HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Denver

$58+ Cheap flights from Portland to Denver (PDX - DEN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/29. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — DEN
Feb 2 — Feb 91
Mon 2/2
Mon 2/9
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to Denver with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Portland to Denver Intl are usually found in January or August, booked 29 days in advance, depart on a Friday or Thursday and return on a Saturday

Cheap flight deals from Portland to Denver

Cheapest flights from Portland to Denver
Explore the most affordable flight options available from Portland to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 3, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:05 amPDX - DEN
Nonstop2h 37mMultiple Airlines
Mon 3/99:10 amDEN - PDX
Nonstop2h 59mMultiple Airlines
Deal found 1/3$118
This Kiwi.com deal was found by Cheapflights users on 1/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1212:04 pmPDX - DEN
Nonstop2h 37mFrontier
Tue 3/1710:40 pmDEN - PDX
1 stop11h 18mFrontier
Deal found 1/1$120
This Kiwi.com deal was found by Cheapflights users on 1/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/1312:04 pmPDX - DEN
Nonstop2h 37mFrontier
Tue 3/1710:40 pmDEN - PDX
1 stop11h 18mFrontier
Deal found 1/3$121
This Kiwi.com deal was found by Cheapflights users on 1/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/72:47 pmPDX - DEN
Nonstop2h 41mMultiple Airlines
Fri 4/109:55 amDEN - PDX
Nonstop3h 00mMultiple Airlines
Deal found 1/2$123
This Kiwi.com deal was found by Cheapflights users on 1/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/169:38 pmPDX - DEN
1 stop11h 06mFrontier
Thu 3/199:10 amDEN - PDX
Nonstop2h 59mFrontier
Deal found 1/1$124
This Kiwi.com deal was found by Cheapflights users on 1/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/56:56 pmPDX - DEN
2 stops29h 01mMultiple Airlines
Sun 3/89:10 amDEN - PDX
Nonstop2h 59mMultiple Airlines
Deal found 1/2$125
This Kiwi.com deal was found by Cheapflights users on 1/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/2712:04 pmPDX - DEN
Nonstop2h 37mFrontier
Mon 3/309:10 amDEN - PDX
Nonstop2h 59mFrontier
Deal found 1/3$126
This Expedia deal was found by Cheapflights users on 1/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/267:05 amPDX - DEN
Nonstop2h 37mMultiple Airlines
Sun 3/89:10 amDEN - PDX
Nonstop2h 59mMultiple Airlines
Deal found 1/3$127
This Kiwi.com deal was found by Cheapflights users on 1/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/133:52 pmPDX - DEN
1 stop7h 07mMultiple Airlines
Sun 3/159:10 amDEN - PDX
Nonstop2h 59mMultiple Airlines
Deal found 1/1$128
This Kiwi.com deal was found by Cheapflights users on 1/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/113:52 pmPDX - DEN
1 stop4h 31mMultiple Airlines
Fri 3/209:10 amDEN - PDX
Nonstop2h 59mMultiple Airlines
Deal found 1/1$129
This Kiwi.com deal was found by Cheapflights users on 1/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/269:22 pmPDX - DEN
1 stop12h 10mFrontier
Sun 2/110:29 pmDEN - PDX
1 stop13h 49mFrontier
Deal found 1/2$132
This Kiwi.com deal was found by Cheapflights users on 1/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/68:53 amPDX - DEN
2 stops15h 04mFrontier
Fri 3/139:10 amDEN - PDX
Nonstop2h 59mFrontier
Deal found 1/2$134

Find flight deals from Portland to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 3, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$118
(Kiwi.com)

One-way from

$58
(Super.com)

Popular in

December

Cheapest in

January

Average price

$165

Good round-trip deal

$272 or less

Good one-way deal

$158 or less
Provider with most accurate pricing for Portland-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Denver Intl flights.
Search Deals
From Portland to Denver Intl
Search Deals
One-way flight from Portland to Denver Intl
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($10 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Portland to Denver Intl.
Search Deals
Price to beat on a one-way flight from Portland to Denver Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 3, 2026.
Use the filters below to find and compare flights from Portland to Denver that are best for you.

