What airlines fly to Philadelphia?

Lufthansa, Turkish Airlines and LOT are the top three most popular airlines that fly to Philadelphia from Sofia according to our data. Lufthansa is the first choice among our users, with 34% of people opting to fly with this airline when traveling to Philadelphia. Keep in mind that there are 8 different airlines that fly to Philadelphia on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Sofia to Philadelphia?

Qatar Airways, Austrian Airlines, and SWISS are the most popular carriers operating from Sofia to Philadelphia

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

Prices for flights from Sofia Airport to Philadelphia Airport are refreshed on a daily basis.

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

There are 2 operators available for flights from Sofia Airport to Philadelphia Airport as of September 2025.

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

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 Sofia Airport to Philadelphia Airport.

What documentation or ID do you need to fly to Philadelphia Airport?

The necessary travel and health documents for your Philadelphia Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$569 Cheap Flights from Sofia to Philadelphia in 2025

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Find the cheapest flights from Sofia to Philadelphia

Round-trip

One-way

Cheap round-trip flights

6:15 am - 4:00 pmSOF-PHL

16h 45m1 stop

8:00 pm - 10:45 pmPHL-SOF

19h 45m2 stops

$648United Airlines

Find Deal

Thu, Oct 2 - Sun, Nov 30

6:15 am - 9:46 amSOF-PHL

34h 31m2 stops

8:00 pm - 10:45 pmPHL-SOF

19h 45m2 stops

$653United Airlines

Find Deal

Thu, Oct 2 - Sun, Nov 30

7:55 am - 2:47 pmSOF-PHL

37h 52m2 stops

3:30 pm - 6:20 pmPHL-SOF

19h 50m2 stops

$659

Find Deal

Thu, Jan 1 - Sun, Mar 1

7:55 am - 11:30 pmSOF-PHL

22h 35m2 stops

5:40 pm - 6:00 pmPHL-SOF

17h 20m1 stop

$671United Airlines

Find Deal

Thu, Jan 1 - Sun, Mar 1

7:55 am - 4:05 pmSOF-PHL

15h 10m2 stops

3:30 pm - 1:10 pmPHL-SOF

14h 40m2 stops

$721

Find Deal

Thu, Jan 1 - Sun, Mar 1

7:55 am - 4:05 pmSOF-PHL

15h 10m2 stops

3:30 pm - 1:10 pmPHL-SOF

14h 40m2 stops

$722

Find Deal

Thu, Jan 1 - Sun, Mar 1

7:55 am - 4:05 pmSOF-PHL

15h 10m2 stops

5:40 pm - 6:00 pmPHL-SOF

17h 20m1 stop

$723

Find Deal

Thu, Jan 1 - Sun, Mar 1

7:55 am - 4:05 pmSOF-PHL

15h 10m2 stops

5:40 pm - 6:00 pmPHL-SOF

17h 20m1 stop

$724

Find Deal

Thu, Jan 1 - Sun, Mar 1

7:00 am - 1:00 pmSOF-PHL

13h 00m1 stop

7:45 pm - 4:20 pmPHL-SOF

13h 35m1 stop

$846

Find Deal

Thu, Oct 2 - Sun, Nov 30

5:10 pm - 8:55 pmSOF-PHL

34h 45m3 stops

4:35 pm - 1:25 pmPHL-SOF

37h 50m2 stops

$1,144

Find Deal

Thu, Oct 2 - Sun, Nov 30

United Airlines flights from Sofia to Philadelphia

Our best United Airlines deals on Sofia to Philadelphia flight tickets

United Airlines

Oct 2

SOF6:15 amSofia

16h 45m

1 stop

PHL4:00 pmPhiladelphia

Nov 30

PHL8:00 pmPhiladelphia

19h 45m

2 stops

SOF10:45 pmSofia

$648

Find similar

United Airlines

Oct 2

SOF6:15 amSofia

34h 31m

2 stops

PHL9:46 amPhiladelphia

Nov 30

PHL8:00 pmPhiladelphia

19h 45m

2 stops

SOF10:45 pmSofia

$653

Find similar

United Airlines

Jan 1

SOF7:55 amSofia

22h 35m

2 stops

PHL11:30 pmPhiladelphia

Mar 1

PHL5:40 pmPhiladelphia

17h 20m

1 stop

SOF6:00 pmSofia

$671

Find similar

Austrian Airlines flights from Sofia to Philadelphia

Our best Austrian Airlines deals on Sofia to Philadelphia flight tickets

Austrian Airlines

Sep 20

SOF6:55 pmSofia

28h 05m

2 stops

PHL4:00 pmPhiladelphia

Oct 11

PHL7:30 amPhiladelphia

21h 10m

2 stops

SOF11:40 amSofia

$700

Find similar

Austrian Airlines

Sep 20

SOF6:55 pmSofia

28h 05m

2 stops

PHL4:00 pmPhiladelphia

Oct 11

PHL7:30 amPhiladelphia

21h 10m

2 stops

SOF11:40 amSofia

$779

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SofiaPhiladelphia

SOF - PHL

SOFPHL

Sofia

Thu 10/2

6:15 am-4:00 pm

1 stop16h 45m

Philadelphia

Sun 11/30

8:00 pm-10:45 pm

2 stops19h 45m

$648

SofiaPhiladelphia

SOF - PHL

SOFPHL

Sofia

Thu 10/2

6:15 am-9:46 am

2 stops34h 31m

Philadelphia

Sun 11/30

8:00 pm-10:45 pm

2 stops19h 45m

$653

SofiaPhiladelphia

SOF - PHL

SOFPHL

Sofia

Thu 1/1

7:55 am-2:47 pm

2 stops37h 52m

Philadelphia

Sun 3/1

3:30 pm-6:20 pm

2 stops19h 50m

$659

SofiaPhiladelphia

SOF - PHL

SOFPHL

Sofia

Thu 1/1

7:55 am-11:30 pm

2 stops22h 35m

Philadelphia

Sun 3/1

5:40 pm-6:00 pm

1 stop17h 20m

$671

SofiaPhiladelphia

SOF - PHL

SOFPHL

Sofia

Thu 1/1

7:55 am-4:05 pm

2 stops15h 10m

Philadelphia

Sun 3/1

3:30 pm-1:10 pm

2 stops14h 40m

$721

SofiaPhiladelphia

SOF - PHL

SOFPHL

Sofia

Thu 1/1

7:55 am-4:05 pm

2 stops15h 10m

Philadelphia

Sun 3/1

3:30 pm-1:10 pm

2 stops14h 40m

$722

SofiaPhiladelphia

