What airlines fly to Sofia?

Lufthansa, Turkish Airlines and United Airlines are the top three most popular airlines that fly to Sofia from Philadelphia 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 Sofia. Keep in mind that there are 11 different airlines that fly to Sofia on a routine basis, so you have a few additional options to choose from.

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

British Airways and Air Canada are the most popular carriers operating from Philadelphia to Sofia

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

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

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

The number of operators available for flights from Philadelphia Airport to Sofia Airport is 2 as of October 2026.

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

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 Philadelphia Airport to Sofia Airport.

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

The travel and health documents required for your trip to Sofia Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sofia Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$361 Cheap Flights from Philadelphia to Sofia in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Philadelphia to Sofia

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:53 am - 1:15 pmPHL Philadelphia-SOF Sofia

19h 22m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

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

16h 40m1 stop Frankfurt am Main

$704United Airlines

Tue, Dec 8 - Tue, Dec 15

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

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

2:00 pm - 10:46 pmSOF Sofia-PHL Philadelphia

39h 46m2 stops Munich Franz Josef Strauss Toronto Pearson Intl

$707Multiple Airlines

Mon, Feb 1 - Mon, Feb 15

3:20 pm - 2:15 pmPHL Philadelphia-SOF Sofia

39h 55m2 stops Montreal Pierre Elliott Trudeau Intl Zurich

6:25 am - 4:21 pmSOF Sofia-PHL Philadelphia

40h 56m2 stops Frankfurt am Main Toronto Pearson Intl

$707Multiple Airlines

Sat, Feb 20 - Fri, Feb 26

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

12h 45m1 stop Frankfurt am Main

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

16h 40m1 stop Frankfurt am Main

$708Lufthansa

Tue, Dec 8 - Tue, Dec 15

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

21h 10m2 stops Toronto Pearson Intl Frankfurt am Main

2:10 pm - 10:46 pmSOF Sofia-PHL Philadelphia

15h 36m2 stops Frankfurt am Main Toronto Pearson Intl

$708Multiple Airlines

Tue, Dec 8 - Tue, Dec 15

1:00 pm - 12:20 pmPHL Philadelphia-SOF Sofia

16h 20m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

6:20 am - 4:00 pmSOF Sofia-PHL Philadelphia

16h 40m1 stop Frankfurt am Main

$723United Airlines

Tue, Apr 20 - Thu, Apr 22

10:15 am - 12:20 pmPHL Philadelphia-SOF Sofia

19h 05m2 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss

6:20 am - 2:41 pmSOF Sofia-PHL Philadelphia

15h 21m2 stops Frankfurt am Main Montreal Pierre Elliott Trudeau Intl

$726United Airlines

Tue, Apr 20 - Thu, Apr 22

1:19 pm - 10:55 pmPHL Philadelphia-SOF Sofia

26h 36m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

2:00 pm - 10:46 pmSOF Sofia-PHL Philadelphia

39h 46m2 stops Munich Franz Josef Strauss Toronto Pearson Intl

$730United Airlines

Mon, Feb 1 - Mon, Feb 15

5:35 pm - 6:15 pmPHL Philadelphia-SOF Sofia

17h 40m1 stop Frankfurt am Main

7:00 pm - 4:00 pmSOF Sofia-PHL Philadelphia

28h 00m1 stop Frankfurt am Main

$793Lufthansa

Mon, Apr 5 - Mon, May 17

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

12h 45m1 stop Frankfurt am Main

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

16h 40m1 stop Frankfurt am Main

$815Lufthansa

Tue, Dec 15 - Sun, Jan 17

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

Lufthansa flights from Philadelphia to Sofia

Our best Lufthansa deals on Philadelphia to Sofia flight tickets

Lufthansa

Apr 5

PHL5:35 pmPhiladelphia

17h 40m

1 stop

SOF6:15 pmSofia

May 17

SOF7:00 pmSofia

28h 00m

1 stop

PHL4:00 pmPhiladelphia

$793

Lufthansa

Dec 15

PHL5:40 pmPhiladelphia

12h 45m

1 stop

SOF1:25 pmSofia

Jan 17

SOF6:25 amSofia

16h 40m

1 stop

PHL4:05 pmPhiladelphia

$815

Lufthansa

Nov 1

PHL5:40 pmPhiladelphia

22h 20m

1 stop

SOF11:00 pmSofia

Nov 7

SOF2:10 pmSofia

32h 55m

1 stop

PHL4:05 pmPhiladelphia

$856

British Airways flights from Philadelphia to Sofia

Our best British Airways deals on Philadelphia to Sofia flight tickets

British Airways

Feb 1

PHL7:45 pmPhiladelphia

41h 25m

2 stops

SOF8:10 pmSofia

Feb 15

SOF5:15 pmSofia

30h 00m

1 stop

PHL4:15 pmPhiladelphia

$712

British Airways

Feb 20

PHL6:35 pmPhiladelphia

17h 00m

1 stop

SOF6:35 pmSofia

Feb 26

SOF8:25 pmSofia

26h 50m

1 stop

PHL4:15 pmPhiladelphia

$799

British Airways

Feb 20

PHL7:34 pmPhiladelphia

37h 46m

2 stops

SOF4:20 pmSofia

Feb 26

SOF8:25 pmSofia

26h 50m

1 stop

PHL4:15 pmPhiladelphia

$802

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Tue 12/8

10:53 am-1:15 pm

2 stops19h 22m

Sofia

Tue 12/15

6:25 am-4:05 pm

1 stop16h 40m

$704

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Mon 2/1

3:20 pm-1:15 pm

2 stops14h 55m

Sofia

Mon 2/15

2:00 pm-10:46 pm

2 stops39h 46m

$707

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Sat 2/20

3:20 pm-2:15 pm

2 stops39h 55m

Sofia

Fri 2/26

6:25 am-4:21 pm

2 stops40h 56m

$707

Quickest round-trip

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Tue 12/8

5:40 pm-1:25 pm

1 stop12h 45m

Sofia

Tue 12/15

6:25 am-4:05 pm

1 stop16h 40m

$708

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Tue 12/8

9:15 am-1:25 pm

2 stops21h 10m

Sofia

Tue 12/15

2:10 pm-10:46 pm

2 stops15h 36m

$708

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Tue 4/20

1:00 pm-12:20 pm

2 stops16h 20m

Sofia

Thu 4/22

6:20 am-4:00 pm

1 stop16h 40m

$723

