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Cheap flights from Knoxville (TYS) to Lisbon (LIS)

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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 Knoxville (TYS) to Lisbon (LIS)

How to find the cheapest flight from Knoxville (TYS) to Lisbon (LIS)
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How to find the cheapest flight from Knoxville (TYS) to Lisbon (LIS)
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How to find the cheapest flight from Knoxville (TYS) to Lisbon (LIS)
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Cheap flights from Knoxville to Lisbon in December 2025 , January 2026

31 Dec - 26 Jan $ 930.00
TYS
Knoxville
Allegiant Air
2 STOPS
LIS
Lisbon
LIS
Lisbon
Allegiant Air
2 STOPS
TYS
Knoxville
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26 Dec - 10 Jan $ 4,165.00
TYS
Knoxville
Finnair
2 STOPS
LIS
Lisbon
LIS
Lisbon
Finnair
2 STOPS
TYS
Knoxville
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26 Dec - 03 Jan $ 4,178.00
TYS
Knoxville
Finnair
2 STOPS
LIS
Lisbon
LIS
Lisbon
Finnair
2 STOPS
TYS
Knoxville
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Last minute flights from Knoxville to Lisbon

24 Dec - 01 Jan $ 1,600.00
TYS
Knoxville
United Airlines
1 STOPS
LIS
Lisbon
LIS
Lisbon
United Airlines
1 STOPS
TYS
Knoxville
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24 Dec - 01 Jan $ 1,600.00
TYS
Knoxville
United Airlines
1 STOPS
LIS
Lisbon
LIS
Lisbon
United Airlines
1 STOPS
TYS
Knoxville
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24 Dec - 31 Dec $ 1,743.00
TYS
Knoxville
United Airlines
1 STOPS
LIS
Lisbon
LIS
Lisbon
United Airlines
1 STOPS
TYS
Knoxville
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One-way flights to Lisbon from Knoxville

7:23 PM - 10:05 PM
United Airlines
1 Stops
9h 52m
TYS - LIS
$ 463
Kiwi
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9:50 AM - 10:05 PM
United Airlines
1 Stops
19h 25m
TYS - LIS
$ 463
Kiwi
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7:23 PM - 10:05 PM
United Airlines
1 Stops
9h 52m
TYS - LIS
$ 549
Kiwi
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How to find the cheapest flight from Knoxville (TYS) to Lisbon (LIS)

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