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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 May , June 2026

30 May - 05 Jun $ 1,128.00
TYS
Knoxville
Allegiant Air
3 STOPS
SOF
Sofia
SOF
Sofia
Allegiant Air
3 STOPS
TYS
Knoxville
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30 May - 05 Jun $ 1,141.00
TYS
Knoxville
Allegiant Air
3 STOPS
SOF
Sofia
SOF
Sofia
Allegiant Air
3 STOPS
TYS
Knoxville
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30 May - 05 Jun $ 1,152.00
TYS
Knoxville
Allegiant Air
3 STOPS
SOF
Sofia
SOF
Sofia
Allegiant Air
3 STOPS
TYS
Knoxville
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Last minute flights from Knoxville to Sofia

29 May - 01 Jun $ 1,384.00
TYS
Knoxville
Allegiant Air
3 STOPS
SOF
Sofia
SOF
Sofia
Allegiant Air
3 STOPS
TYS
Knoxville
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29 May - 01 Jun $ 1,402.00
TYS
Knoxville
Allegiant Air
3 STOPS
SOF
Sofia
SOF
Sofia
Allegiant Air
3 STOPS
TYS
Knoxville
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30 May - 01 Jun $ 1,499.00
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

7:30 AM - 11:50 AM
Swiss International Air Lines
2 Stops
24h 25m
TYS - SOF
$ 797
Kiwi
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3:25 PM - 9:55 AM
United Airlines
2 Stops
38h 40m
TYS - SOF
$ 962
Kiwi
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10:45 AM - 7:45 AM
United Airlines
2 Stops
17h 10m
TYS - SOF
$ 3,431
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.