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Cheap flights from Knoxville (TYS) to Portland (PDX)

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0 Children (2~11)
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How to find the cheapest flight from Knoxville (TYS) to Portland (PDX)

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

21 Dec - 19 Jan $ 580.00
TYS
Knoxville
Allegiant Air
1 STOPS
PDX
Portland
PDX
Portland
Allegiant Air
1 STOPS
TYS
Knoxville
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18 Dec - 19 Jan $ 588.00
TYS
Knoxville
Allegiant Air
1 STOPS
PDX
Portland
PDX
Portland
Allegiant Air
1 STOPS
TYS
Knoxville
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20 Dec - 01 Jan $ 713.00
TYS
Knoxville
United Airlines
1 STOPS
PDX
Portland
PDX
Portland
United Airlines
1 STOPS
TYS
Knoxville
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Last minute flights from Knoxville to Portland

21 Dec - 01 Jan $ 664.00
TYS
Knoxville
Frontier Airlines
1 STOPS
PDX
Portland
PDX
Portland
Frontier Airlines
2 STOPS
TYS
Knoxville
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21 Dec - 01 Jan $ 667.00
TYS
Knoxville
Allegiant Air
1 STOPS
PDX
Portland
PDX
Portland
Allegiant Air
1 STOPS
TYS
Knoxville
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18 Dec - 01 Jan $ 672.00
TYS
Knoxville
Frontier Airlines
1 STOPS
PDX
Portland
PDX
Portland
Frontier Airlines
2 STOPS
TYS
Knoxville
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One-way flights to Portland from Knoxville

7:00 AM - 10:26 AM
United Airlines
1 Stops
9h 20m
TYS - PDX
$ 258
Kiwi
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4:04 PM - 7:10 PM
United Airlines
1 Stops
8h 3m
TYS - PDX
$ 301
Kiwi
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6:45 AM - 9:08 AM
United Airlines
1 Stops
8h 13m
TYS - PDX
$ 344
Kiwi
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How to find the cheapest flight from Knoxville (TYS) to Portland (PDX)

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How to find the cheapest flight from Knoxville (TYS) to Portland (PDX)
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 Portland (PDX)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.