SOF - PHL

SOFPHL

Sofia

Thu 1/1

7:55 am-4:05 pm

2 stops15h 10m

Philadelphia

Sun 3/1

5:40 pm-6:00 pm

1 stop17h 20m

$723

SofiaPhiladelphia

SOF - PHL

SOFPHL

Sofia

Thu 1/1

7:55 am-4:05 pm

2 stops15h 10m

Philadelphia

Sun 3/1

5:40 pm-6:00 pm

1 stop17h 20m

$724

SofiaPhiladelphia

SOF - PHL

SOFPHL

Sofia

Thu 10/2

7:00 am-1:00 pm

1 stop13h 00m

Philadelphia

Sun 11/30

7:45 pm-4:20 pm

1 stop13h 35m

$846

SofiaPhiladelphia

SOF - PHL

SOFPHL

Sofia

Thu 10/2

5:10 pm-8:55 pm

3 stops34h 45m

Philadelphia

Sun 11/30

4:35 pm-1:25 pm

2 stops37h 50m

$1,144

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first

How to get the cheapest flight ticket from Sofia to Philadelphia

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

Prices

Airlines

What is the cheapest month to fly to Philadelphia?

The cheapest month to fly to Philadelphia from Sofia is in March. Flight prices, which tend to average around $581, are often lower during this time because this is during the off-season. The month of February is another great option to travel to Philadelphia, with average flight prices from Sofia averaging around $593.

What is the cheapest day to depart on your flight to Philadelphia?

The cheapest day to depart from Sofia to Philadelphia is on a Wednesday. Travelers who choose to depart for Philadelphia on a Wednesday will often find tickets for as low as $579. On the other hand, Thursday is the most expensive day to depart from Sofia because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $986.

What is the cheapest time of day to depart on your flight to Philadelphia?

According to our data, the cheapest time of day to fly to Philadelphia is in the evening. momondo users have found flights departing from Sofia to Philadelphia in the evening for as low as $651. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Philadelphia is in the morning when prices are around $742.

Can stopping save me money on Sofia to Philadelphia flights?

You could potentially save up to 5% on your flight if you consider stops on a Sofia to Philadelphia flight.

When to book flights from Sofia to Philadelphia

Are you open to changing your travel dates? Check out the ideal times to fly from Sofia to Philadelphia according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Sofia to Philadelphia (SOF to PHL) flight deals and tips

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

Direct flights	None

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

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How far is Sofia to Philadelphia by plane?
The straight-line distance from Sofia to Philadelphia is 4789.3 mi. Typically, this will take 13h 00m by plane in normal conditions.
When did momondo last update prices for flights from Sofia Airport to Philadelphia Airport?
Prices for flights from Sofia Airport to Philadelphia Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Sofia Airport to Philadelphia Airport?
There are 2 operators available for flights from Sofia Airport to Philadelphia Airport as of September 2025.
How old do you have to be to fly from Sofia Airport to Philadelphia Airport?
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 Sofia Airport to Philadelphia Airport.
What documentation or ID do you need to fly to Philadelphia Airport?
The necessary travel and health documents for your Philadelphia Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Sofia to Philadelphia?
Based on momondo bookings for flights between Sofia and Philadelphia, the leading airline is Lufthansa, making up 67% of the total bookings. Other popular airlines include United Airlines with 33%.

Best airlines flying from Sofia to Philadelphia

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

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $588	Free Cancellation	Rating 7.4 8,937 reviews		Search United Airlines flights
Lufthansa	PriceFrom $602	Free Cancellation	Rating 6.8 7,409 reviews		Search Lufthansa flights

Wildwood

Cape May

Rehoboth Beach

Ocean City

Wildwood Crest

King of Prussia

Dewey Beach

Reading

Newark

Cherry Hill

North Wildwood

Dover

Lewes

Avalon

Stone Harbor

Vineland

Essington

Pottstown

New Castle

Exton

Why use momondo?

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

It is quick and easy to find Sofia to Philadelphia 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 Philadelphia that suits you.

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

Yes. All flights to Philadelphia from Sofia on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential Sofia to Philadelphia flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Philadelphia, momondo offers a useful price alert feature which will track prices for flights to Philadelphia from Sofia and alert you when they change.