Frontier's Premium seats provide up to seven inches more legroom than Standard seats.
Avoid Basic Fare to select your seat and ensure carry-on space.
Planning a trip from Denver to Portland? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.
When planning a flight from Denver to Portland, there are several strategies that could potentially save you money. Generally, the cheapest day of the week to fly is Saturday, and the cheapest month to fly is February.
Day Selection: Opt to fly on Saturdays for the lowest fares.
Month Selection: Consider flying in February to save on airfare.
Booking Advance: Book your flight at least 15 days in advance to get the best deal.
Airline Choice: Frontier Airlines generally offers the cheapest flights for this route.
Flight Type: Direct flights are typically more expensive, so consider flights with layovers to save money.
This feature is powered by ChatGPT: an OpenAI-developed artificial intelligence model trained with KAYAK proprietary data and third-party data not verified by KAYAK.
Low season | February |
---|---|
High season | June |
Cheapest flight | $61 |
Find which airlines fly direct from Denver Intl Airport to Portland Airport, which days they fly and book direct flights.
Direct departures
Denver Intl to Portland
Monday
Alaska Airlines, Copa Airlines, Frontier, +5 more
Alaska Airlines, Copa Airlines, +6 more
4
5
Tuesday
Alaska Airlines, Condor, Frontier, +4 more
Alaska Airlines, Condor, +5 more
3
4
Wednesday
Alaska Airlines, Copa Airlines, Frontier, +5 more
Alaska Airlines, Copa Airlines, +6 more
4
5
Thursday
Alaska Airlines, Copa Airlines, Frontier, +4 more
Alaska Airlines, Copa Airlines, +5 more
3
4
Friday
Alaska Airlines, Condor, Copa Airlines, +6 more
Alaska Airlines, Condor, +7 more
5
6
Saturday
Alaska Airlines, Copa Airlines, Frontier, +4 more
Alaska Airlines, Copa Airlines, +5 more
3
4
Sunday
Alaska Airlines, Condor, Frontier, +6 more
Alaska Airlines, Condor, +7 more
5
6
Direct returns
Portland to Denver Intl
Monday
Alaska Airlines, Copa Airlines, Frontier, +5 more
Alaska Airlines, Copa Airlines, +6 more
4
5
Tuesday
Alaska Airlines, Frontier, Hawaiian Airlines, +3 more
Alaska Airlines, Frontier, +4 more
2
3
Wednesday
Alaska Airlines, Copa Airlines, Frontier, +5 more
Alaska Airlines, Copa Airlines, +6 more
4
5
Thursday
Alaska Airlines, Copa Airlines, Frontier, +4 more
Alaska Airlines, Copa Airlines, +5 more
3
4
Friday
Alaska Airlines, Copa Airlines, Frontier, +5 more
Alaska Airlines, Copa Airlines, +6 more
4
5
Saturday
Alaska Airlines, Copa Airlines, Frontier, +4 more
Alaska Airlines, Copa Airlines, +5 more
3
4
Sunday
Alaska Airlines, Frontier, Hawaiian Airlines, +5 more
Alaska Airlines, Frontier, +6 more
4
5
I got the last seat on the plane, in the back in the corner against the window, and I paid a competitive price for my ticket several weeks before the flight.
I got the last seat on the plane, in the back in the corner against the window, and I paid a competitive price for my ticket several weeks before the flight.
Everything was good. However, the selections of movies and TV shows were boring and unexciting. It was disappointing.
Personal demeanor not good on flight returning to LAX..Great and superb on the way to Portland
Very helpful with my mother who needed a wheelchair at both ends and everything went as expected
The flight was great, the crew was great. Our complaint was that there are no TV screens built into the seats. We used our tablets but drained my battery just watching a movie. The movie and TV selection were okay but not great.
The Crew was super nice but the plane was subpar at best. Filthy in some aspects. Internet only worked half the time and not with everything.
They were all very kind, but misinformed. We came from Idaho to Spokane, Washington and were told that my husband and I could get passes to sit with William until his flight took off. (William has special needs.) When we got to the airport we were told only one of us could sit with William, so my husband and I were separated for 2 hours as I sat with William. What is WORSE . . . is I asked for a meet and assist in Portland and they NEVER showed up. NOR did they call me to tell me they hadn't met him. William's grandmother in Portland is disabled and can't walk into find him. Fortunately, some kind citizens helped him to find the meeting point with me on the phone in terror. I have a heart condition, complete with prior heart attack, this type of customer service is UNACCEPTABLE.
Crew was overly aggressive with rules enforcement and not friendly in general.
Loved the crew and everything went without a hitch! We took our dog for the first time and I was a little nervous but the crew was fantastic!
It was fine. Very friendly crew. Smooth flight. Landing was a little rough though.
It is southwest seat was ok. Not the most comfortable seat
I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight
The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.
Plz don't take away free bags and free seating
The seats were a bit cramped and worn, but otherwise okay.
I would have liked to arrive on time - not 5 hours late!
