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Find cheap flights from Portland to Colorado from $39

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 Colorado departing on 7/9. 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
0 bags
Tue 7/9
Tue 7/16

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Best Colorado Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Denver
Denvernonstop$88
Aspen
Aspen1 stop$296
Grand Junction
Grand Junction1 stop$269
Durango
Durango1 stop$339
Montrose
Montrose1 stop$399
Hayden
Hayden1 stop$644

Good to know

Low season

January

High season

August

Cheapest flight

$39
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly and prices are also 12% lower on average.
Flight from Portland to Denver

FAQs - booking Colorado flights

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

    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 Colorado.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Colorado 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 Colorado?

    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 Colorado with an airline and back to Portland with another airline.

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

    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 Colorado from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Colorado

  • Looking for a cheap flight? 25% of our users found tickets from Portland to the following destinations at these prices or less: Denver $123 one-way - $200 round-trip
  • Morning departure is around 26% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Portland to Colorado

Need help choosing which airline to fly with from Portland to Colorado? 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
DeltaOverall score based on 10310 reviews
8.0Entertainment
8.2Boarding
7.9Comfort
8.6Crew
7.4Food
Airline reviews

3 hours late and all they have is was a $12 meal voucher. That’s not even enough to cover fast food.

2.0 MediocreCraig, Jun 2024CVG - LGA
Read more about Delta reviews

3 hours late and all they have is was a $12 meal voucher. That’s not even enough to cover fast food.

Among the poorest flights I’ve had with Delta in a while. Entertainment system failed completely on a 7.5 hr flight. Crew seemed distracted and not the normal friendly crew. Flight overbooked it seemed… very crowded.

If I can, I always fly Delta. I’ve found their service to always be reliable and pleasant.

You could have not cancelled the flight (AA, which I will be flying from now on) left for BOS despite the fictitious weather issues (that no one in my Boston family could see). You could have rebooked my direct flight to another direct flight instead of sending me though JFK, the worst US airport after O’Hara You could have rebooked me on a Main Cabin seat (like the one I paid for in my original ticket instead of putting me a the last row on JFK->BOS leg, pocketing the difference in ticket price But I do not really care whether you will ever do that in a future because in a future neither I nor anyone from my company (unless they pay out of pocket) nor an of my clients and partners (if they heed my advice) will ever be caught dead on any of Delta flights

Really bad baggage handling. Had my Rimowa bag badly damaged at the latches.

It was pretty good I was worried with the short Layover that I might not catch my connection but the gate was there

It was good until there was a 3 hour delay because there was not any pilots to fly the plane.

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

Friendly flight attendants. Comfort plus seats were very comfortable and had lots of leg room. 10A and 10 B.

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

They put me on a chair in between two men, one overweight who was almost falling on top of me, and the other was even uncomfortable because I was half falling because of what the other was pushing me. I stayed with. my feet were swollen from fluid retention and from being unable to accommodate myself. it was very uncomfortable. I asked for help but they told me that the flight was full and they couldn't help me. I got off the plane almost unable to walk due to the inflammation. and then at FLL airport I asked for help because I couldn't go to my next flight, which was a connection.

The walk from baggage claim to the taxi is very difficult for older people I will never fly into JFK again. It is physically challenging

Overall fine but both ways for this trip was delayed.

Flight was delayed by almost 5 hours. Suitcase was not loaded despite the flight being near empty (my colleagues’ suitcases did reach JFK, unlike mine). Had to argue on phone to get JetBlue to deliver the case to my hotel. Never again

The flight was excellent. The crew was welcoming and attentive.

Great! I love Jet Blue. My favorite airline! Very efficient, clean and timely.

Run out of snack choices. Why are the seats not padded for your butt? Are we sitting on blocks of wood or metal for $250-300 a pop? This ain’t spirit. Let’s get it together people

We were told that our flight would be delayed for 90+ minutes because of weather, so we went to get something to eat only to have them randomly start boarding 15 minutes after the announcement, with no warning.

Entertainment... No earphones passed out. Many including me couldn't use the TV. Legroom was good. Crew was indifferent and a bit surly. Free wifi was a nice convenience. Check in desk location was unknown. Gate number on the boarding passes was wrong.

Going through JFK’s security is a mess. The TSA security said no shoes on the bins. So, we place our shoes in the belt and they came out all over the belt. Boarding was delayed and Flight as well.

Horrible, the flights kept delaying, so it is obvious that we won't be able to make it to the next connection. No easier/real agent on site to help you figure this out. UA agent on other counters refuse to assist you and direct us to use the QR code/call customer service. So inefficient and poor. While technology seems convenient, but it's not the best interest/experience for customers need help while there is active issue need assistance.

Not worth the price of premium class ticket paid, felt more like steerage.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

The Wi-Fi was unavailable on this flight for some reason.

