PDX - DEN

$76 Find Cheap Flights from Portland to Denver

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Denver departing on 6/27. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Denver

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Denver.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Denver.
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Everything you should know

Cheapest round-trip
$85
Overall average: $197
Frontier
Thu 4/16Fri 4/17
PDX - DEN • Non-stop
Cheapest one-way
$76
Typical prices: $106-$203
Frontier
Sat 6/27
PDX - DEN • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Frontier's Economy Bundle includes a carry-on and seat.
Southwest offers two free checked bags for extra luggage.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $85 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with Alaska Airlines, Frontier and others. Average duration is 2h 31m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Avoid delays
Most punctual • 92% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 20% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 19% price drop
Most popular
Good to know
Good to know
+1
+1
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+1
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Flight Deals
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Flight Deals

Cheap Flights from Portland to Denver (PDX-DEN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Denver that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Denver

Thu, Apr 16 - Fri, Apr 17
Frontier Logo
11:48 am - 3:26 pm
PDX
-
DEN
2h 38mnonstop
Frontier Logo
9:10 am - 11:03 am
DEN
-
PDX
2h 53mnonstop
$85Frontier
Fri, Apr 10 - Tue, Apr 14
Frontier Logo
11:58 am - 3:36 pm
PDX
-
DEN
2h 38mnonstop
Frontier Logo
11:10 am - 1:02 pm
DEN
-
PDX
2h 52mnonstop
$87Frontier
Fri, Apr 10 - Tue, Apr 14
Frontier Logo
11:58 am - 3:36 pm
PDX
-
DEN
2h 38mnonstop
Frontier Logo
11:10 am - 1:02 pm
DEN
-
PDX
2h 52mnonstop
$88Frontier
Fri, Apr 17 - Sun, Apr 19
Frontier Logo
11:48 am - 3:26 pm
PDX
-
DEN
2h 38mnonstop
Frontier Logo
8:24 am - 10:20 am
DEN
-
PDX
2h 56mnonstop
$91Frontier
Thu, Aug 13 - Sun, Aug 16
Frontier Logo
3:12 pm - 6:56 pm
PDX
-
DEN
2h 44mnonstop
Frontier Logo
9:25 am - 11:13 am
DEN
-
PDX
2h 48mnonstop
$97Frontier
Mon, Aug 17 - Tue, Aug 25
Frontier Logo
3:12 pm - 6:56 pm
PDX
-
DEN
2h 44mnonstop
Frontier Logo
9:25 am - 11:13 am
DEN
-
PDX
2h 48mnonstop
$98Frontier
Wed, Apr 22 - Sun, Apr 26
Frontier Logo
12:38 pm - 4:18 pm
PDX
-
DEN
2h 40mnonstop
Frontier Logo
8:24 am - 10:20 am
DEN
-
PDX
2h 56mnonstop
$99Frontier
Tue, Apr 14 - Mon, Apr 20
Frontier Logo
1:48 pm - 5:29 pm
PDX
-
DEN
2h 41mnonstop
Frontier Logo
9:10 am - 11:03 am
DEN
-
PDX
2h 53mnonstop
$102Frontier
Sat, Apr 25 - Sat, May 2
Frontier Logo
12:27 pm - 4:07 pm
PDX
-
DEN
2h 40mnonstop
Frontier Logo
9:49 am - 11:42 am
DEN
-
PDX
2h 53mnonstop
$103Frontier
Mon, Aug 17 - Tue, Aug 25
Frontier Logo
3:12 pm - 6:56 pm
PDX
-
DEN
2h 44mnonstop
Frontier Logo
9:25 am - 11:13 am
DEN
-
PDX
2h 48mnonstop
$106Frontier
Booking Insights

KAYAK's insights & trends for Portland to Denver flights

Get data-powered insights and trends into flights from Portland to Denver to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Portland to Denver?

The average price of all round-trip flights from Portland to Denver clicked on KAYAK for each day over the last 12 months.

