How do I get Price Alerts for flights from Sofia to Pennsylvania?

Confirm your travel details to search for the latest offers for flights from Sofia to Pennsylvania . While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

How can I save money on flights from Sofia to Pennsylvania with momondo?

With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

How does momondo find its flight prices?

We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

When did momondo last update prices for flights from Sofia Airport to Pennsylvania?

Prices for flights from Sofia Airport to Pennsylvania are updated daily.

How many operators does momondo search for flights from Sofia Airport to Pennsylvania?

As of October 2026, there are 2 operators available to choose from for flights from Sofia Airport to Pennsylvania.

How old do you have to be to fly from Sofia Airport to Pennsylvania?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Sofia Airport to Pennsylvania.

What documentation or ID do you need to fly to Pennsylvania?

The required travel and health documents for your Pennsylvania trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Pennsylvania. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$468 Cheap Flights from Sofia to Pennsylvania in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Sofia to Pennsylvania

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:20 pm - 12:53 amSOF Sofia-PHL Philadelphia

35h 33m2 stops London Stansted Orlando

5:40 pm - 1:40 pmPHL Philadelphia-SOF Sofia

13h 00m1 stop Dublin

$791Multiple Airlines

Tue, Nov 24 - Mon, Nov 30

8:15 pm - 12:35 amSOF Sofia-PHL Philadelphia

35h 20m2 stops London Stansted Orlando

5:40 pm - 1:40 pmPHL Philadelphia-SOF Sofia

13h 00m1 stop Dublin

$802Multiple Airlines

Wed, Nov 18 - Mon, Nov 30

9:15 pm - 8:02 amSOF Sofia-PHL Philadelphia

41h 47m2 stops London Stansted Orlando

5:40 pm - 1:40 pmPHL Philadelphia-SOF Sofia

13h 00m1 stop Dublin

$804Multiple Airlines

Sat, Nov 21 - Mon, Nov 30

6:25 am - 4:05 pmSOF Sofia-PHL Philadelphia

16h 40m1 stop Frankfurt am Main

5:40 pm - 1:25 pmPHL Philadelphia-SOF Sofia

12h 45m1 stop Frankfurt am Main

$805United Airlines

Thu, Nov 19 - Sun, Nov 29

6:25 am - 4:05 pmSOF Sofia-PHL Philadelphia

16h 40m1 stop Frankfurt am Main

5:40 pm - 1:25 pmPHL Philadelphia-SOF Sofia

12h 45m1 stop Frankfurt am Main

$805United Airlines

Sun, Nov 22 - Sun, Nov 29

6:25 am - 4:05 pmSOF Sofia-PHL Philadelphia

16h 40m1 stop Frankfurt am Main

5:40 pm - 1:25 pmPHL Philadelphia-SOF Sofia

12h 45m1 stop Frankfurt am Main

$805Lufthansa

Thu, Nov 5 - Thu, Nov 12

9:15 pm - 8:02 amSOF Sofia-PHL Philadelphia

41h 47m2 stops London Stansted Orlando

5:40 pm - 1:40 pmPHL Philadelphia-SOF Sofia

13h 00m1 stop Dublin

$805Multiple Airlines

Sat, Nov 21 - Mon, Nov 30

6:25 am - 4:05 pmSOF Sofia-PHL Philadelphia

16h 40m1 stop Frankfurt am Main

3:20 pm - 1:25 pmPHL Philadelphia-SOF Sofia

15h 05m2 stops Montreal Pierre Elliott Trudeau Intl Frankfurt am Main

$808United Airlines

Sun, Nov 22 - Sat, Nov 28

6:25 am - 4:05 pmSOF Sofia-PHL Philadelphia

16h 40m1 stop Frankfurt am Main

5:40 pm - 1:25 pmPHL Philadelphia-SOF Sofia

12h 45m1 stop Frankfurt am Main

$822Lufthansa

Sun, Nov 22 - Sun, Nov 29

7:05 pm - 4:05 pmSOF Sofia-PHL Philadelphia

28h 00m2 stops Munich Franz Josef Strauss Frankfurt am Main

5:40 pm - 1:25 pmPHL Philadelphia-SOF Sofia

12h 45m1 stop Frankfurt am Main

$837Lufthansa

Sat, Nov 21 - Sun, Nov 29

Cheap last minute flights

Enter your travel dates to find the best prices.

