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Cheap flights from Philadelphia (PHL) to Sofia (SOF)

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0 Children (2~11)
0 Infants (0~2)
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How to find the cheapest flight from Philadelphia (PHL) to Sofia (SOF)

How to find the cheapest flight from Philadelphia (PHL) to Sofia (SOF)
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How to find the cheapest flight from Philadelphia (PHL) to Sofia (SOF)
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How to find the cheapest flight from Philadelphia (PHL) to Sofia (SOF)
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Cheap flights from Philadelphia to Sofia in December 2025 , January 2026

31 Dec - 08 Jan $ 812.00
PHL
Philadelphia
Austrian Airlines
2 STOPS
SOF
Sofia
SOF
Sofia
Austrian Airlines
2 STOPS
PHL
Philadelphia
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30 Dec - 08 Jan $ 893.00
PHL
Philadelphia
Austrian Airlines
2 STOPS
SOF
Sofia
SOF
Sofia
Austrian Airlines
2 STOPS
PHL
Philadelphia
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31 Dec - 08 Jan $ 907.00
PHL
Philadelphia
Austrian Airlines
2 STOPS
SOF
Sofia
SOF
Sofia
Austrian Airlines
2 STOPS
PHL
Philadelphia
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Last minute flights from Philadelphia to Sofia

30 Dec - 01 Jan $ 1,581.00
PHL
Philadelphia
Spirit Airlines
3 STOPS
SOF
Sofia
SOF
Sofia
Spirit Airlines
3 STOPS
PHL
Philadelphia
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30 Dec - 01 Jan $ 1,609.00
PHL
Philadelphia
Frontier Airlines
3 STOPS
SOF
Sofia
SOF
Sofia
Frontier Airlines
3 STOPS
PHL
Philadelphia
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30 Dec - 01 Jan $ 1,658.00
PHL
Philadelphia
Lufthansa
3 STOPS
SOF
Sofia
SOF
Sofia
Lufthansa
3 STOPS
PHL
Philadelphia
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One-way flights to Sofia from Philadelphia

6:36 PM - 7:30 PM
Lufthansa
2 Stops
21h 9m
PHL - SOF
$ 567
Kiwi
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10:39 AM - 10:10 AM
United Airlines
2 Stops
19h 21m
PHL - SOF
$ 1,202
Kiwi
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2:50 PM - 10:10 AM
United Airlines
2 Stops
15h 10m
PHL - SOF
$ 1,773
Kiwi
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How to find the cheapest flight from Philadelphia (PHL) to Sofia (SOF)

Related info for your journey
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How to find the cheapest flight from Philadelphia (PHL) to Sofia (SOF)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Philadelphia (PHL) to Sofia (SOF)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.