For Portland to Denver, Friday is the cheapest day to fly on average and Monday is the most expensive. Flying from Denver back to Portland, the best deals are generally found on Wednesday, with Sunday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Denver, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to Denver is August, where tickets cost $173 (return) on average. On the other hand, the most expensive months are March and December, where the average cost of round-trip tickets is $267 and $247 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Portland to Denver, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Portland to Denver, you should book around 2 weeks before departure, which saves you about 20% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Expert advice

Expert advice for your flight from Portland to Denver

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Frontier and United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Blane Bachelor

Blane Bachelor

Expert on Southwest

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Gabriel Leigh

Gabriel Leigh

Expert on PDX

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Harriet Baskas

Harriet Baskas

Expert on DEN

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.

Good to know

Low seasonFebruary
Cheapest flight$76
Best time to beat the crowds but there is an average 10% increase in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from Portland to Denver

When to book flights from Portland to Denver

Are your dates flexible? Find out the best times to travel from Portland to Denver based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Portland to Denver

  • Are there nonstop flights from Portland, Oregon to Denver, Colorado?

    You can get non-stop flights from Portland to Denver. Among the most popular airlines that fly this route include Southwest Airlines, Frontier Airlines, and United Airlines. All these offer daily non-stop flights and have the fastest way to travel from Portland to Denver.

  • What’s the best way to travel to Portland International Airport (PDX)?

    The light rail offers an affordable way to get to the airport from Downtown Portland. You can also use a taxi or request an Uber. Also, Portland is a bicycle-loving city, so you can ride your bicycle to the airport.

  • Are there lounges for passengers at the Denver International Airport (DEN)?

    You can book some time in a lounge at the airport. Most airlines offer a day pass that will allow you to relax in one of their lounges.

  • Can I find restaurants at the Denver International Airport (DEN)?

    There are several restaurants you can visit at the Denver International Airport. You’ll find these restaurants on Concourse A, B, and C. There are all types of culinary options, from steakhouses to gluten-free menus. For a quick bite, there are McDonald's and Burger King in Concourse A and the Jeppesen Terminal, respectively.

  • Which airport facilities are available at Denver International Airport (DEN)?

    Denver International Airport offers different services to ease your travel. These include nursing rooms, a smoking den, water bottle filling stations, free WiFi, religious facilities at Jeppesen Terminal, and pet relief areas.

  • Are there hotels located inside the Denver International Airport (DEN)?

    The closest hotels are within 10 miles of the airport. Most nearby hotels offer shuttle service, so you can book a room if you need a place to stay when you arrive in Denver.

  • What are the public transportation options from Denver Airport?

    You can take the A Line commuter train which operates from DEN to Denver Union Station in downtown. The train runs every 30 minutres or 15 minutes during peak hours. Also, you can use the public bus service from DEN to the metro area. The buses leave every 15 minutes and bus attendants can help unload your baggage at the airport.

  • What family services are available at Portland Airport (PDX)?

    There are several services at PDX to help traveling families enjoy their airport experience. You can use the family restrooms near Gates D1, A2, and C3. Also, there are changing stations located in all PDX restrooms. The kid's play area is located near gate D7 in Concourse D. For nursing mothers, find a nursing room between gates 5-6 on the concourse Level.

  • What lounges are available at Denver International Airport?

    There is United Club near Gate B30 which offers various amenities, including comfortable seating, complimentary food & beverages, and Wi-Fi. There is also the Delta Sky Club in Pedestrian Bridge Y Junction. The American Airlines Admirals Club is located near the A Gates Bridge which serves American Airlines passengers.

  • Where is the rental car center at Denver International Airport?

    DEN features more than 10 popular car rental brands right at the airport. To access the car rental center, board a courtesy shuttle from Jeppesen Terminal and follow the signs to your preferred rental car company. A representative will guide you to your rental.

  • Where can I spend some time relaxing before flying out of Portland?

    You can enjoy some comfort and quiet time while waiting for your flight at Portland International Airport (PDX). Book a tech-equipped Escape Pod located in the terminals to escape the terminal's noise from the hurried activity. Some of the services to enjoy here are Wi-Fi access and comfortable seating.

  • Where are the pet-relief stations at Portland Airport (PDX)?

