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Cheap flights from Portland (PDX) to Denver (DEN)

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How to find the cheapest flight from Portland (PDX) to Denver (DEN)

How to find the cheapest flight from Portland (PDX) to Denver (DEN)
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How to find the cheapest flight from Portland (PDX) to Denver (DEN)
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How to find the cheapest flight from Portland (PDX) to Denver (DEN)
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Cheap flights from Portland to Denver in September , October 2026

25 Sep - 20 Oct $ 230.00
PDX
Portland
Frontier Airlines
DIRECT
DEN
Denver
DEN
Denver
Frontier Airlines
DIRECT
PDX
Portland
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18 Sep - 01 Oct $ 290.00
PDX
Portland
Frontier Airlines
1 STOPS
DEN
Denver
DEN
Denver
Frontier Airlines
DIRECT
PDX
Portland
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17 Sep - 01 Oct $ 393.00
PDX
Portland
Alaska Airlines
DIRECT
DEN
Denver
DEN
Denver
Alaska Airlines
DIRECT
PDX
Portland
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Last minute flights from Portland to Denver

18 Sep - 01 Oct $ 299.00
PDX
Portland
Frontier Airlines
1 STOPS
DEN
Denver
DEN
Denver
Frontier Airlines
1 STOPS
PDX
Portland
Pick dates
29 Sep - 30 Sep $ 337.00
PDX
Portland
Alaska Airlines
DIRECT
DEN
Denver
DEN
Denver
Alaska Airlines
DIRECT
PDX
Portland
Pick dates
17 Sep - 30 Sep $ 548.00
PDX
Portland
United Airlines
DIRECT
DEN
Denver
DEN
Denver
United Airlines
DIRECT
PDX
Portland
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One-way flights to Denver from Portland

11:02 AM - 2:28 PM
Frontier Airlines
1 Stops
5h 57m
PDX - DEN
$ 159
Kiwi
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2:51 PM - 2:51 PM
Alaska Airlines
0 Stops
2h 41m
PDX - DEN
$ 167
Kiwi
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7:07 PM - 7:07 PM
United Airlines
0 Stops
2h 34m
PDX - DEN
$ 284
Kiwi
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How to find the cheapest flight from Portland (PDX) to Denver (DEN)

Related info for your journey
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How to find the cheapest flight from Portland (PDX) to Denver (DEN)
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 Portland (PDX) to Denver (DEN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.