Cheap flights from Portland to Denver from $200 PDX → DEN

Found recently, and the cheapest we hold

It is also the cheapest return we hold, of any age.

What have prices looked like?

Over 42 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $163 to $381.

At $381, the cheapest return found recently is at the high end of that range.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other 8-night return fares leaving within 3 days of 24 Dec to compare.

Every date we hold

1 fares on 1 departure dates

Found recently, and the cheapest we hold

What have prices looked like?

Over 17 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $112 to $231.

17 days is a short history, so treat this range as an early guide.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other one-way fares leaving within 3 days of 13 Sept 2027 to compare.

Every date we hold

7 fares on 7 departure dates

Which month looks cheapest?

December 2026 is the cheapest month — from $112.

Return

Fares 14 to 29 days before departure were typically 26% lower than 7 to 13 days before departure.

From the cheapest return each day between 24 Sept and 11 Nov (42 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

One-way

Not enough history yet: in 17 days of one-way prices, 24 Sept to 11 Nov, fewer than 3 booking ranges had prices on 7 days or more.

How much is a return flight from Portland to Denver?

The cheapest return found recently is $381 with Frontier Airlines, 24 Dec to 1 Jan 2027, found 6 days ago.

How much is a one-way flight from Portland to Denver?

The cheapest one-way found recently is $200 with Alaska Airlines, 13 Sept 2027, found 2 days ago. The cheapest one-way we hold, of any age, is $112 with Frontier Airlines, 1 Dec, found 7 days ago. The cheapest one-way fare on each of 7 departure dates is usually $153 to $228.

What is the cheapest month to fly from Portland to Denver?

December 2026 is the cheapest month for a one-way, from $112, 1 Dec, found 7 days ago.

How far ahead should I book a flight from Portland to Denver?

In 42 days of prices between 24 Sept and 11 Nov, return fares 14 to 29 days before departure were typically 26% lower than 7 to 13 days before departure.

Is there a direct flight from Portland to Denver?

Yes, the cheapest nonstop return found recently is $381 with Frontier Airlines, 24 Dec to 1 Jan 2027, found 6 days ago. The cheapest nonstop one-way found recently is $200 with Alaska Airlines, 13 Sept 2027, found 2 days ago.

How long is the flight from Portland to Denver?

The cheapest nonstop one-way found recently, with Alaska Airlines on 13 Sept 2027, takes 2 h 39 min from Portland International Airport (PDX) to Denver International Airport (DEN).

Which airlines have the cheapest flights from Portland to Denver?

Between 23 Nov and 9 Oct 2027, Alaska Airlines has the cheapest one-way on 3 of the 7 departure dates we hold, Frontier Airlines on 2 and United Airlines on 2.