    If you're traveling with your furry friend, you will be glad to know that PDX offers several pet relief areas inside and outside the terminals. The post-security relief areas are found on Concourse C and those outside the terminals are found after the baggage claim level next to MAX Light Rail. Your pet needs to be leashed inside and outside the pet relief area. Your airline will specify any policies associated with traveling with a pet to Denver.

  • What is the cheapest flight from Portland to Denver?

    In the last 3 days, the lowest price for a flight from Portland to Denver was $77 for a one-way ticket and $85 for a round-trip.

  • Do I need a passport to fly between Portland and Denver?

    No, a passport isn't needed to fly from Portland to Denver. However, local authorities might ask for an official ID.

  • Which airlines offer Wi-Fi service onboard planes from Portland to Denver?

    All the following airlines offer inflight Wi-Fi service on the Portland to Denver flight route: Alaska Airlines, Delta, JetBlue, American Airlines, Aeromexico, and Hawaiian Airlines.

  • Which aircraft models fly most regularly from Portland to Denver?

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the Portland to Denver flight route.

  • Which airline alliances offer flights from Portland to Denver?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Portland and Denver, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Portland to Denver?

    There are nonstop flights from Portland to Denver on a daily basis.

  • Which is the best airline for flights from Portland to Denver, Alaska Airlines or Southwest?

    The two airlines most popular with KAYAK users for flights from Portland to Denver are Alaska Airlines and Southwest. With an average price for the route of $252 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Southwest is also a great choice for the route, with an average price of $261 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Portland to Denver?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Denver.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Denver?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Portland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Denver?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Denver with an airline and back to Portland with another airline. Booking your flights between Portland and DEN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Denver?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Denver from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Portland to Denver

  • Looking for a cheap flight? 25% of our users found flights on this route for $148 or less one-way and $268 or less round-trip.
  • Portland offers several airports you can use to travel to other cities in the US or abroad. The Portland International Airport (PDX) is the main airport, open 24/7.
  • It’s easy to access the Portland International Airport. You can drive your car and leave it at their convenient parking facilities, or you can use executive cars, train service, shuttles, or taxis that serve the airport.
  • If you’re waiting for the flight and looking for some ideas at the Portland International Airport, you can catch a movie at the nonprofit Hollywood Theater, which plays short films by local filmmakers.
  • For arrivals in Denver, you can use the Denver International Airport (DEN). The airport is a suitable option if you’re traveling to metropolitan Denver or the greater Front Range Urban Corridor.
  • From the Denver International Airport, you can travel to Downtown Denver using the RTD Rail A-Line or the bus system. Also, you can rent a car or find a taxi.
  • Many hotels around Denver offer shuttle service to and from Denver International Airport, and there are over 10 rental car companies to help you get around.
  • If you’re tense when you arrive at the Denver International Airport, you can get massage treatment at Concourses A and B and the Xpress Spa in Concourse C.
  • The Denver International Airport offers the Interfaith Chapel and the Islamic Prayer Hall, which allow you quiet time for prayers.
  • If you like exploring multiple destinations in one trip, a journey from Portland to Denver is perfect for you. Several airlines feature up to three layovers before reaching Denver. Fly Sun Country Air, Spirit Airlines, United Airlines, or Alaska Airlines and enjoy a layover at  Las Vegas Harry Reid Intl (LAS) or Minneapolis St. Paul (MSP).
  • Most airlines on this route have embarked on eco-friendly travel. No wonder, the emissions of carbon dioxide only falls under 2204 lb on average per person. To further bring the emissions down, we recommend flying Frontier, United Airlines, or Alaska Airlines which can help reduce the emissions by over 40%.
  • Getting to PDX is seamless with the MAX light-rail train. The train at the Portland Airport is located a few miles from the city. The train trip from downtown to Portland Airport takes around 40 minutes. The trains run through downtown about every 15 minutes daily.

Prefer to fly direct from Portland to Denver?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Portland to Denver Intl.
Find which airlines fly direct from Portland Airport to Denver Intl Airport, which days they fly and book direct flights.