6:00 am - 2:16 pmSOF Sofia-PHL Philadelphia

38h 16m2 stops Munich Franz Josef Strauss Washington, D.C. Dulles Intl

5:40 pm - 1:25 pmPHL Philadelphia-SOF Sofia

12h 45m1 stop Frankfurt am Main

$825United Airlines

Sun, Oct 25 - Tue, Dec 8

6:00 am - 9:49 amSOF Sofia-PHL Philadelphia

33h 49m2 stops Munich Franz Josef Strauss Washington, D.C. Dulles Intl

6:00 am - 10:55 pmPHL Philadelphia-SOF Sofia

33h 55m2 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss

$852United Airlines

Sun, Oct 25 - Mon, Dec 7

6:00 am - 9:49 amSOF Sofia-PHL Philadelphia

33h 49m2 stops Munich Franz Josef Strauss Washington, D.C. Dulles Intl

10:25 am - 1:15 pmPHL Philadelphia-SOF Sofia

19h 50m2 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss

$852United Airlines

Sun, Oct 25 - Sun, Dec 6

6:00 am - 9:49 amSOF Sofia-PHL Philadelphia

33h 49m2 stops Munich Franz Josef Strauss Washington, D.C. Dulles Intl

6:00 am - 10:55 pmPHL Philadelphia-SOF Sofia

33h 55m2 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss

$852United Airlines

Sun, Oct 25 - Thu, Dec 3

7:25 pm - 5:05 pmSOF Sofia-PHL Philadelphia

28h 40m2 stops Munich Franz Josef Strauss Frankfurt am Main

5:40 pm - 1:25 pmPHL Philadelphia-SOF Sofia

12h 45m1 stop Frankfurt am Main

$908Lufthansa

Sat, Oct 24 - Thu, Dec 10

7:25 pm - 5:05 pmSOF Sofia-PHL Philadelphia

28h 40m2 stops Munich Franz Josef Strauss Frankfurt am Main

5:40 pm - 1:25 pmPHL Philadelphia-SOF Sofia

12h 45m1 stop Frankfurt am Main

$908Lufthansa

Sat, Oct 24 - Sun, Dec 6

7:25 pm - 5:05 pmSOF Sofia-PHL Philadelphia

28h 40m2 stops Munich Franz Josef Strauss Frankfurt am Main

3:20 pm - 11:50 amPHL Philadelphia-SOF Sofia

13h 30m2 stops Montreal Pierre Elliott Trudeau Intl Vienna Intl

$912Multiple Airlines

Sat, Oct 24 - Thu, Dec 10

7:25 pm - 5:05 pmSOF Sofia-PHL Philadelphia

28h 40m2 stops Munich Franz Josef Strauss Frankfurt am Main

3:20 pm - 11:50 amPHL Philadelphia-SOF Sofia

13h 30m2 stops Montreal Pierre Elliott Trudeau Intl Vienna Intl

$912Multiple Airlines

Sat, Oct 24 - Sat, Dec 5

7:25 pm - 5:05 pmSOF Sofia-PHL Philadelphia

28h 40m2 stops Munich Franz Josef Strauss Frankfurt am Main

9:15 am - 1:25 pmPHL Philadelphia-SOF Sofia

21h 10m2 stops Toronto Pearson Intl Frankfurt am Main

$916Multiple Airlines

Sat, Oct 24 - Sun, Dec 6

6:10 am - 4:05 pmSOF Sofia-PHL Philadelphia

16h 55m1 stop Frankfurt am Main

5:40 pm - 1:25 pmPHL Philadelphia-SOF Sofia

12h 45m1 stop Frankfurt am Main

$936Lufthansa

Tue, Oct 20 - Thu, Dec 10

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

British Airways flights from Sofia to Pennsylvania

Our best British Airways deals on Sofia to Pennsylvania flight tickets

British Airways

Nov 30

SOF5:15 pmSofia

30h 00m

1 stop

PHL4:15 pmPhiladelphia

Dec 7

PHL8:00 pmPhiladelphia

41h 10m

2 stops

SOF8:10 pmSofia

$823

British Airways

Nov 29

SOF7:45 pmSofia

25h 00m

1 stop

PHL1:45 pmPhiladelphia

Dec 6

PHL6:35 pmPhiladelphia

14h 45m

1 stop

SOF4:20 pmSofia

$887

British Airways

Nov 15

SOF7:45 pmSofia

30h 35m

1 stop

PIT7:20 pmPittsburgh

Nov 21

PIT5:29 pmPittsburgh

39h 51m

2 stops

SOF4:20 pmSofia

$956

Austrian Airlines flights from Sofia to Pennsylvania

Our best Austrian Airlines deals on Sofia to Pennsylvania flight tickets

Austrian Airlines

Nov 22

SOF7:55 amSofia

21h 51m

2 stops

PHL10:46 pmPhiladelphia

Nov 30

PHL9:15 amPhiladelphia

31h 40m

2 stops

SOF11:55 pmSofia

$839

Austrian Airlines

Nov 22

SOF7:55 amSofia

21h 51m

2 stops

PHL10:46 pmPhiladelphia

Nov 29

PHL5:40 pmPhiladelphia

17h 20m

2 stops

SOF6:00 pmSofia

$855

Austrian Airlines

Dec 19

SOF6:15 pmSofia

28h 50m

2 stops

PHL4:05 pmPhiladelphia

Jan 10

PHL5:40 pmPhiladelphia

17h 20m

2 stops

SOF6:00 pmSofia

$953

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Tue 11/24

8:20 pm-12:53 am

2 stops35h 33m

Philadelphia

Mon 11/30

5:40 pm-1:40 pm

1 stop13h 00m

$791

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Wed 11/18

8:15 pm-12:35 am

2 stops35h 20m

Philadelphia

Mon 11/30

5:40 pm-1:40 pm

1 stop13h 00m

$802

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Sat 11/21

9:15 pm-8:02 am

2 stops41h 47m

Philadelphia

Mon 11/30

5:40 pm-1:40 pm