This was a Lufthansa flight, not United. The CSA at the counter, Ashley, was not only incompetent, but quite rude. Me and two other PAX waited over 7 minutes standing in front of her and another CSA and they ignored us. We joked that we must have accidently taken invisibility pills. She could have at least said "I'll be with you in a moment, I'm currently....". I could go on about how rude she and the other CSAs were (whispering, not communicating with me, blaming the situation on others, etc.). She would not work for me. Then, she gave me literally the worst seat on the plane. the worst. My seat kept getting bumped (rammed twice by the crew with their carts and about every 5 minutes by someone using the bathroom), listening to the bathroom all night, crowded seat, etc.

We ended up with seats in the very back. So they did not recline. Have no idea why, we reserved and checked in very early. The isles were very narrow and the seats had very little leg room. But they did give us water, and a snack.

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

The plane was dirty and the in seat air wasn't blowing as planes usually do.

This was a Lufthansa flight. Disappointing main meal. Very rough over Canada and arrival at FRA. IFE was almost unusable.

Positive: Entertainment via phone on the short was great and my first time. Good food and wine and head phones for free. Negative: Seat hardly reclined on the long flight. Breakfast was an egg with a bun. No egg choices and rather have something sweet like bun/jam and Youghurt.

This is by far the worst experience I have had with American Airlines. The start of this trip was a complete disaster. I purposely planned my trip so that I would weather any delays so that I could make very important meeting at the Pentagon. My flight was cancelled because of maintenance and I was put on the first flight the next day but I was late to the meeting. After a long week at the Pentagon I just wanted to go home and my flight home which was early in the day was delayed. Eventually the flight was delayed until the next day. I was not authorized a hotel room because DCA was my point of origin. So I paid for a hotel out of pocket. The flight this morning was boarded then deplaned because the aircraft was hot. The flow of information was not happening in DCA and made it worse when the news was bad. I am going to take a break from American for my next few military flights. Hopefully whatever has been going on with American Airlines will be resolved.

We had a 2 hour delay. The seats were smaller than most other airlines. The person in front of us wanted to lay back and we had to stop her because she was pressing against my girlfriend’s legs. We had to ask her to sit up and not lay back due to the lack of room.

Everything was fine once we actually got on our flight. It was more then annoying they canceled (delayed) our flight. We lost out on a day of our trip along with money on our stay. Plus we had to book another hotel. So expensive.

This flight was canceled and delayed several times without explanation. The plane was freezing cold and no wifi for messaging. Getting off the plane was terribly unorganized and felt like it took forever….

The flight was delayed several times without explanation. The seats were terribly uncomfortable and wifi isn’t included. All these make for a less than ideal flight.

The flights was delayed by hours and it was the firmest landing I have experienced in my life. My back is still sore.

Internet service was erratic. Crew service was poor and slow. My luggage on this non-stop flight was lost and not recovered

Terrible. I didn’t fly and I had an important meeting the next day.

Equipment swap led to 2+ hour delay on international flight. And to top it off, boarding took forever.

Wretched scheduling - they got themselves into a critical crew situation and didn’t try to address it until 15 minutes before they had to cancel my flight

My experience was pretty frustrating because the first leg of my flight on United (though booked through Air Canada) was delayed causing me to miss my connecting flight on Air Canada. This could have been an easy solve as there was a direct flight later that morning via Air Canada that they easily could have put me on which would have only gotten me to my destination 2 1/2 hours later but because United and Air Canada don’t seem to have good communication they gave me the run around both telling me to talk with the other which I did three times to no avail. I ended up taking the delayed flight and getting on a new connecting flight which ended up getting me to my destination 6 hours later and I missed the event I was planning to go to this evening.

I was appalled to have to pay for just a regular seat when I went to book 24 hrs before my flight! Because it was only an hour flight I didn’t choose a seat from Grand Junction to Denver, but I did for Toronto and had to pay just to choose a regular available seat! In my 60+ years of flying this was the first time I have heard of this. Also, allowing people to bring on “huge “ suitcases, not carry on size, but much bigger, and then a large pack pack stuffed. So they take up all the room in the overhead bins and if we are later boarding, there is no room so we have to check our small carry on. I have already paid for and checked in one bag! I certainly will not choose to fly with United again unless it is the “only” airline available!

It was an excellent experience, traveling from Toronto to Denver with United.

Fresh fuit or veg snacks would be so great, but there are two good restaurants in Denver airport. Try Etais UDIS or Freshens DIA for nutritious delicious pita sandwiches/ donairs and crepes in Freshens.

Crowded plane but it flew on time and had friendly staff

The Air Canada agent was very helpful helping with my luggage and cat carrier when I went there instead of United.

United force you to download their App to do the check-in.

