Cheap flights from Denver to Portland from $125

The cheapest month to fly to Portland from Denver is in January. Flight prices, which tend to average around $171, are often lower during this time because this is during the off-season. If you don’t want to visit Portland in January, then you should wait until April to fly from Denver, when ticket prices are also cheap, with an average price of $187.

The cheapest day to depart on your flight to Portland is on a Saturday when prices can be found for as low as $258. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Portland is Monday, with ticket prices averaging around $340.

The cheapest time of day to fly to Portland is in the afternoon when flights can be purchased for as low as $269. At noon is when there is more demand to fly to Portland, so prices are often more expensive at around $312 per ticket.

Fly from Denver Intl to Portland for the best Denver Intl - Portland flight prices

You are more likely to see cheaper flights to Portland from Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland for around $258 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland from Denver for as low as $170 on momondo.

There are 4 cabin classes available to choose from on Denver to Portland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Frontier, Alaska Airlines, and Sun Country Air are the most popular carriers operating from Denver Intl to Portland

United Airlines, Frontier and Alaska Airlines are the top three most popular airlines that fly to Portland from Denver according to our data. United Airlines is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Portland. Keep in mind that there are 5 different airlines that fly to Portland on a routine basis, so you have a few additional options to choose from.

The number of flights available between Denver and Portland is 4 per day as of October 2026. The most frequent departure time is 4:00PM, with 45% of daily flights leaving at noon.

As of October 2026, 29 flights take off from Denver and land in Portland each week. The most common flight departure day for this route is Wed, with 55% of weekly flights taking off on this day.