm
SOF
-
PHL
31h 44m
2 stops
$745Air Canada
Sun, Dec 6 - Wed, Dec 9
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
Multiple Airlines Logo
7:45 pm - 6:10 pm
PHL
-
SOF
39h 25m
2 stops
Multiple Airlines Logo
6:55 pm - 4:05 pm
SOF
-
PHL
28h 10m
2 stops
$750Multiple Airlines
Sat, Aug 8 - Mon, Aug 24
Lufthansa Logo
5:40 pm - 8:35 am
PHL
-
VAR
31h 55m
1 stop
Lufthansa Logo
9:30 am - 4:05 pm
VAR
-
PHL
13h 35m
1 stop
$1,545Lufthansa
Thu, Jul 23 - Thu, Jul 30

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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
PHL3:10 pmPhiladelphia
25h 05m
2 stops
SOF11:15 pmSofia
Aug 20
SOF6:10 amSofia
34h 33m
2 stops
PHL9:43 amPhiladelphia
$718
United Airlines
Aug 4
PHL10:05 amPhiladelphia
29h 45m
2 stops
SOF10:50 pmSofia
Aug 20
SOF6:10 amSofia
34h 33m
2 stops
PHL9:43 amPhiladelphia
$727
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
$736

Austrian Airlines flights from Philadelphia to Bulgaria

Our best Austrian Airlines deals on Philadelphia to Bulgaria flight tickets
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
$832
Austrian Airlines
Jul 12
PHL5:40 pmPhiladelphia
23h 15m
2 stops
SOF11:55 pmSofia
Aug 12
SOF6:55 pmSofia
28h 10m
2 stops
PHL4:05 pmPhiladelphia
$833
Austrian Airlines
Jul 12
PHL5:40 pmPhiladelphia
23h 15m
2 stops
SOF11:55 pmSofia
Aug 11
SOF6:55 pmSofia
52h 10m
2 stops
PHL4:05 pmPhiladelphia
$853

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 26, 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

3:10 pm-11:15 pm

2 stops25h 05m

Sofia

Thu 8/20

6:10 am-9:43 am

2 stops34h 33m

$718

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

Sat 8/8

4:20 pm-6:10 pm

2 stops42h 50m

Sofia

Mon 8/24

3:40 pm-4:05 pm

2 stops31h 25m

$729

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

$739
Quickest round-trip

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

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

$741

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

Sun 12/6

3:20 pm-6:20 pm

2 stops20h 00m

Sofia

Wed 12/9

2:00 pm-2:44 pm

2 stops31h 44m

$745

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

Sat 8/8

7:45 pm-6:10 pm

2 stops39h 25m

Sofia

Mon 8/24

6:55 pm-4:05 pm

2 stops28h 10m

$750

PhiladelphiaVarna

PHL - VAR

PHLVAR

Philadelphia

Thu 7/23

5:40 pm-8:35 am

1 stop31h 55m

Varna

Thu 7/30

9:30 am-4:05 pm

1 stop13h 35m

$1,545

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 40m

Direct flights

None
The fastest flight from Philadelphia to Bulgaria takes 12h 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 $497Free CancellationRating
6.8
8,096 reviews
Search Lufthansa flights
United AirlinesPriceFrom $540Free CancellationRating
7.4
9,893 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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