1 stop13h 00m

$804

Quickest round-trip

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Thu 11/19

6:25 am-4:05 pm

1 stop16h 40m

Philadelphia

Sun 11/29

5:40 pm-1:25 pm

1 stop12h 45m

$805

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Sun 11/22

6:25 am-4:05 pm

1 stop16h 40m

Philadelphia

Sun 11/29

5:40 pm-1:25 pm

1 stop12h 45m

$805

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Thu 11/5

6:25 am-4:05 pm

1 stop16h 40m

Philadelphia

Thu 11/12

5:40 pm-1:25 pm

1 stop12h 45m

$805

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Sat 11/21

9:15 pm-8:02 am

2 stops41h 47m

Philadelphia

Mon 11/30

5:40 pm-1:40 pm

1 stop13h 00m

$805

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Sun 11/22

6:25 am-4:05 pm

1 stop16h 40m

Philadelphia

Sat 11/28

3:20 pm-1:25 pm

2 stops15h 05m

$808

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Sun 11/22

6:25 am-4:05 pm

1 stop16h 40m

Philadelphia

Sun 11/29

5:40 pm-1:25 pm

1 stop12h 45m

$822

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Sat 11/21

7:05 pm-4:05 pm

2 stops28h 00m

Philadelphia

Sun 11/29

5:40 pm-1:25 pm

1 stop12h 45m

$837

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first

Cheap Sofia to Pennsylvania flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Sofia to Pennsylvania

Best Price Found	$468
Fastest flight time	12h 50m
Direct flights	None

The best one-way flight to Pennsylvania from Sofia in the past 72 hours is $468. The best round-trip flight deal from Sofia to Pennsylvania found on momondo in the last 72 hours is $791.

The fastest flight from Sofia to Pennsylvania takes 12h 50m

There are no direct flights from Sofia to Pennsylvania. There are no popular flight routes from Sofia to Pennsylvania.

Search flight deals

Frequently asked questions about flying from Sofia to Pennsylvania

When did momondo last update prices for flights from Sofia Airport to Pennsylvania?
Prices for flights from Sofia Airport to Pennsylvania are updated daily.
How many operators does momondo search for flights from Sofia Airport to Pennsylvania?
As of October 2026, there are 2 operators available to choose from for flights from Sofia Airport to Pennsylvania.
How old do you have to be to fly from Sofia Airport to Pennsylvania?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Sofia Airport to Pennsylvania.
What documentation or ID do you need to fly to Pennsylvania?
The required travel and health documents for your Pennsylvania trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Pennsylvania. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Sofia to Pennsylvania

Compare and see reviews for airlines that fly from Sofia to Pennsylvania with momondo

Airline	Rating	Free Cancellation	Price
Lufthansa	PriceFrom $693	Free Cancellation	Rating 6.8 8,279 reviews		Search Lufthansa flights
United Airlines	PriceFrom $714	Free Cancellation	Rating 7.3 10,388 reviews		Search United Airlines flights

Frequently asked questions about flying from Sofia to Pennsylvania

How do I get Price Alerts for flights from Sofia to Pennsylvania?
Confirm your travel details to search for the latest offers for flights from Sofia to Pennsylvania. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.
How can I save money on flights from Sofia to Pennsylvania with momondo?
With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.
How does momondo find its flight prices?
We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Why use momondo?

Why should I use momondo to find a flight deal from Sofia to Pennsylvania?

It is quick and easy to find Sofia to Pennsylvania flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Pennsylvania that suits you.

Can I find flights from Sofia to Pennsylvania with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Pennsylvania from Sofia with this policy.

How can momondo help me find flights from Sofia to Pennsylvania?

momondo provides multiple filters to help you find the best flight to Pennsylvania from Sofia. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Sofia to Pennsylvania right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Sofia to Pennsylvania flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.