Earn point on your loyalty program!arrow arc left

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

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 Portland (PDX) to Denver (DEN)

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.
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.

Cheap flights from Portland to Denver in February , March 2026

28 Feb - 23 Mar $ 328.00
PDX
Portland
Frontier Airlines
DIRECT
DEN
Denver
DEN
Denver
Frontier Airlines
DIRECT
PDX
Portland
Pick dates
28 Feb - 11 Mar $ 408.00
PDX
Portland
Frontier Airlines
DIRECT
DEN
Denver
DEN
Denver
Frontier Airlines
1 STOPS
PDX
Portland
Pick dates
28 Feb - 09 Mar $ 436.00
PDX
Portland
Frontier Airlines
DIRECT
DEN
Denver
DEN
Denver
Frontier Airlines
DIRECT
PDX
Portland
Pick dates

Last minute flights from Portland to Denver

28 Feb - 28 Feb $ 566.00
PDX
Portland
Alaska Airlines
DIRECT
DEN
Denver
DEN
Denver
Alaska Airlines
1 STOPS
PDX
Portland
Pick dates
28 Feb - 28 Feb $ 603.00
PDX
Portland
Alaska Airlines
DIRECT
DEN
Denver
DEN
Denver
Alaska Airlines
1 STOPS
PDX
Portland
Pick dates
28 Feb - 28 Feb $ 622.00
PDX
Portland
United Airlines
DIRECT
DEN
Denver
DEN
Denver
United Airlines
DIRECT
PDX
Portland
Pick dates

One-way flights to Denver from Portland

7:05 AM - 7:05 AM
Alaska Airlines
0 Stops
2h 37m
PDX - DEN
$ 277
Kiwi
Pick dates
8:30 AM - 8:30 AM
United Airlines
0 Stops
2h 33m
PDX - DEN
$ 279
Kiwi
Pick dates
5:05 AM - 5:05 AM
United Airlines
0 Stops
2h 33m
PDX - DEN
$ 279
Kiwi
Pick dates

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

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 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.