Fly from

Portland

Fly to

Denver

Route

Depart

Return

Price

PortlandDenver

PDX - DEN

PDXDEN

Portland

Sat 1/24

5:20 am-8:50 am

Nonstop2h 30m

Denver Intl

Wed 1/28

8:25 pm-10:15 pm

Nonstop2h 50m

$137

PortlandDenver

PDX - DEN

PDXDEN

Portland

Sat 1/24

1:24 pm-4:57 pm

Nonstop2h 33m

Denver Intl

Tue 1/27

7:15 pm-9:12 pm

Nonstop2h 57m

$137

PortlandDenver

PDX - DEN

PDXDEN

Portland

Tue 3/3

7:05 am-10:42 am

Nonstop2h 37m

Denver Intl

Sat 3/7

11:38 am-1:38 pm

Nonstop3h 00m

$137

PortlandDenver

PDX - DEN

PDXDEN

Portland

Sat 1/24

5:20 am-8:50 am

Nonstop2h 30m

Denver Intl

Tue 1/27

6:00 am-10:50 am

1 stop5h 50m

$147

PortlandDenver

PDX - DEN

PDXDEN

Portland

Sat 5/9

7:00 am-10:50 am

Nonstop2h 50m

Denver Intl

Mon 5/11

6:07 pm-7:54 pm

Nonstop2h 47m

$147

PortlandDenver

PDX - DEN

PDXDEN

Portland

Tue 1/27

7:21 am-10:53 am

Nonstop2h 32m

Denver Intl

Mon 2/2

11:49 am-1:44 pm

Nonstop2h 55m

$147

PortlandDenver

PDX - DEN

PDXDEN

Portland

Sat 1/24

5:20 am-8:50 am

Nonstop2h 30m

Denver Intl

Sun 1/25

11:50 am-1:45 pm

Nonstop2h 55m

$147

PortlandDenver

PDX - DEN

PDXDEN

Portland

Sat 1/24

5:15 pm-11:25 pm

1 stop5h 10m

Denver Intl

Wed 1/28

6:23 pm-11:55 pm

1 stop6h 32m

$157

PortlandDenver

PDX - DEN

PDXDEN

Portland

Sat 1/24

1:39 pm-7:58 pm

1 stop5h 19m

Denver Intl

Tue 1/27

12:30 pm-6:50 pm

1 stop7h 20m

$157

PortlandDenver

PDX - DEN

PDXDEN

Portland

Sat 1/31

12:05 pm-6:30 pm

1 stop5h 25m

Denver Intl

Sat 2/7

2:50 pm-4:40 pm

Nonstop2h 50m

$157

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/3

Showing 1-10 of 20 results
1
2

Compare providers for flights from Portland to Denver

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Denver in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland-Denver flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Portland-Denver flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Portland-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-Denver flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Portland to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Portland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portland to Denver

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

Use this chart to determine the optimal time to book a round-trip flight from Portland to Denver. Price data was last updated on December 26, 2025.

The best time to book flights from Portland to Denver is 29 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Portland to Denver?

Currently, February is the cheapest month in which you can book a flight from Portland to Denver (average of $39). Flying from Portland to Denver in July is currently the most expensive (average of $98). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PDX to DEN?

Find hourly flight availability from Portland to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 3, 2026.

A simple way to save on the total cost of your ticket is to fly from Portland to Denver in the evening. If you’re flexible enough to do this you can expect to save up to 13% on your trip compared to booking a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Portland to Denver. Price data was last updated on December 27, 2025.

Travelers seeking maximum savings on their Portland to Denver flight should consider departing on Saturday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for Portland to Denver flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Portland to Denver trip
Airlines
Frontier

Frontier offers extra comfort seats with 32” separation for a fee, enhancing travel comfort.


Frontier's Zone 1 boarding available with carry-on purchase or special fare bundle.

Read more about FrontierBy Marisa Garcia
United Airlines

United's Economy Plus offers extra legroom seats towards the front of the economy cabin.


United's MileagePlus program allows pooling miles, useful for family travel.

Read more about United AirlinesBy Harriet Baskas
Airports
PDX

PDX offers Express Lanes for expedited security, available to first and business class ticket holders and elite status members of major airlines.

Read more about PDXBy Brandon Schultz
DEN

Take the A Line train from DEN to Union Station in 37 minutes, running every 15 minutes for convenient city access.