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Tue 4/20

10:15 am-12:20 pm

2 stops19h 05m

Sofia

Thu 4/22

6:20 am-2:41 pm

2 stops15h 21m

$726

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Mon 2/1

1:19 pm-10:55 pm

2 stops26h 36m

Sofia

Mon 2/15

2:00 pm-10:46 pm

2 stops39h 46m

$730

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Mon 4/5

5:35 pm-6:15 pm

1 stop17h 40m

Sofia

Mon 5/17

7:00 pm-4:00 pm

1 stop28h 00m

$793

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Tue 12/15

5:40 pm-1:25 pm

1 stop12h 45m

Sofia

Sun 1/17

6:25 am-4:05 pm

1 stop16h 40m

$815

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Philadelphia to Sofia

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 Sofia?

The cheapest month to fly to Sofia from Philadelphia is in March. Flight prices, which tend to average around $546, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of March, then book flights to Sofia from Philadelphia during April instead. Flights to Sofia in April, while not as cheap as those in March, still average around $653.

Can stopping save me money on Philadelphia to Sofia flights?

You could potentially save up to 44% on your flight if you consider stops on a Philadelphia to Sofia flight.

When to book flights from Philadelphia to Sofia

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

Estimated round-trip price

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

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

Best Price Found	$361
Fastest flight time	14h 55m
Direct flights	None

The best one-way flight to Sofia from Philadelphia in the past 72 hours is $361. The best round-trip flight deal from Philadelphia to Sofia found on momondo in the last 72 hours is $704.

The fastest flight from Philadelphia to Sofia takes 14h 55m

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

Search flight deals

Frequently asked questions about flying from Philadelphia to Sofia

How far is Philadelphia to Sofia by plane?
Sofia is 4789.3 mi away from Philadelphia. In terms of flight time, this usually takes a little over 14h 55m.
When did momondo last update prices for flights from Philadelphia Airport to Sofia Airport?
Prices for flights from Philadelphia Airport to Sofia Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Philadelphia Airport to Sofia Airport?
The number of operators available for flights from Philadelphia Airport to Sofia Airport is 2 as of October 2026.
How old do you have to be to fly from Philadelphia Airport to Sofia Airport?
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 Philadelphia Airport to Sofia Airport.
What documentation or ID do you need to fly to Sofia Airport?
The travel and health documents required for your trip to Sofia Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sofia Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Philadelphia to Sofia?
Based on momondo bookings for flights between Philadelphia and Sofia, the leading airline is Lufthansa, making up 68% of the total bookings. Other popular airlines include United Airlines with 32%.

Best airlines flying from Philadelphia to Sofia

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

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $540	Free Cancellation	Rating 7.3 10,444 reviews		Search United Airlines flights
Lufthansa	PriceFrom $546	Free Cancellation	Rating 6.8 8,298 reviews		Search Lufthansa flights

Bansko

Borovets

Velingrad

Sandanski

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Philadelphia to Sofia. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to Sofia from Philadelphia which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search for Philadelphia to Sofia flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Sofia from Philadelphia. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Sofia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Sat 11/28

Sat 12/5

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Bulgaria

Airlines

Cabin classes

Other Bulgaria destinations

Other flights from Philadelphia

Complete your trip

Feeling lucky

Fly your favorite airline to Sofia

Cheap flights from Philadelphia to Sofia from $361

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Sofia departing on 11/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Philadelphia to Sofia

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Lufthansa flights from Philadelphia to Sofia

Our best Lufthansa deals on Philadelphia to Sofia flight tickets

British Airways flights from Philadelphia to Sofia

Our best British Airways deals on Philadelphia to Sofia flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Philadelphia to Sofia that are best for you.

See travel insights to Sofia from

How to get the cheapest flight ticket from Philadelphia to Sofia

What is the cheapest month to fly to Sofia?

Can stopping save me money on Philadelphia to Sofia flights?

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

What airlines fly to Sofia?

When to book flights from Philadelphia to Sofia

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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Philadelphia to Sofia

Best airlines flying from Philadelphia to Sofia

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

Traveling to a place near Sofia?

Why use momondo?

An easier way to manage your Sofia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Bulgaria

Fly your favorite airline to Sofia

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Sofia

List of cabin classes available on flights landing in Sofia. Availability may vary depending on flight origin and airline.

Popular cities in Bulgaria

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Philadelphia

According to popular flight searches on momondo this year

Complete your trip to Sofia

Explore popular destinations other users love

According to popular flight searches on momondo this year