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 August 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.

$550 Cheap Flights from Sofia to Philadelphia in 2026

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.

8:30 pm - 4:15 pmSOF Sofia-PHL Philadelphia

26h 45m1 stop London Heathrow

6:35 pm - 4:20 pmPHL Philadelphia-SOF Sofia

14h 45m1 stop London Heathrow

$782British Airways

Fri, Nov 6 - Sun, Nov 8

9:05 pm - 4:15 pmSOF Sofia-PHL Philadelphia

26h 10m1 stop London Heathrow

4:25 pm - 4:20 pmPHL Philadelphia-SOF Sofia

16h 55m2 stops Boston Logan Intl London Heathrow

$782British Airways

Wed, Nov 4 - Sun, Nov 8

8:30 pm - 4:15 pmSOF Sofia-PHL Philadelphia

26h 45m1 stop London Heathrow

5:32 pm - 4:20 pmPHL Philadelphia-SOF Sofia

15h 48m2 stops Charlotte Douglas London Heathrow

$782British Airways

Fri, Nov 6 - Sun, Nov 8

9:05 pm - 4:15 pmSOF Sofia-PHL Philadelphia

26h 10m1 stop London Heathrow

6:35 pm - 4:20 pmPHL Philadelphia-SOF Sofia

14h 45m1 stop London Heathrow

$782British Airways

Wed, Nov 4 - Sun, Nov 8

6:30 am - 4:05 pmSOF Sofia-PHL Philadelphia

16h 35m1 stop Frankfurt am Main

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

22h 00m1 stop Frankfurt am Main

$808Lufthansa

Thu, Sep 10 - Thu, Sep 17

6:30 am - 4:05 pmSOF Sofia-PHL Philadelphia

16h 35m1 stop Frankfurt am Main

3:25 pm - 10:40 pmPHL Philadelphia-SOF Sofia

24h 15m2 stops Montreal Pierre Elliott Trudeau Intl Frankfurt am Main

$814United Airlines

Thu, Sep 10 - Thu, Sep 17

6:30 am - 4:05 pmSOF Sofia-PHL Philadelphia

16h 35m1 stop Frankfurt am Main

10:30 am - 6:40 pmPHL Philadelphia-SOF Sofia

25h 10m2 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss

$815United Airlines

Thu, Sep 10 - Wed, Sep 16

6:30 am - 2:47 pmSOF Sofia-PHL Philadelphia

15h 17m2 stops Frankfurt am Main Montreal Pierre Elliott Trudeau Intl

7:40 pm - 11:15 pmPHL Philadelphia-SOF Sofia

20h 35m2 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss

$818United Airlines

Thu, Sep 10 - Wed, Sep 16

6:10 am - 10:46 pmSOF Sofia-PHL Philadelphia

23h 36m2 stops Munich Franz Josef Strauss Toronto Pearson Intl

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

22h 00m1 stop Frankfurt am Main

$1,213Lufthansa

Sat, Sep 19 - Thu, Sep 24

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

16h 55m3 stops Munich Franz Josef Strauss Milan Linate Frankfurt am Main

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

18h 00m3 stops Frankfurt am Main Milan Malpensa Munich Franz Josef Strauss

$1,321Lufthansa

Thu, Sep 10 - Wed, Sep 16

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

United Airlines flights from Sofia to Philadelphia

Our best United Airlines deals on Sofia to Philadelphia flight tickets

United Airlines

Sep 29

SOF6:10 amSofia

16h 55m

1 stop

PHL4:05 pmPhiladelphia

Oct 31

PHL9:45 amPhiladelphia

21h 30m

2 stops

SOF1:15 pmSofia

$810

United Airlines

Sep 29

SOF6:10 amSofia

16h 55m

1 stop

PHL4:05 pmPhiladelphia

Nov 1

PHL5:40 pmPhiladelphia

12h 45m

1 stop

SOF1:25 pmSofia

$811

United Airlines

Sep 10

SOF6:30 amSofia

16h 35m

1 stop

PHL4:05 pmPhiladelphia

Sep 17

PHL3:25 pmPhiladelphia

24h 15m

2 stops

SOF10:40 pmSofia

$814

British Airways flights from Sofia to Philadelphia

Our best British Airways deals on Sofia to Philadelphia flight tickets

British Airways

Oct 2

SOF2:15 pmSofia