Read more about DENBy Emily Zemler
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Frontier

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Brandon Schultz

Brandon Schultz

Expert on PDX

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
Emily Zemler

Emily Zemler

Expert on DEN

Emily Zemler

Emily Zemler

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated January 3, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Hawaiian Airlines from Portland to Denver to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,631 reviews

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
8.0
Very good
11,631 reviews
Alaska Airlines
8.0
Very good
11,631 reviews

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Southwest
8.0
Very good
4,252 reviews
Alaska Airlines
8.0
Very good
11,631 reviews

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Hawaiian Airlines
7.8
Good
2,823 reviews
Alaska Airlines
8.0
Very good
11,631 reviews

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
United Airlines
7.4
Good
9,138 reviews
Alaska Airlines
8.0
Very good
11,631 reviews

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Frontier
5.7
Fair
3,063 reviews
Alaska Airlines
8.0
Very good
11,631 reviews

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Related info for your journey

Find useful and relevant information for your journey from Portland to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Portland to Denver?

    If you book a flight from Portland to Denver, you will be flying from Portland to Denver Intl. Flights to Denver Intl (DEN) from Portland (PDX) take 2h 23m for a nonstop flight. There are 8 flights from Portland to Denver per day from 6 airlines.

  • How popular is this Portland to Denver flight route?

    This flight path from Portland to Denver Intl was viewed by 222 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Portland to Denver?

    A quick flight from Portland to Denver can take about 2h 30m. Southwest provides one of the quickest options available for as low as $137. There are 989 mi between Portland and Denver. Generally, flights for this route are nonstop.

  • What are the cheapest airlines flying from Portland to Denver round-trip?

    Cheapflights users have booked flights from Portland to Denver round-trip from $55. Other airlines that can offer you cheap pricing are Delta, from $88, and Hawaiian Airlines, from $88. Users have found that Frontier is 72% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Portland to Denver one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $34. However, be on the lookout for offers from Delta and Alaska Airlines, as they are both options that can get you from Portland to Denver for a low price.

  • What are the most reliable airlines from Portland to Denver?

    The top 3 most reliable airlines when flying from Portland to Denver are SkyWest Airlines (100%), Alaska Airlines (91%) and United Airlines (91%).

  • What are the cheapest flights from Portland to Denver?

    While on average a flight from Portland to Denver is generally $768, our data shows the cheapest flight currently is $78. When looking at the most popular route, (Portland - Denver Intl), you can expect to pay $97 for that flight.

  • Can I find deals for flights from Portland to Denver that include hotel bookings?

    Yes. In addition to deals on Portland to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Denver.

  • Can I find deals for business class flights from Portland to Denver?

    Yes. Cheapflights offers flight deals from Portland to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland to Denver?

    Currently, February is the cheapest month in which you can book a flight from Portland to Denver (average of $39). Flying from Portland to Denver in July is currently the most expensive (average of $98). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Thornton
Black Hawk
Broomfield
Westminster
Golden
Greeley
Lone Tree
Lakewood
Wheat Ridge
Winter Park
Cripple Creek
Silverthorne
Central City
Frisco
Manitou Springs
Fort Morgan
Brighton
Longmont
Evergreen
Idaho Springs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to Denver

See prices for flight routes from nearby airports that may be better suited for you.
Boise to Denver flights
Eugene to Denver flights
Redmond to Denver flights
Medford to Denver flights
Eugene to Colorado Springs flights
Portland to Grand Junction flights
Portland to Durango flights
Portland to Colorado Springs flights
Portland to Montrose flights
Redmond to Aspen flights
Portland to Gunnison flights
Boise to Colorado Springs flights
Medford to Colorado Springs flights
Portland to Hayden flights
Eugene to Montrose flights
Portland to Vail flights
Boise to Montrose flights
Portland to Aspen flights
Redmond to Colorado Springs flights
Medford to Durango flights
Redmond to Durango flights
Medford to Montrose flights
Eugene to Gunnison flights
Medford to Hayden flights
Medford to Gunnison flights
Medford to Grand Junction flights
Medford to Vail flights
Medford to Aspen flights
Yakima to Denver flights
North Bend to Denver flights

Top 6 airlines flying from Portland to Denver

Discover the top 6 airlines that operate flights from Portland to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$148FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$98Average$234FlexibilityNo cancel feeOn-time85%
DeltaCheapest$128Average$287FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$151Average$287FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$156Average$261FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$156Average$255FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.