$54 Cheap Flights from Portland (PDX) to Denver (DEN)

View $54 flight on Tue, May 13, 2025Opens in a new window

Popular airlines from Portland International Airport (PDX) to Denver Intl. Airport (DEN)

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Find available prices by choosing your travel dates.

Cheap Flights from Portland to Denver (PDX-DEN)

Prices were available within the past 7 days and start at $54 for one-way flights and $108 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, May 31 - Wed, Jun 4
PDX
Portland
DEN
Denver
$108 Roundtrip, just found
$108
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, May 31 from Portland to Denver, returning Wed, Jun 4, priced at $108 just found
Frontier Airlines
Wed, Jul 23 - Sat, Jul 26
PDX
Portland
DEN
Denver
$122 Roundtrip, found 2 hours ago
$122
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Wed, Jul 23 from Portland to Denver, returning Sat, Jul 26, priced at $122 found 2 hours ago
Frontier Airlines
Wed, Jun 11 - Sat, Jun 14
PDX
Portland
DEN
Denver
$127 Roundtrip, just found
$127
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Jun 11 from Portland to Denver, returning Sat, Jun 14, priced at $127 just found
Frontier Airlines
Wed, Jun 11 - Tue, Jun 17
PDX
Portland
DEN
Denver
$128 Roundtrip, just found
$128
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Jun 11 from Portland to Denver, returning Tue, Jun 17, priced at $128 just found
Frontier Airlines
Wed, Jul 23 - Tue, Jul 29
PDX
Portland
DEN
Denver
$135 Roundtrip, just found
$135
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Jul 23 from Portland to Denver, returning Tue, Jul 29, priced at $135 just found
Frontier Airlines
Tue, Jul 22 - Sat, Jul 26
PDX
Portland
DEN
Denver
$136 Roundtrip, found 8 hours ago
$136
Roundtrip
found 8 hours ago
Select Frontier Airlines flight, departing Tue, Jul 22 from Portland to Denver, returning Sat, Jul 26, priced at $136 found 8 hours ago
Alaska Airlines
Sat, May 31 - Wed, Jun 4
PDX
Portland
DEN
Denver
$143 Roundtrip, just found
$143
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, May 31 from Portland to Denver, returning Wed, Jun 4, priced at $143 just found
Southwest Airlines
Wed, May 21 - Wed, May 28
PDX
Portland
DEN
Denver
$158 Roundtrip, just found
$158
Roundtrip
just found
Select Southwest Airlines flight, departing Wed, May 21 from Portland to Denver, returning Wed, May 28, priced at $158 just found
American Airlines
Wed, Jul 16 - Tue, Jul 22
PDX
Portland
DEN
Denver
$160 Roundtrip, found 5 hours ago
$160
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Wed, Jul 16 from Portland to Denver, returning Tue, Jul 22, priced at $160 found 5 hours ago
United
Wed, Jun 11 - Tue, Jun 17
PDX
Portland
DEN
Denver
$177 Roundtrip, just found
$177
Roundtrip
just found
Select United flight, departing Wed, Jun 11 from Portland to Denver, returning Tue, Jun 17, priced at $177 just found
Flights from Portland (PDX) to Denver (DEN)
Origin airport
Portland Intl.
Destination airport
Denver Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, JetBlue Airways, Southwest Airlines, Sun Country Airlines, United
Roundtrip price
$108
Distance
989 mi

Portland to Denver Flights

The cheapest times to fly from Portland to Denver

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Portland to Denver are during the month of May. You can find some of the cheapest flights from Portland to Denver with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Portland to Denver

Sunday is one of the best days to book for cheap flights from Portland to Denver: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Portland to Denver

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Portland to Denver in 2025. You can also book with separate airlines for your outbound and return journeys, from $54 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Portland to Denver flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Portland to Denver airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How long does it take to fly from Portland Airport to Denver Intl. Airport (DEN)?
United Airlines has a direct flight leaving from PDX at 8:56AM and touching down at Denver Intl. Airport (DEN) at 12:30PM — a flight duration of 2 hours and 34 minutes. Pick a seat, pack some things to keep you busy and the time will rush by.
Is it cheaper to buy a plane ticket from Portland Intl. Airport (PDX) to Denver Intl. Airport (DEN) last minute?
Being spontaneous is a fabulous way to explore the world, but it’s not always the smartest method to track down a cheap airfare. Think about booking your Portland Airport to DIA airport trip in advance instead of leaving it till the last minute. Based on flight pricing and demand studies in 2022, we have found that the best time to book domestic flights is between 28 – 35 days ahead of the departure date, and international flights three to four months in advance. We recommend saving that spontaneity for when you get to your destination!
What airline has the least delays from Portland Airport to DIA airport?
Travel with United Airlines from Portland Airport to Denver Intl. Airport (DEN) and you’re more likely to land at the time printed on your ticket. This airline has the best performance on this route, with 88% of services arriving on time. If your flight is delayed for some reason, the free Expedia App is an easy way to stay up to date. Our helpful app will give you immediate trip alerts, from flight delays to gate changes and the carousel number to collect your luggage.
What airports do you fly into for Denver from Portland?
From Portland, you can reach Denver via Denver Intl. Airport (DEN), Centennial Airport (APA) and Broomfield, CO (BJC-Rocky Mountain Metropolitan). Research which airport is right for you before making your decision. If you settle on Denver Intl. Airport (DEN), it’s around 19 mi east of the city center. Use the dough you save when booking your seat with Expedia to uncover the city’s top sights, such as Empower Field at Mile High and Coors Field.
What are the most popular departure times for flights from PDX Airport to Denver Intl. Airport (DEN)?
Between 1:00 PM - 2:00 PM is when you’ll find many United Airlines flights taking off from Portland Intl. Airport (PDX) to Denver Airport. Our recommendation? Choose a flight that departs earlier in the day. With air traffic yet to build up, your chances of boarding a delay-free flight are higher.
Can I change the date of my flight from PDX Airport to Denver Intl. Airport (DEN)?
Expedia makes it a breeze to make changes to your PDX Airport to DEN trip yourself. Simply log in to the Expedia Trips portal and hit “change flight.” Browse around for new flights and book the one that better suits your plans. You’ll see an estimate of applicable flight change fees. Alternatively, head to our Customer Service portal to chat to our Virtual Agent and quickly get answers to all your questions.

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*Available to One Key members.