Direct departures

Portland to Denver Intl

Monday

Alaska Airlines,Frontier,Southwest, +1 more

Alaska Airlines,Frontier, +2 more

Tuesday

Alaska Airlines,Frontier,Southwest, +1 more

Alaska Airlines,Frontier, +2 more

Wednesday

Alaska Airlines,Frontier,Southwest, +1 more

Alaska Airlines,Frontier, +2 more

Thursday

Alaska Airlines,Frontier,Southwest, +1 more

Alaska Airlines,Frontier, +2 more

Friday

Alaska Airlines,Frontier,Southwest, +1 more

Alaska Airlines,Frontier, +2 more

Saturday

Alaska Airlines,Frontier,Southwest, +1 more

Alaska Airlines,Frontier, +2 more

Sunday

Alaska Airlines,Frontier,Southwest, +1 more

Alaska Airlines,Frontier, +2 more

See more direct flights

Direct returns

Denver Intl to Portland

Monday

Alaska Airlines,Frontier,Southwest, +1 more

Alaska Airlines,Frontier, +2 more

Tuesday

Alaska Airlines,Frontier,Southwest, +1 more

Alaska Airlines,Frontier, +2 more

Wednesday

Alaska Airlines,Frontier,Southwest, +1 more

Alaska Airlines,Frontier, +2 more

Thursday

Alaska Airlines,Frontier,Southwest, +1 more

Alaska Airlines,Frontier, +2 more

Friday

Alaska Airlines,Frontier,Southwest, +1 more

Alaska Airlines,Frontier, +2 more

Saturday

Alaska Airlines,Frontier,Southwest, +1 more

Alaska Airlines,Frontier, +2 more

Sunday

Alaska Airlines,Frontier,Southwest, +1 more

Alaska Airlines,Frontier, +2 more

See more direct flights

Reviews of the top 5 airlines serving from Portland to Denver

 
See real verified KAYAK customer reviews for airlines flying from Portland to Denver. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Portland to Denver? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 12042 reviews
8.1Boarding
8.5Crew
7.0Entertainment
7.8Comfort
7.1Food
Airline reviews

Wonderful as always! Pleasant staff, smooth ride, and timely departure.

10.0 ExcellentAnonymous, Mar 2026
PDX - BOI
Read more Alaska Airlines reviews

Wonderful as always! Pleasant staff, smooth ride, and timely departure.

Everything ran like it should. Staff was professional. Looking forward to flying with them again.

Liked the attention and speed when getting wheelchair..........Was assured by phone that my needs would be taken care of and they were with my name.

Crew very courteous. Boarding was great. Slow to get baggage at Denver.

The seats were spacious and comfortable. Even in basic economy. However, the flight boarded 30 minutes late.

Alaska used to be a top notch airline. With it's growth it is now in line with the big airlines. Not bad, not great.

Great. I did have a little issue getting into the Lounge, which is likely more an American Airlines issue. I did not carry my physical AAdvantage Executive credit card with me on this trip, which Admirals Club membership is a part of the benefits of having this card. The instructions on the AA website and the Citi cards website make it seem like you don't need the physical card, as both sites state you can enter with your boarding pass and driver's license. But both lounges said you were required to present the physical card (and not the digital version, via Apple Pay), as only the physical card says "Admirals Club" on the back.I also do not have a physical Admirals Club membership card, so while both lounges eventually let me in, both denied me entrance initially for this reason.

Everything from the time I booked my flight through to the end when I got home was smooth and wonderful. Service was great, the flight attendants were attentive and there were no outstanding delays.

Delayed and no entertainment? I also forgot my headphones and immediately reported it and have not heard back yet.

The crew was very friendly. Boarding was quick and efficient.

Long layover between flights to Long Island from BWI - need better coordination between flights

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

I realize they are still working out kinks with the new boarding process, but by the time I boarded in group 5, most of the bins were full. All airlines should better enforce small bags and jackets going under the seats until everyone has boarded.

WiFi was not working and didn’t have a beverage service

Snacks are always pretzels. Why can't you also offer peanuts ?

Flight boarded late after announcing on time boarding. Flight arrived only a little late despite late departure. Had trouble connecting to WiFi

The crew were exceptionally nice and accommodating. My wife was tired after the flight from Haneda, Tokyo. They let her sleep and served her dinner later after she woke up, before we landed in PDX.

