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

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 33% 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.

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 November 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.

$495 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

Cheap round-trip flights

Enter your travel dates to find the best prices.

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

12h 45m1 stop Frankfurt am Main

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

16h 40m1 stop Frankfurt am Main

$719Lufthansa

Sun, Dec 13 - Wed, May 5

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

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

6:45 pm - 4:05 pmSOF Sofia-PHL Philadelphia

28h 20m2 stops Vienna Intl Frankfurt am Main

$719Multiple Airlines

Mon, Dec 7 - Mon, Dec 14

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

12h 45m1 stop Frankfurt am Main

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

16h 40m1 stop Frankfurt am Main

$721Lufthansa

Sun, Dec 13 - Thu, May 6

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

12h 45m1 stop Frankfurt am Main

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

16h 40m1 stop Frankfurt am Main

$721Lufthansa

Sun, Dec 13 - Tue, May 4

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

12h 45m1 stop Frankfurt am Main

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

16h 40m1 stop Frankfurt am Main

$722United Airlines

Sun, Dec 13 - Fri, May 7

4:35 pm - 10:55 pmPHL Philadelphia-SOF Sofia

23h 20m2 stops Toronto Pearson Intl Munich Franz Josef Strauss

6:25 am - 10:45 pmSOF Sofia-PHL Philadelphia

23h 20m2 stops Frankfurt am Main Toronto Pearson Intl

$722Multiple Airlines

Tue, Mar 2 - Fri, Mar 5

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

12h 45m1 stop Frankfurt am Main

6:20 am - 2:36 pmSOF Sofia-PHL Philadelphia

15h 16m2 stops Frankfurt am Main Montreal Pierre Elliott Trudeau Intl

$724United Airlines

Sun, Dec 13 - Tue, May 4

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

12h 45m1 stop Frankfurt am Main

6:20 am - 2:36 pmSOF Sofia-PHL Philadelphia

15h 16m2 stops Frankfurt am Main Montreal Pierre Elliott Trudeau Intl

$724United Airlines

Sun, Dec 13 - Thu, May 6

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

12h 45m1 stop Frankfurt am Main

6:20 am - 2:36 pmSOF Sofia-PHL Philadelphia

15h 16m2 stops Frankfurt am Main Montreal Pierre Elliott Trudeau Intl

$724Multiple Airlines

Sun, Dec 13 - Wed, May 5

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

12h 45m1 stop Frankfurt am Main

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

16h 40m1 stop Frankfurt am Main

$757Lufthansa

Sun, Dec 13 - Tue, Jun 1

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Air Canada flights from Philadelphia to Sofia

Our best Air Canada deals on Philadelphia to Sofia flight tickets

Air Canada

May 3

PHL9:15 amPhiladelphia

26h 30m

2 stops

SOF6:45 pmSofia

May 7

SOF6:20 amSofia

22h 06m

2 stops

PHL9:26 pmPhiladelphia

$734

Air Canada

May 3

PHL9:15 amPhiladelphia

26h 30m

2 stops

SOF6:45 pmSofia

May 5

SOF1:05 pmSofia

32h 31m

2 stops

PHL2:36 pmPhiladelphia

$736

Air Canada

Mar 2

PHL3:20 pmPhiladelphia

15h 05m

2 stops

SOF1:25 pmSofia

Mar 5

SOF6:25 amSofia

23h 20m

2 stops

PHL10:45 pmPhiladelphia

$751

British Airways flights from Philadelphia to Sofia

Our best British Airways deals on Philadelphia to Sofia flight tickets

British Airways

Mar 2

PHL6:35 pmPhiladelphia

18h 35m

1 stop

SOF8:10 pmSofia

Mar 5

SOF8:25 pmSofia

26h 50m

1 stop

PHL4:15 pmPhiladelphia

$767

British Airways

Mar 2

PHL5:10 pmPhiladelphia

20h 00m

2 stops

SOF8:10 pmSofia

Mar 5

SOF8:25 pmSofia

26h 50m

1 stop

PHL4:15 pmPhiladelphia

$773

British Airways

Dec 13

PHL6:35 pmPhiladelphia

14h 45m

1 stop

SOF4:20 pmSofia

Jun 16

SOF9:25 pmSofia

26h 15m

1 stop

PHL4:40 pmPhiladelphia

$818

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Sun 12/13

5:40 pm-1:25 pm

1 stop12h 45m

Sofia

Wed 5/5

6:20 am-4:00 pm

1 stop16h 40m

$719

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Mon 12/7

3:20 pm-1:15 pm

2 stops14h 55m

Sofia

Mon 12/14

6:45 pm-4:05 pm

2 stops28h 20m

$719

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Sun 12/13

5:40 pm-1:25 pm

1 stop12h 45m

Sofia

Thu 5/6

6:20 am-4:00 pm

1 stop16h 40m

$721

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Sun 12/13

5:40 pm-1:25 pm

1 stop12h 45m

Sofia

Tue 5/4

6:20 am-4:00 pm

1 stop16h 40m

$721

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Sun 12/13

5:40 pm-1:25 pm

1 stop12h 45m

Sofia

Fri 5/7

6:20 am-4:00 pm

1 stop16h 40m

$722

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Tue 3/2

4:35 pm-10:55 pm

2 stops23h 20m

Sofia

Fri 3/5

6:25 am-10:45 pm

2 stops23h 20m

$722

Quickest round-trip

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Sun 12/13

5:40 pm-1:25 pm

1 stop12h 45m

Sofia

Tue 5/4

6:20 am-2:36 pm

2 stops15h 16m

$724

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Sun 12/13

5:40 pm-1:25 pm

1 stop12h 45m

Sofia

Thu 5/6

6:20 am-2:36 pm

2 stops15h 16m

$724

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Sun 12/13

5:40 pm-1:25 pm

1 stop12h 45m

Sofia

Wed 5/5

6:20 am-2:36 pm

2 stops15h 16m

$724

PhiladelphiaSofia

PHL Philadelphia - SOF Sofia

PHLSOF

Philadelphia

Sun 12/13

5:40 pm-1:25 pm

1 stop12h 45m

Sofia

Tue 6/1

6:20 am-4:00 pm

1 stop16h 40m

$757

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	$495
Fastest flight time	12h 45m
Direct flights	None

The best one-way flight to Sofia from Philadelphia in the past 72 hours is $495. The best round-trip flight deal from Philadelphia to Sofia found on momondo in the last 72 hours is $719.

The fastest flight from Philadelphia to Sofia takes 12h 45m

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 12h 45m.
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 November 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 10,469 reviews		Search United Airlines flights
Lufthansa	PriceFrom $546	Free Cancellation	Rating 6.8 8,297 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.