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 October 2026.

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.

$637 Cheap Flights from Sofia to Philadelphia in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Sofia to Philadelphia

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

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

$804Lufthansa

Sun, Dec 6 - Sun, Dec 13

6:25 am - 5:05 pmSOF Sofia-PHL Philadelphia

16h 40m1 stop Frankfurt am Main

5:40 pm - 6:10 pmPHL Philadelphia-SOF Sofia

17h 30m1 stop Frankfurt am Main

$805Lufthansa

Thu, Oct 29 - Thu, Nov 5

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

16h 40m1 stop Frankfurt am Main

10:25 am - 10:55 pmPHL Philadelphia-SOF Sofia

29h 30m2 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss

$807United Airlines

Sun, Dec 6 - Sun, Dec 13

6:25 am - 5:05 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

Thu, Oct 29 - Thu, Nov 5

6:25 am - 9:39 pmSOF Sofia-PHL Philadelphia

22h 14m2 stops Frankfurt am Main Chicago O'Hare Intl

10:25 am - 10:55 pmPHL Philadelphia-SOF Sofia

29h 30m2 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss

$817United Airlines

Sun, Dec 6 - Sun, Dec 13

7:55 am - 11:30 pmSOF Sofia-PHL Philadelphia

21h 35m2 stops Vienna Intl Washington, D.C. Dulles Intl

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

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

$828United Airlines

Thu, Oct 29 - Thu, Nov 5

6:40 pm - 4:10 pmSOF Sofia-PHL Philadelphia

28h 30m3 stops Warsaw Frederic Chopin Brussels Bruxelles-National Dublin

5:40 pm - 6:20 pmPHL Philadelphia-SOF Sofia

17h 40m2 stops Dublin Warsaw Modlin

$1,060Multiple Airlines

Sun, Dec 6 - Sun, Dec 13

7:55 am - 2:44 pmSOF Sofia-PHL Philadelphia

36h 49m2 stops Vienna Intl Montreal Pierre Elliott Trudeau Intl

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

21h 10m3 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl Frankfurt am Main

$1,072Multiple Airlines

Thu, Oct 29 - Thu, Nov 5

6:25 am - 10:56 pmSOF Sofia-PHL Philadelphia

22h 31m3 stops Frankfurt am Main Munich Franz Josef Strauss Toronto Pearson Intl

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

21h 10m3 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl Frankfurt am Main

$1,184Air Canada

Thu, Oct 29 - Thu, Nov 5

6:00 am - 10:56 pmSOF Sofia-PHL Philadelphia

23h 56m2 stops Munich Franz Josef Strauss Toronto Pearson Intl

3:20 pm - 1:15 pmPHL Philadelphia-SOF Sofia

14h 55m2 stops Montreal Pierre Elliott Trudeau Intl Munich Franz Josef Strauss

$1,909Lufthansa

Tue, Dec 15 - Sun, Dec 27

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Lufthansa flights from Sofia to Philadelphia