No charging outlets worked. Other than collecting trash attendants didn’t come around. No one could hear flight attendants announcements during the flight. Seat pads were horrible. Sitting on a board for 5 hours. What happened to Hawaiian airlines comfort, hospitality, and extras? Our pilots did an excellent job trying to minimize turbulence and incredible job in landing in windy conditions.

I like that if they asked you to checked in a bag at the gate they give you priority to board

Horrible food and crew. Crew were laughing and talking loud while people were trying to sleep

Yall need to integrate your system with Alaska more efficiently. They booted me off the first flight because of a discrepancy on your end.

The crew at Hawaiian Airlines was fantastic. Kind and hard working. The pilots were great with giving us all the updates to make sure we were informed.

Very good. Nice plane and we sat in economy plus - bigger seats, more room. They served a meal and snacks, and the meal was an apple stuffed pancake that was very good! The snack for us was a hummus sandwich - also very good. The flight attendants were helpful and nice. They have plenty of movies and shows to watch. My only negative -- they changed our flights around and did not adjust the layovers, so we ended up with a very long and unnecessary layover in Honolulu.

I liked the Starlink WiFi but didn't like how they said they were the only airline to offer a free meal and it turns out to be just a standalone sandwich and then charge for snacks to go with it. Rather have the free snacks like Southwest, but have the option to purchase a decent meal for a 5+ hour flight.

Flight scheduled to take off at 5.55pm but it did not take off until 7pm due to some food delivery delay.

Unfortunately, I was put into the middle seat in the first row of premium seating. Sounds nice right? No! that is the worst seat in the plane. I wish I was in economy rather than be in that seat! There is no seat back pocket, no tray table, no charger. Nothing! so unless you're row mates are willing to let you share their basic amenities any flyer should have, you are stuck. It was the worst experience ever! And the flight attendant forgot to take my drink order. I felt like the forgotten flyer.

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

It’s always a great time flying with united airlines.

We got delayed three hours and nobody thought to have the bathroom fixed while we were sitting waiting to board? took a full hour to have maintenance come and check it off. Had to shut the bathroom down twice so that the pilots could go to the bathroom. Everyone missed their connections.

Women boarding passengers at the gate was absolutely rude and disrespectful of passengers. The flight attendant was absolutely delightful! Smiling and connected with the passengers. So happy. The seats are cramped and uncomfortable but I guess that’s just the way it is Communication regarding flight was excellent

As great a red-eye flight as red-eye flights can be.

Both of my flights arrived early and check in process was smooth

Everything was on time Will use united again for sure

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

Hotter than Hades in August. Why, why do crews think that in the winter when we are already dressed for cold weather we need a cabin that is 82 degrees. Even the vents were blowing hot air.

Flight was delayed. De-icing took a while. When we landed had to wait for another plane to vacate our gate. Just an overall bad experience.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

The experience was good. No frills but I got there safe and sound and on time.

As every law enforcement agency I could imagine surrounded the plane and we didn’t disembark for 2 hours and then had to stick around for another hour to go get our personal belongings after leaving them behind and being bused away from the plane, it was scary and inconvenient. We were given no information as to why this was happening. Lack of communication with passengers was disappointing.

Frontier Airlines was AWFUL. I was an hour early for my flight and the lady refused to check me in. I had to purchase a whole new ticket with a different airline.

Late, terrible communication, horrible planning of passenger seating until the literal last minute. One of the worst flying experiences of my life. Y'all suck

First of all, we never got on the connecting flight to Denver. They delayed our flight for two hours. If we would have gotten on that flight, we would have been stuck in Denver for 13 hours. So we re- routed our flight for a straight through flight to Oklahoma two days later. THEN, they delayed that flight for two hours. After that we were able to finally get on our flight and come home. Frontier Airlines - one of the worst airlines I have ever been on.

Terrible communication with weather delay, lost baggage, near impossible to reach customer service

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

Other airlines flying from Portland to Denver

Flights from the other most popular airlines that fly from Portland to Denver according to KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.