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$78+ 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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — DEN
Aug 2 — Aug 91
Sat 8/2
Sat 8/9
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to Denver Intl are usually found in September or October, booked 30 days in advance, depart on a Friday or Saturday and return on a Saturday

Cheap 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 July 28, 2025.

Round-trip from

$107
(FlightHub)

One-way from

$78
(FlightHub)

Popular in

March

Cheapest in

September

Average price

$196

Good round-trip deal

$183 or less

Good one-way deal

$116 or less
From Portland to Denver Intl
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One-way flight from Portland to Denver Intl
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Highest demand for flights based on searches. 5% potential increase in price ($10 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Portland to Denver Intl.
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Price to beat on a one-way flight from Portland to Denver Intl.
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Find 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 July 28, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 7/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/186:05 amPDX - DEN
Nonstop2h 39mFrontier
Sun 9/2810:29 pmDEN - PDX
Nonstop2h 43mFrontier
Deal found 7/28$105
This Southwest deal was found by Cheapflights users on 7/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/206:50 amPDX - DEN
Nonstop2h 30mSouthwest
Sat 9/277:55 pmDEN - PDX
Nonstop2h 35mSouthwest
Deal found 7/28$157
This Hawaiian Airlines deal was found by Cheapflights users on 7/28. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/171:24 pmPDX - DEN
1 stop6h 03mHawaiian Airlines
Sat 9/2011:40 amDEN - PDX
Nonstop2h 43mHawaiian Airlines
Deal found 7/28$167

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 July 28, 2025.
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

Thu 9/18

6:05 am-9:44 am

Nonstop2h 39m

Denver Intl

Sun 9/28

10:29 pm-12:12 am

Nonstop2h 43m

$105

PortlandDenver

PDX - DEN

PDXDEN

Portland

Sat 9/20

6:50 am-10:20 am

Nonstop2h 30m

Denver Intl

Sat 9/27

7:55 pm-9:30 pm

Nonstop2h 35m

$157

PortlandDenver

PDX - DEN

PDXDEN

Portland

Tue 9/9

1:24 pm-8:27 pm

1 stop6h 03m

Denver Intl

Tue 9/16

8:00 am-12:27 pm

1 stop5h 27m

$163

PortlandDenver

PDX - DEN

PDXDEN

Portland

Wed 9/17

1:24 pm-8:27 pm

1 stop6h 03m

Denver Intl

Sat 9/20

11:40 am-1:23 pm

Nonstop2h 43m

$167

PortlandDenver

PDX - DEN

PDXDEN

Portland

Tue 8/26

3:18 pm-9:44 pm

1 stop5h 26m

Denver Intl

Sat 8/30

7:59 pm-11:52 pm

1 stop4h 53m

$177

PortlandDenver

PDX - DEN

PDXDEN

Portland

Wed 10/29

7:00 am-10:35 am

Nonstop2h 35m

$79

PortlandDenver

PDX - DEN

PDXDEN

Portland

Tue 12/9

10:40 am-7:19 pm

1 stop7h 39m

$82

PortlandDenver

PDX - DEN

PDXDEN

Portland

Sun 8/24

6:27 am-10:06 am

Nonstop2h 39m

$84

PortlandDenver

PDX - DEN

PDXDEN

Portland

Wed 12/17

9:15 am-6:09 pm

1 stop7h 54m

$87

PortlandDenver

PDX - DEN

PDXDEN

Portland

Wed 8/20

3:18 pm-9:44 pm

1 stop5h 26m

$89

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 12 results
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The best insider tips for Portland to Denver flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
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

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 July 25, 2025.

The best time to book flights from Portland to Denver is 30 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, October is the cheapest month in which you can book a flight from Portland to Denver (average of $197). Flying from Portland to Denver in March is currently the most expensive (average of $278). 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 July 28, 2025.

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 37% 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 July 27, 2025.

Travelers seeking maximum savings on their Portland to Denver flight should consider departing on Thursday 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.

Weekly flight availability from Portland to Denver

Explore weekly flight availability from Portland to Denver. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 28, 2025.

The most flights from PDX to DEN are scheduled on a Monday (22 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (10 on average).

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 July 28, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta 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
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,237 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,971 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,604 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,893 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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 30m for a nonstop flight. There are 17 flights from Portland to Denver per day from 5 airlines.

  • How popular is this Portland to Denver flight route?

    This flight path from Portland to Denver Intl was viewed by 229 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Cheapflights users have booked flights from Portland to Denver round-trip from $107. Other airlines that can offer you cheap pricing are Southwest, from $157, and Hawaiian Airlines, from $163. Users have found that Frontier is 44% 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 $78. However, be on the lookout for offers from Alaska Airlines and Hawaiian 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 Lufthansa (87%), United Airlines (82%) and SWISS (82%).

  • What are the cheapest flights from Portland to Denver?

    While on average a flight from Portland to Denver is generally $791, our data shows the cheapest flight currently is $74. When looking at the most popular route, (Portland - Denver Intl), you can expect to pay $115 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, October is the cheapest month in which you can book a flight from Portland to Denver (average of $197). Flying from Portland to Denver in March is currently the most expensive (average of $278). 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
Westminster
Black Hawk
Winter Park
Lakewood
Cripple Creek
Brighton
Silverthorne
Golden
Thornton
Greeley
Frisco
Grand Lake
Manitou Springs
Central City
Fort Morgan
Glendale
Copper Mountain
Wheat Ridge
Longmont
Broomfield

Browse thousands of different options on Cheapflights for your next trip

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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 July 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$56Average$135FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$94Average$237FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$157Average$304FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$157Average$245FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$163Average$262FlexibilityNo cancel feeOn-time75%
DeltaCheapest$196Average$275FlexibilityNo cancel feeOn-timeN/A

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