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Cheap flights from Philadelphia to Sofia from $352

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 11/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Philadelphia to Sofia

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
3:10 pm - 11:15 pm
PHL
-
SOF
25h 05m
2 stops
United Airlines Logo
6:20 am - 4:05 pm
SOF
-
PHL
16h 45m
1 stop
$706United Airlines
ma, aug. 3 - wo, aug. 26
Lufthansa Logo
5:40 pm - 1:25 pm
PHL
-
SOF
12h 45m
1 stop
Lufthansa Logo
6:20 am - 4:05 pm
SOF
-
PHL
16h 45m
1 stop
$708Lufthansa
wo, aug. 12 - wo, aug. 26
Multiple Airlines Logo
6:10 am - 11:15 pm
PHL
-
SOF
34h 05m
2 stops
Multiple Airlines Logo
6:20 am - 4:05 pm
SOF
-
PHL
16h 45m
1 stop
$711Multiple Airlines
wo, aug. 5 - wo, aug. 26
United Airlines Logo
3:10 pm - 11:15 pm
PHL
-
SOF
25h 05m
2 stops
United Airlines Logo
6:20 am - 12:59 am
SOF
-
PHL
25h 39m
2 stops
$716United Airlines
ma, aug. 3 - wo, aug. 19
Lufthansa Logo
5:40 pm - 10:40 pm
PHL
-
SOF
22h 00m
1 stop
Lufthansa Logo
6:20 am - 4:05 pm
SOF
-
PHL
16h 45m
1 stop
$718Lufthansa
ma, aug. 3 - wo, aug. 26
United Airlines Logo
3:25 pm - 10:50 pm
PHL
-
SOF
24h 25m
2 stops
United Airlines Logo
6:20 am - 12:59 am
SOF
-
PHL
25h 39m
2 stops
$726United Airlines
di, aug. 4 - wo, aug. 19
United Airlines Logo
3:25 pm - 10:50 pm
PHL
-
SOF
24h 25m
2 stops
United Airlines Logo
6:10 am - 9:43 am
SOF
-
PHL
34h 33m
2 stops
$728United Airlines
di, aug. 4 - di, aug. 25
United Airlines Logo
7:45 pm - 6:00 pm
PHL
-
SOF
15h 15m
2 stops
United Airlines Logo
6:10 am - 9:43 am
SOF
-
PHL
34h 33m
2 stops
$729United Airlines
ma, aug. 3 - di, aug. 25
Multiple Airlines Logo
10:34 am - 10:20 am
PHL
-
SOF
16h 46m
2 stops
Multiple Airlines Logo
8:00 am - 4:05 pm
SOF
-
PHL
15h 05m
2 stops
$734Multiple Airlines
wo, aug. 12 - wo, aug. 26
United Airlines Logo
8:20 am - 6:40 pm
PHL
-
SOF
27h 20m
2 stops
United Airlines Logo
6:20 am - 4:05 pm
SOF
-
PHL
16h 45m
1 stop
$736United Airlines
zo, aug. 23 - vr, sep. 11

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United Airlines flights from Philadelphia to Sofia

Our best United Airlines deals on Philadelphia to Sofia flight tickets
United Airlines
Aug 3
PHL3:10 pmPhiladelphia
25h 05m
2 stops
SOF11:15 pmSofia
Aug 26
SOF6:20 amSofia
16h 45m
1 stop
PHL4:05 pmPhiladelphia
$706
United Airlines
Aug 3
PHL3:10 pmPhiladelphia
25h 05m
2 stops
SOF11:15 pmSofia
Aug 19
SOF6:20 amSofia
25h 39m
2 stops
PHL12:59 amPhiladelphia
$716
United Airlines
Aug 4
PHL3:25 pmPhiladelphia
24h 25m
2 stops
SOF10:50 pmSofia
Aug 19
SOF6:20 amSofia
25h 39m
2 stops
PHL12:59 amPhiladelphia
$726