Economy seats were surprisingly comfortable, and snacks not too bad. Checked luggage arrived at destination without problems. It was annoying to wait until last to board as lowest-tier seats but understand it’s difficult to gauge when loading a full plane At least checked carryon luggage seemed to come off first. Annoying to have to use app to order food/drink when wifi availability didn’t allow time for it. Advance communication would have helped Food on menu seemed highly processed and unpalatable, overpriced and over packaged. So maybe a good thing to have missed chance to order

It was fine. The seating was tight. My husband is 6' 2", so we were glad to get seats with no one in front of him. I was glad that the plane wasn't packed so I could spread out.

There is no food or entertainment on these short flights. Again the wheelchair situation in Denver is nasty. They are short staffed due to cut backs and layoffs and this impacts on travel comfort and ease.

Book cheap flights from Portland to Colorado

Recent round-trip flight deals

7/17Wed
nonstopFrontier
2h 31mPDX-DEN
7/24Wed
nonstopFrontier
2h 43mDEN-PDX
$88
7/5Fri
nonstopFrontier
2h 31mPDX-DEN
7/13Sat
nonstopFrontier
2h 43mDEN-PDX
$91
7/16Tue
1 stopDelta
4h 35mPDX-DEN
7/20Sat
1 stopDelta
4h 57mDEN-PDX
$211
8/22Thu
1 stopUnited Airlines
4h 09mPDX-COS
8/25Sun
1 stopUnited Airlines
4h 22mCOS-PDX
$214
8/26Mon
nonstopUnited Airlines
2h 34mPDX-DEN
8/31Sat
nonstopUnited Airlines
2h 42mDEN-PDX
$217
6/20Thu
nonstopAlaska Airlines
2h 45mPDX-DEN
6/25Tue
nonstopAlaska Airlines
2h 40mDEN-PDX
$224
6/29Sat
1 stopDelta
5h 02mPDX-DEN
7/2Tue
1 stopDelta
4h 34mDEN-PDX
$231
6/20Thu
nonstopAlaska Airlines
2h 45mPDX-DEN
6/23Sun
nonstopAlaska Airlines
2h 42mDEN-PDX
$244
7/17Wed
1 stopAmerican Airlines
4h 49mPDX-DRO
7/24Wed
1 stopAmerican Airlines
5h 02mDRO-PDX
$339
8/14Wed
1 stopAmerican Airlines
9h 19mPDX-COS
8/20Tue
2 stopsAmerican Airlines
11h 03mCOS-PDX
$347

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Recent one-way flight deals

7/9Tue
nonstopFrontier
2h 31mPDX-DEN
$39
9/4Wed
nonstopFrontier
2h 36mPDX-DEN
$44
8/13Tue
nonstopUnited Airlines
2h 39mPDX-DEN
$69
6/29Sat
1 stopDelta
5h 02mPDX-DEN
$88
7/9Tue
nonstopUnited Airlines
2h 39mPDX-DEN
$89
6/27Thu
1 stopAlaska Airlines
6h 13mPDX-DEN
$95
9/6Fri
1 stopDelta
4h 48mPDX-DEN
$98
7/9Tue
nonstopAlaska Airlines
2h 45mPDX-DEN
$104
7/5Fri
1 stopAmerican Airlines
6h 11mPDX-DEN
$123
8/30Fri
1 stopAmerican Airlines
13h 49mPDX-DEN
$188

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Last minute flights from Portland to Colorado

Last minute flight, train and bus deals

6/12Wed
nonstopFrontier
2h 33mPDX-DEN
6/16Sun
nonstopFrontier
2h 45mDEN-PDX
$175
6/13Thu
nonstopFrontier
2h 33mPDX-DEN
6/22Sat
nonstopFrontier
2h 44mDEN-PDX
$179
6/10Mon
multi-stopAmerican Airlines
8h 53mPDX-COS
6/12Wed
multi-stopAmerican Airlines
8h 44mCOS-PDX
$262
6/10Mon
multi-stopAmerican Airlines
9h 28mPDX-COS
6/12Wed
multi-stopAmerican Airlines
7h 14mCOS-PDX
$267
6/12Wed
multi-stopUnited Airlines
5h 39mPDX-COS
6/15Sat
multi-stopUnited Airlines
5h 33mCOS-PDX
$334
6/12Wed
multi-stopUnited Airlines
5h 39mPDX-COS
6/15Sat
multi-stopUnited Airlines
11h 55mCOS-PDX
$385
6/12Wed
nonstopAlaska Airlines
2h 38mPDX-DEN
6/16Sun
nonstopAlaska Airlines
2h 42mDEN-PDX
$402
6/13Thu
multi-stopDelta
9h 20mPDX-COS
6/22Sat
multi-stopDelta
5h 09mCOS-PDX
$728
6/13Thu
multi-stopDelta
9h 20mPDX-COS
6/22Sat
multi-stopDelta
8h 49mCOS-PDX
$733
6/10Mon
multi-stopAlaska Airlines
7h 55mPDX-GJT
6/16Sun
multi-stopAlaska Airlines
9h 11mGJT-PDX
$784

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