33h 25m

1 stop

PHL4:40 pmPhiladelphia

Nov 3

PHL6:35 pmPhiladelphia

18h 35m

1 stop

SOF8:10 pmSofia

$1,010

British Airways

Sep 11

SOF2:15 pmSofia

33h 35m

2 stops

PHL4:50 pmPhiladelphia

Sep 15

PHL6:45 pmPhiladelphia

18h 45m

1 stop

SOF8:30 pmSofia

$1,045

British Airways

Oct 2

SOF2:15 pmSofia

33h 25m

1 stop

PHL4:40 pmPhiladelphia

Nov 1

PHL6:35 pmPhiladelphia

14h 45m

1 stop

SOF4:20 pmSofia

$1,121

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Fri 11/6

8:30 pm-4:15 pm

1 stop26h 45m

Philadelphia

Sun 11/8

6:35 pm-4:20 pm

1 stop14h 45m

$782

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Wed 11/4

9:05 pm-4:15 pm

1 stop26h 10m

Philadelphia

Sun 11/8

4:25 pm-4:20 pm

2 stops16h 55m

$782

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Fri 11/6

8:30 pm-4:15 pm

1 stop26h 45m

Philadelphia

Sun 11/8

5:32 pm-4:20 pm

2 stops15h 48m

$782

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Wed 11/4

9:05 pm-4:15 pm

1 stop26h 10m

Philadelphia

Sun 11/8

6:35 pm-4:20 pm

1 stop14h 45m

$782

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Thu 9/10

6:30 am-4:05 pm

1 stop16h 35m

Philadelphia

Thu 9/17

5:40 pm-10:40 pm

1 stop22h 00m

$808

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Thu 9/10

6:30 am-4:05 pm

1 stop16h 35m

Philadelphia

Thu 9/17

3:25 pm-10:40 pm

2 stops24h 15m

$814

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Thu 9/10

6:30 am-4:05 pm

1 stop16h 35m

Philadelphia

Wed 9/16

10:30 am-6:40 pm

2 stops25h 10m

$815

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Thu 9/10

6:30 am-2:47 pm

2 stops15h 17m

Philadelphia

Wed 9/16

7:40 pm-11:15 pm

2 stops20h 35m

$818

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Sat 9/19

6:10 am-10:46 pm

2 stops23h 36m

Philadelphia

Thu 9/24

5:40 pm-10:40 pm

1 stop22h 00m

$1,213

Quickest round-trip

SofiaPhiladelphia

SOF Sofia - PHL Philadelphia

SOFPHL

Sofia

Thu 9/10

6:10 am-4:05 pm

3 stops16h 55m

Philadelphia

Wed 9/16

5:40 pm-6:40 pm

3 stops18h 00m

$1,321

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 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 38% of people opting to fly with this airline when traveling to Philadelphia. Keep in mind that there are 6 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	$550
Fastest flight time	16h 35m
Direct flights	None

The best one-way flight to Philadelphia from Sofia in the past 72 hours is $550. The best round-trip flight deal from Sofia to Philadelphia found on momondo in the last 72 hours is $782.

The fastest flight from Sofia to Philadelphia takes 16h 35m

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 35m 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 August 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 61% of the total bookings. Other popular airlines include United Airlines with 39%.

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 8,226 reviews		Search Lufthansa flights
United Airlines	PriceFrom $714	Free Cancellation	Rating 7.4 10,148 reviews		Search United Airlines flights

Wildwood

Rehoboth Beach

Cape May

Wildwood Crest

Ocean City

Cherry Hill

King of Prussia

Newark

Reading

Essington

Dover

Dewey Beach

North Wildwood

New Castle

Chester

Vineland

Avalon

Lewes

Pottstown

Stone Harbor

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.