Lufthansa flights from Philadelphia to Sofia

Our best Lufthansa deals on Philadelphia to Sofia flight tickets
Lufthansa
Aug 12
PHL5:40 pmPhiladelphia
12h 45m
1 stop
SOF1:25 pmSofia
Aug 26
SOF6:20 amSofia
16h 45m
1 stop
PHL4:05 pmPhiladelphia
$708
Lufthansa
Aug 3
PHL5:40 pmPhiladelphia
22h 00m
1 stop
SOF10:40 pmSofia
Aug 26
SOF6:20 amSofia
16h 45m
1 stop
PHL4:05 pmPhiladelphia
$718
Lufthansa
Aug 3
PHL5:40 pmPhiladelphia
22h 00m
1 stop
SOF10:40 pmSofia
Aug 25
SOF6:40 pmSofia
28h 25m
1 stop
PHL4:05 pmPhiladelphia
$738

momondo Fare Finder

 
Customize your flight search to find flights from Philadelphia to Sofia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated juli 13, 2026.
Use the filters below to find and compare flights from Philadelphia to Sofia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

ma 8/3

3:10 pm-11:15 pm

2 stops25h 05m

Sofia

wo 8/26

6:20 am-4:05 pm

1 stop16h 45m

$706
Quickest round-trip

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

wo 8/12

5:40 pm-1:25 pm

1 stop12h 45m

Sofia

wo 8/26

6:20 am-4:05 pm

1 stop16h 45m

$708

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

wo 8/5

6:10 am-11:15 pm

2 stops34h 05m

Sofia

wo 8/26

6:20 am-4:05 pm

1 stop16h 45m

$711

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

ma 8/3

3:10 pm-11:15 pm

2 stops25h 05m

Sofia

wo 8/19

6:20 am-12:59 am

2 stops25h 39m

$716

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

ma 8/3

5:40 pm-10:40 pm

1 stop22h 00m

Sofia

wo 8/26

6:20 am-4:05 pm

1 stop16h 45m

$718

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

di 8/4

3:25 pm-10:50 pm

2 stops24h 25m

Sofia

wo 8/19

6:20 am-12:59 am

2 stops25h 39m

$726

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

di 8/4

3:25 pm-10:50 pm

2 stops24h 25m

Sofia

di 8/25

6:10 am-9:43 am

2 stops34h 33m

$728

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

ma 8/3

7:45 pm-6:00 pm

2 stops15h 15m

Sofia

di 8/25

6:10 am-9:43 am

2 stops34h 33m

$729

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

wo 8/12

10:34 am-10:20 am

2 stops16h 46m

Sofia

wo 8/26

8:00 am-4:05 pm

2 stops15h 05m

$734

PhiladelphiaSofia

PHL - SOF

PHLSOF

Philadelphia

zo 8/23

8:20 am-6:40 pm

2 stops27h 20m

Sofia

vr 9/11

6:20 am-4:05 pm

1 stop16h 45m

$736

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
1
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See travel insights to Sofia from

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

What is the cheapest month to fly to Sofia?

The cheapest month to fly to Sofia from Philadelphia is in October. Flight prices, which tend to average around $518, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of October, then book flights to Sofia from Philadelphia during November instead. Flights to Sofia in November, while not as cheap as those in October, still average around $540.

Can stopping save me money on Philadelphia to Sofia flights?

You could potentially save up to 47% 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

Fastest flight time

22h 10m

Direct flights

None
The fastest flight from Philadelphia to Sofia takes 22h 10m
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 22h 10m.

  • 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?

  • 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?

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
LufthansaPriceFrom $497Free CancellationRating
6.8
8,133 reviews
Search Lufthansa flights
United AirlinesPriceFrom $540Free CancellationRating
7.4
9,985 reviews
Search United Airlines flights

Traveling to a place near Sofia?

Book flights to Sofia if you plan to visit one of these locations
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.

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wo 8/12
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Fly your favorite airline to Sofia

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
Lufthansa
United Airlines
Turkish Airlines
Austrian Airlines
KLM
LOT
ITA Airways
Air France
SWISS
Air Serbia
JetBlue