Our best Lufthansa deals on Sofia to Philadelphia flight tickets

Lufthansa

Dec 6

SOF6:25 amSofia

16h 40m

1 stop

PHL4:05 pmPhiladelphia

Dec 13

PHL5:40 pmPhiladelphia

12h 45m

1 stop

SOF1:25 pmSofia

$804

Lufthansa

Oct 29

SOF6:25 amSofia

16h 40m

1 stop

PHL5:05 pmPhiladelphia

Nov 5

PHL5:40 pmPhiladelphia

17h 30m

1 stop

SOF6:10 pmSofia

$805

Lufthansa

Dec 15

SOF6:00 amSofia

23h 56m

2 stops

PHL10:56 pmPhiladelphia

Dec 27

PHL3:20 pmPhiladelphia

14h 55m

2 stops

SOF1:15 pmSofia

$1,909

United Airlines flights from Sofia to Philadelphia

Our best United Airlines deals on Sofia to Philadelphia flight tickets

United Airlines

Dec 6

SOF6:25 amSofia

16h 40m

1 stop

PHL4:05 pmPhiladelphia

Dec 13

PHL10:25 amPhiladelphia

29h 30m

2 stops

SOF10:55 pmSofia

$807

United Airlines

Oct 29

SOF6:25 amSofia

16h 40m

1 stop

PHL5:05 pmPhiladelphia

Nov 5

PHL3:20 pmPhiladelphia

15h 05m

2 stops

SOF1:25 pmSofia

$808

United Airlines

Dec 6

SOF6:25 amSofia

22h 14m

2 stops

PHL9:39 pmPhiladelphia

Dec 13

PHL10:25 amPhiladelphia

29h 30m

2 stops

SOF10:55 pmSofia

$817

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Sun 12/6

6:25 am-4:05 pm

1 stop16h 40m

Philadelphia

Sun 12/13

5:40 pm-1:25 pm

1 stop12h 45m

$804

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Thu 10/29

6:25 am-5:05 pm

1 stop16h 40m

Philadelphia

Thu 11/5

5:40 pm-6:10 pm

1 stop17h 30m

$805

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Sun 12/6

6:25 am-4:05 pm

1 stop16h 40m

Philadelphia

Sun 12/13

10:25 am-10:55 pm

2 stops29h 30m

$807

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Thu 10/29

6:25 am-5:05 pm

1 stop16h 40m

Philadelphia

Thu 11/5

3:20 pm-1:25 pm

2 stops15h 05m

$808

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Sun 12/6

6:25 am-9:39 pm

2 stops22h 14m

Philadelphia

Sun 12/13

10:25 am-10:55 pm

2 stops29h 30m

$817

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Thu 10/29

7:55 am-11:30 pm

2 stops21h 35m

Philadelphia

Thu 11/5

3:20 pm-1:25 pm

2 stops15h 05m

$828

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Sun 12/6

6:40 pm-4:10 pm

3 stops28h 30m

Philadelphia

Sun 12/13

5:40 pm-6:20 pm

2 stops17h 40m

$1,060

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Thu 10/29

7:55 am-2:44 pm

2 stops36h 49m

Philadelphia

Thu 11/5

9:15 am-1:25 pm

3 stops21h 10m

$1,072

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Thu 10/29

6:25 am-10:56 pm

3 stops22h 31m

Philadelphia

Thu 11/5

9:15 am-1:25 pm

3 stops21h 10m

$1,184

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Tue 12/15

6:00 am-10:56 pm

2 stops23h 56m

Philadelphia

Sun 12/27

3:20 pm-1:15 pm

2 stops14h 55m

$1,909

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

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

Lufthansa is the most popular carrier operating from Sofia to Philadelphia

What airlines fly to Philadelphia?

Lufthansa, Turkish Airlines and United Airlines 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 40% of people opting to fly with this airline when traveling to Philadelphia. Keep in mind that there are 4 different airlines that fly to Philadelphia on a routine basis, so you have a few additional options to choose from.

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

Best Price Found	$637
Fastest flight time	16h 40m
Direct flights	None

The best one-way flight to Philadelphia from Sofia in the past 72 hours is $637. The best round-trip flight deal from Sofia to Philadelphia found on momondo in the last 72 hours is $804.

The fastest flight from Sofia to Philadelphia takes 16h 40m

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

Search flight deals

Frequently asked questions about flying from Sofia to Philadelphia

How far is Sofia to Philadelphia by plane?
The straight-line distance from Sofia to Philadelphia is 4789.3 mi. Typically, this will take 16h 40m 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 October 2026.
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 62% of the total bookings. Other popular airlines include United Airlines with 38%.

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
Lufthansa	PriceFrom $693	Free Cancellation	Rating 6.8 8,277 reviews		Search Lufthansa flights
United Airlines	PriceFrom $714	Free Cancellation	Rating 7.4 10,361 reviews		Search United Airlines flights

Wildwood

Cape May

Rehoboth Beach

Wildwood Crest

Ocean City

Cherry Hill

King of Prussia

Newark

Reading

Essington

Dover

Dewey Beach

New Castle

North Wildwood

Vineland

Chester

Lewes

Avalon

Elkton

Pottstown

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.