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Cheap flights from Knoxville (TYS) 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 Knoxville (TYS) to Sofia (SOF)

How to find the cheapest flight from Knoxville (TYS) to Sofia (SOF)
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How to find the cheapest flight from Knoxville (TYS) to Sofia (SOF)
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How to find the cheapest flight from Knoxville (TYS) to Sofia (SOF)
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Cheap flights from Knoxville to Sofia in January , February 2026

31 Jan - 16 Feb $ 630.00
TYS
Knoxville
United Airlines
2 STOPS
SOF
Sofia
SOF
Sofia
United Airlines
2 STOPS
TYS
Knoxville
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31 Jan - 16 Feb $ 642.00
TYS
Knoxville
United Airlines
2 STOPS
SOF
Sofia
SOF
Sofia
United Airlines
2 STOPS
TYS
Knoxville
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31 Jan - 16 Feb $ 650.00
TYS
Knoxville
United Airlines
2 STOPS
SOF
Sofia
SOF
Sofia
United Airlines
2 STOPS
TYS
Knoxville
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Last minute flights from Knoxville to Sofia

25 Jan - 02 Feb $ 797.00
TYS
Knoxville
Allegiant Air
2 STOPS
SOF
Sofia
SOF
Sofia
Allegiant Air
3 STOPS
TYS
Knoxville
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22 Jan - 02 Feb $ 840.00
TYS
Knoxville
Allegiant Air
2 STOPS
SOF
Sofia
SOF
Sofia
Allegiant Air
3 STOPS
TYS
Knoxville
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25 Jan - 01 Feb $ 966.00
TYS
Knoxville
Allegiant Air
2 STOPS
SOF
Sofia
SOF
Sofia
Allegiant Air
3 STOPS
TYS
Knoxville
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One-way flights to Sofia from Knoxville

6:45 AM - 3:30 PM
United Airlines
2 Stops
28h 35m
TYS - SOF
$ 242
Kiwi
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2:25 PM - 10:10 AM
United Airlines
2 Stops
15h 35m
TYS - SOF
$ 243
Kiwi
Pick dates
2:25 PM - 10:25 AM
United Airlines
2 Stops
15h 50m
TYS - SOF
$ 353
Kiwi
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How to find the cheapest flight from Knoxville (TYS) to Sofia (SOF)

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