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

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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 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 March , April 2026

31 Mar - 08 Apr $ 800.00
TYS
Knoxville
United Airlines
1 STOPS
LIS
Lisbon
LIS
Lisbon
United Airlines
1 STOPS
TYS
Knoxville
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23 Mar - 09 Apr $ 899.00
TYS
Knoxville
Allegiant Air
1 STOPS
LIS
Lisbon
LIS
Lisbon
Allegiant Air
2 STOPS
TYS
Knoxville
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31 Mar - 07 Apr $ 975.00
TYS
Knoxville
United Airlines
1 STOPS
LIS
Lisbon
LIS
Lisbon
United Airlines
1 STOPS
TYS
Knoxville
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Last minute flights from Knoxville to Lisbon

23 Mar - 02 Apr $ 894.00
TYS
Knoxville
Allegiant Air
1 STOPS
LIS
Lisbon
LIS
Lisbon
Allegiant Air
2 STOPS
TYS
Knoxville
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23 Mar - 02 Apr $ 943.00
TYS
Knoxville
Allegiant Air
1 STOPS
LIS
Lisbon
LIS
Lisbon
Allegiant Air
3 STOPS
TYS
Knoxville
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23 Mar - 01 Apr $ 1,051.00
TYS
Knoxville
Allegiant Air
1 STOPS
LIS
Lisbon
LIS
Lisbon
Allegiant Air
2 STOPS
TYS
Knoxville
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One-way flights to Lisbon from Knoxville

7:25 PM - 11:05 PM
United Airlines
1 Stops
10h 50m
TYS - LIS
$ 422
Kiwi
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2:21 PM - 8:25 PM
United Airlines
2 Stops
12h 49m
TYS - LIS
$ 500
Kiwi
Pick dates
7:25 PM - 10:05 PM
United Airlines
1 Stops
9h 50m
TYS - LIS
$ 501
Kiwi
Pick dates

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.