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 32% 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?

British Airways and United Airlines 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 December 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.

$488 Cheap Flights from Sofia to Philadelphia in 2025/26

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Find the cheapest flights from Sofia to Philadelphia

Round-trip

One-way

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Cheap round-trip flights

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7:00 am - 10:06 pm

SOF

PHL

22h 06m2 stops

12:16 pm - 1:55 pm

PHL

SOF

18h 39m2 stops

$613Multiple Airlines

Thu, Jan 15 - Thu, Jan 22

6:00 am - 4:05 pm

SOF

PHL

17h 05m1 stop

5:40 pm - 10:45 pm

PHL

SOF

22h 05m1 stop

$694Lufthansa

Thu, Jan 15 - Thu, Jan 22

6:00 am - 4:05 pm

SOF

PHL

17h 05m1 stop

5:40 pm - 1:50 pm

PHL

SOF

13h 10m1 stop

$695United Airlines

Thu, Jan 15 - Thu, Jan 22

6:00 am - 4:05 pm

SOF

PHL

17h 05m1 stop

5:00 pm - 10:45 pm

PHL

SOF

22h 45m2 stops

$698United Airlines

Thu, Jan 15 - Thu, Jan 22

6:00 am - 4:05 pm

SOF

PHL

17h 05m1 stop

1:10 pm - 1:50 pm

PHL

SOF

17h 40m2 stops

$699United Airlines

Thu, Jan 15 - Thu, Jan 22

6:00 am - 6:54 pm

SOF

PHL

19h 54m2 stops

1:10 pm - 10:45 pm

PHL

SOF

26h 35m2 stops

$708United Airlines

Thu, Jan 15 - Thu, Jan 22

4:00 pm - 9:36 pm

SOF

PHL

36h 36m2 stops

1:10 pm - 1:15 pm

PHL

SOF

41h 05m3 stops

$849SWISS

Thu, Jan 15 - Thu, Jan 22

4:00 pm - 9:36 pm

SOF

PHL

36h 36m3 stops

1:10 pm - 1:15 pm

PHL

SOF

41h 05m3 stops

$954SWISS

Thu, Jan 15 - Thu, Jan 22

4:00 pm - 9:36 pm

SOF

PHL

36h 36m2 stops

1:10 pm - 3:15 pm

PHL

SOF

43h 05m3 stops

$1,065SWISS

Thu, Jan 15 - Tue, Jan 20

6:00 am - 4:05 pm

SOF

PHL

17h 05m1 stop

5:00 pm - 6:20 pm

PHL

SOF

18h 20m2 stops

$1,077United Airlines

Thu, Jan 15 - Tue, Jan 20

United Airlines flights from Sofia to Philadelphia

Our best United Airlines deals on Sofia to Philadelphia flight tickets

United Airlines

Jan 15

SOF6:00 amSofia

17h 05m

1 stop

PHL4:05 pmPhiladelphia

Jan 22

PHL5:40 pmPhiladelphia

13h 10m

1 stop

SOF1:50 pmSofia

$695

Find similar

United Airlines

Jan 15

SOF6:00 amSofia

17h 05m

1 stop

PHL4:05 pmPhiladelphia

Jan 22

PHL5:00 pmPhiladelphia

22h 45m

2 stops

SOF10:45 pmSofia

$698

Find similar

United Airlines

Jan 15

SOF6:00 amSofia

17h 05m

1 stop

PHL4:05 pmPhiladelphia

Jan 22

PHL1:10 pmPhiladelphia

17h 40m

2 stops

SOF1:50 pmSofia

$699

Find similar

SWISS flights from Sofia to Philadelphia

Our best SWISS deals on Sofia to Philadelphia flight tickets

SWISS

Jan 15

SOF4:00 pmSofia

36h 36m

2 stops

PHL9:36 pmPhiladelphia

Jan 22

PHL1:10 pmPhiladelphia

41h 05m

3 stops

SOF1:15 pmSofia

$849

Find similar

SWISS

Jan 15

