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

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1 Adults (11+)
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 January , February 2026

27 Jan - 03 Feb $ 492.00
PHL
Philadelphia
United Airlines
2 STOPS
SOF
Sofia
SOF
Sofia
United Airlines
2 STOPS
PHL
Philadelphia
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27 Jan - 03 Feb $ 497.00
PHL
Philadelphia
United Airlines
2 STOPS
SOF
Sofia
SOF
Sofia
United Airlines
2 STOPS
PHL
Philadelphia
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29 Jan - 11 Feb $ 719.00
PHL
Philadelphia
United Airlines
1 STOPS
SOF
Sofia
SOF
Sofia
United Airlines
2 STOPS
PHL
Philadelphia
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Last minute flights from Philadelphia to Sofia

27 Jan - 01 Feb $ 892.00
PHL
Philadelphia
Frontier Airlines
2 STOPS
SOF
Sofia
SOF
Sofia
Frontier Airlines
2 STOPS
PHL
Philadelphia
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26 Jan - 01 Feb $ 948.00
PHL
Philadelphia
Frontier Airlines
3 STOPS
SOF
Sofia
SOF
Sofia
Frontier Airlines
3 STOPS
PHL
Philadelphia
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27 Jan - 31 Jan $ 1,264.00
PHL
Philadelphia
United Airlines
2 STOPS
SOF
Sofia
SOF
Sofia
United Airlines
2 STOPS
PHL
Philadelphia
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One-way flights to Sofia from Philadelphia

3:01 PM - 10:25 AM
United Airlines
2 Stops
15h 14m
PHL - SOF
$ 225
Kiwi
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7:45 PM - 10:35 AM
United Airlines
2 Stops
35h 5m
PHL - SOF
$ 617
Kiwi
Pick dates
3:01 PM - 10:25 AM
United Airlines
2 Stops
15h 14m
PHL - SOF
$ 955
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.