After a 3 hour layover in Denver my flight was delayed over 5 hours! No explanation; no assistance; no offer to provide compensation; no one at Southwest was willing to offer any assistance. 8 hours in the Denver airport - ridiculous!
It was a perfect flight in all aspects! Both legs!
Only one drink pass through the cabin for a 4 hour flight. Quite rough and bumpy landing.
Boarding process, crew were good. But the seats were so uncomfortable that was all I could focus on. I literally had to sit forward so that all 3 of us could fit in row. I will try to avoid Southwest in the future for any flights over 60 minutes.
The departure gate was changed from C1 to B18 but it was never announced at the C1 gate nor did I receive any email or text message or phone call about the gate change. I was in a window seat. In the other two seats next to me were Mr. Rotund and Ms. Rotunda, a youngish couple. Just the two of them should have booked three seats. I was smashed up against the wall and window for five hours. Overall, I'd say my flight sucked. Wouldn't you?
I couldn't get checked in 24 hours before either leg of my flight. I tried both my Alaska and Hawaiian codes on both apps.
We moved from the international terminal to a new location. I think there are still some bugs to work out . We didn’t receive check in notification and had to scramble to find it but i think it will work out
I'm was impressed with their service. Everything was great
All in All a great experience. Cost of luggage sucks … first time I ever had to pay for luggage. Otherwise the check in counter was awesome, the gate clerks were great and the Stewards & Esses were the best.
As my daughter was boarding the flight they pulled her from the line and told her, after she had checked in and checked a bag, that she could not board the flight due to a fraud flag on the debit card used for the ticket purchase. The personnel would not allow me to speak to them, saying I had to take it up with customer service that was not present. They tried to get my daughter to purchase another ticket on the spot or get out. The customer service personnel were insistant that the personnel at the gate be on the phone which they would not allow. Would not accept payment from three different accounts and did not resolve the issue. Many conflicting reports about the source of the problem, the fraud department is uncontactable. The only good thing to come of it was checked bag arrived. Our family will not be using Hawaiian Airlines. Ever.
Great staffing. Terrible food. Please do cold sandwiches or salads. the "hot pickets" are terrible.
Love Hawaiian you can’t go wrong, still provides you good drinks and little snack at the end
No tv’s. Had to walk 45 minutes to connect to next flight. Couldn’t get dinner as a result. Ended up eating pretzels until I felt sick.
Not so good. The takeoff was aborted after reaching 100 knots due to a problem with the front tires. I do commend the pilot for a quick decision and preventing a potential disaster. We returned to the gate to put fresh tires on the front. Our flight was delayed for over 3 hours. The rest of the flight was okay. We were reimbursed by Hawaiian Airlines for only $50. Not too generous
Electric plugs didn't work. Entertainment system wasn't working
The design of the light switch on the arm rest is ridiculous.
The gate attendant let me walk right by her with a bag too big for the overhead compartment
Overall, it was a good experience. Boarding was good and there was plenty of overhead bin space for everyone’s carryons (even when we boarded toward the end). Only improvement would be to offer trash service more regularly.
David went above and beyond to make our flight the best that it could be
No food service almost missed because of first flight delays
Had a hard time finding my assigned seat. No attendants to assist.
The negative was the wait at the airport coming back. I checked my bags in, an hour before boarding and I get the notification that my flight was delayed. Rather had gotten the notification while I was at the hotel. Then it was delayed 3 x’s. Ugh!
Plane still had screens for watching movies. Good selection too.
There was no air on the plane and it was very hot.
The seats were awful, hard plastic covered in sheet vinyl. The airline tries to scam you into paying extra to get seat together when the flight wasn’t full. They were going to separate a family with young children but my wife who had a row to herself gave up her seat so the young mom could be with her young boys. I’m never giving this airline my money again.
The worst flight of my life. Never will I fly frontier again
Flight was delayed 3 times, would have been nice to have received text message instead of email notifications. Frontier app wasn’t even updated accordingly, no gate number disclosed. No agent at front desk of gate to inform of delay. Very confused and left if the dark
Everything went as planned. Crew was great. Seats were still not that comfortable.
they delayed my flight which ended up, causing my layover flight to leave without me, resulting in me missing a flight and having to stay overnight in Houston international. I got no compensation other than a flight to my original location only a day later. i’ve never experienced such a unprofessional situation
The seats were extremely hard and uncomfortable, even for a budget airline.
Boarding was very well executed. Got my bag right away.
Overall experience good. There was no food and seats were not terribly comfortable.
I ended up paying $70+ dollars to for a carryon because the website is confusing and misleading. I now realize I did not need to pay that. I request a refund. I will pay extra to other airlines and not fly Frontier again.
Although we received an email from Kayak AND the airline, turns out we were not on Frontier’s manifest for the flight. We had to purchase tickets at the gate. Not sure where this transaction fell apart, but it did. We are now disputing the charges for the SLC to PDX flight originally booked through Kayak.
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