SOF4:00 pmSofia

36h 36m

3 stops

PHL9:36 pmPhiladelphia

Jan 22

PHL1:10 pmPhiladelphia

41h 05m

3 stops

SOF1:15 pmSofia

$954

Find similar

SWISS

Jan 15

SOF4:00 pmSofia

36h 36m

2 stops

PHL9:36 pmPhiladelphia

Jan 20

PHL1:10 pmPhiladelphia

43h 05m

3 stops

SOF3:15 pmSofia

$1,065

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SofiaPhiladelphia

SOF - PHL

SOFPHL

Sofia

Thu 1/15

7:00 am-10:06 pm

2 stops22h 06m

Philadelphia

Thu 1/22

12:16 pm-1:55 pm

2 stops18h 39m

$613

SofiaPhiladelphia

SOF - PHL

SOFPHL

Sofia

Thu 1/15

6:00 am-4:05 pm

1 stop17h 05m

Philadelphia

Thu 1/22

5:40 pm-10:45 pm

1 stop22h 05m

$694

SofiaPhiladelphia

SOF - PHL

SOFPHL

Sofia

Thu 1/15

6:00 am-4:05 pm

1 stop17h 05m

Philadelphia

Thu 1/22

5:40 pm-1:50 pm

1 stop13h 10m

$695

SofiaPhiladelphia

SOF - PHL

SOFPHL

Sofia

Thu 1/15

6:00 am-4:05 pm

1 stop17h 05m

Philadelphia

Thu 1/22

5:00 pm-10:45 pm

2 stops22h 45m

$698

SofiaPhiladelphia

SOF - PHL

SOFPHL

Sofia

Thu 1/15

6:00 am-4:05 pm

1 stop17h 05m

Philadelphia

Thu 1/22

1:10 pm-1:50 pm

2 stops17h 40m

$699

SofiaPhiladelphia

SOF - PHL

SOFPHL

Sofia

Thu 1/15

6:00 am-6:54 pm

2 stops19h 54m

Philadelphia

Thu 1/22

1:10 pm-10:45 pm

2 stops26h 35m

$708

SofiaPhiladelphia

SOF - PHL

SOFPHL

Sofia

Thu 1/15

4:00 pm-9:36 pm

2 stops36h 36m

Philadelphia

Thu 1/22

1:10 pm-1:15 pm

3 stops41h 05m

$849

SofiaPhiladelphia

SOF - PHL

SOFPHL

Sofia

Thu 1/15

4:00 pm-9:36 pm

3 stops36h 36m

Philadelphia

Thu 1/22

1:10 pm-1:15 pm

3 stops41h 05m

$954

SofiaPhiladelphia

SOF - PHL

SOFPHL

Sofia

Thu 1/15

4:00 pm-9:36 pm

2 stops36h 36m

Philadelphia

Tue 1/20

1:10 pm-3:15 pm

3 stops43h 05m

$1,065

SofiaPhiladelphia

SOF - PHL

SOFPHL

Sofia

Thu 1/15

6:00 am-4:05 pm

1 stop17h 05m

Philadelphia

Tue 1/20

5:00 pm-6:20 pm

2 stops18h 20m

$1,077

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 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

Fastest flight time	23h 56m
Direct flights	None

The fastest flight from Sofia to Philadelphia takes 23h 56m

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 23h 56m 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 December 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 69% of the total bookings. Other popular airlines include United Airlines with 31%.

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 $593	Free Cancellation	Rating 7.4 9,113 reviews		Search United Airlines flights
Lufthansa	PriceFrom $671	Free Cancellation	Rating 6.8 7,658 reviews		Search Lufthansa flights

Wildwood

Cape May

Rehoboth Beach

Wildwood Crest

Ocean City

King of Prussia

Cherry Hill

Newark

Dewey Beach

Reading

North Wildwood

Avalon

Dover

Lewes

Stone Harbor

Essington

Vineland

Pottstown

Elkton

Somers Point

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.