Cheap flights from Colorado to Portland from $116

The cheapest month to fly to Portland from Colorado is in January. Flight prices, which tend to average around $29, 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 Colorado, when ticket prices are also cheap, with an average price of $45.

The cheapest day to depart on your flight to Portland is on a Saturday when prices can be found for as low as $222. 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 Sunday, with ticket prices averaging around $301.

The cheapest time of day to fly to Portland is in the evening when flights can be purchased for as low as $223. At noon is when there is more demand to fly to Portland, so prices are often more expensive at around $290 per ticket.

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

You are more likely to see cheaper flights to Portland from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland for around $228 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland from Colorado for as low as $171 on momondo.

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

Frontier, Southwest, and United Airlines are the most popular carriers operating from Colorado to Portland

Frontier, United Airlines and Alaska Airlines are the top three most popular airlines that fly to Portland from Colorado according to our data. Frontier 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 7 different airlines that fly to Portland on a routine basis, so you have a few additional options to choose from.

10 flights are operational daily from Colorado to Portland as of June 2026. The most popular departure time for this route is 7:00PM, with 37% of flights per day taking off in the evening.

As of June 2026, there are 74 flights per week flying from Colorado to Portland. The most common day of the week flights depart is Mon, with 23% of flights taking off on this day.