Earn point on your loyalty program!arrow arc left

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

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

How to find the cheapest flight from Knoxville (TYS) to Sofia (SOF)

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.
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.

Cheap flights from Knoxville to Sofia in June , July 2026

30 Jun - 10 Jul $ 1,527.00
TYS
Knoxville
Allegiant Air
3 STOPS
SOF
Sofia
SOF
Sofia
Allegiant Air
3 STOPS
TYS
Knoxville
Pick dates
30 Jun - 10 Jul $ 1,616.00
TYS
Knoxville
Allegiant Air
3 STOPS
SOF
Sofia
SOF
Sofia
Allegiant Air
3 STOPS
TYS
Knoxville
Pick dates
30 Jun - 27 Jul $ 1,625.00
TYS
Knoxville
Allegiant Air
3 STOPS
SOF
Sofia
SOF
Sofia
Allegiant Air
3 STOPS
TYS
Knoxville
Pick dates

Last minute flights from Knoxville to Sofia

29 Jun - 02 Jul $ 1,956.00
TYS
Knoxville
Allegiant Air
3 STOPS
SOF
Sofia
SOF
Sofia
Allegiant Air
3 STOPS
TYS
Knoxville
Pick dates
29 Jun - 02 Jul $ 2,015.00
TYS
Knoxville
Allegiant Air
2 STOPS
SOF
Sofia
SOF
Sofia
Allegiant Air
3 STOPS
TYS
Knoxville
Pick dates
29 Jun - 02 Jul $ 2,023.00
TYS
Knoxville
WestJet
2 STOPS
SOF
Sofia
SOF
Sofia
WestJet
3 STOPS
TYS
Knoxville
Pick dates

One-way flights to Sofia from Knoxville

7:22 PM - 8:10 PM
Wizz Air
3 Stops
44h 43m
TYS - SOF
$ 775
Kiwi
Pick dates
8:30 AM - 12:45 PM
Wizz Air
3 Stops
24h 15m
TYS - SOF
$ 858
Kiwi
Pick dates
12:49 PM - 4:35 PM
Wizz Air
3 Stops
23h 41m
TYS - SOF
$ 994
Kiwi
Pick dates

How to find the cheapest flight from Knoxville (TYS) to Sofia (SOF)

Related info for your journey
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.
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.