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$66+ Cheap flights from Portland (PDX) to Colorado

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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — DEN
nov. 15 — nov. 221
sáb. 11/15
sáb. 11/22
1 adult, Economy
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Cheap flight deals from Portland to Colorado

Keep the following information in mind while searching for Portland to Colorado flight deals. Data was last updated octubre 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$95
(Kiwi.com)

One-way from

$66
(Netflights)

Popular in

March

Cheapest in

August

Average price

$209

Good round-trip deal

$229 or less

Good one-way deal

$122 or less
Provider with most accurate pricing for Portland-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Portland-Denver Intl flights.
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From Portland to Colorado
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One-way flight from Portland to Colorado
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Highest demand for flights based on searches. 0% potential increase in price ($2 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Portland to Colorado.
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Price to beat on a one-way flight from Portland to Colorado.
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Find flight deals from Portland to Colorado

Cheapest flights from Portland to Colorado
Explore the most affordable flight options available from Portland to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 16, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/15. 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.
vie. 11/143:26 pmPDX - DEN
Nonstop2h 41mFrontier
lun. 11/1710:05 amDEN - PDX
Nonstop2h 51mFrontier
Deal found 10/15$95
This Kiwi.com deal was found by Cheapflights users on 10/15. 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.
vie. 11/76:35 pmPDX - DEN
1 stop26h 14mFrontier
lun. 11/1010:05 amDEN - PDX
Nonstop2h 51mFrontier
Deal found 10/15$96
This Frontier deal was found by Cheapflights users on 10/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/73:26 pmPDX - DEN
Nonstop2h 41mFrontier
sáb. 11/1510:05 amDEN - PDX
Nonstop2h 51mFrontier
Deal found 10/15$97
This Kiwi.com deal was found by Cheapflights users on 10/15. 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.
jue. 11/1312:52 pmPDX - DEN
Nonstop2h 43mFrontier
dom. 11/1610:29 pmDEN - PDX
1 stop21h 02mFrontier
Deal found 10/15$99
This Frontier deal was found by Cheapflights users on 10/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/3110:02 pmPDX - DEN
1 stop12h 19mFrontier
dom. 11/210:05 amDEN - PDX
Nonstop2h 51mFrontier
Deal found 10/16$102
This Orbitz deal was found by Cheapflights users on 10/16. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/263:59 pmPDX - DEN
Nonstop2h 33mMultiple Airlines
mié. 12/311:41 amDEN - PDX
Nonstop3h 00mMultiple Airlines
Deal found 10/16$103
This Kiwi.com deal was found by Cheapflights users on 10/14. 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.
mar. 11/41:26 pmPDX - DEN
Nonstop2h 47mFrontier
jue. 11/610:00 amDEN - PDX
1 stop26h 08mFrontier
Deal found 10/14$105
This Kiwi.com deal was found by Cheapflights users on 10/15. 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.
lun. 11/173:26 pmPDX - DEN
Nonstop2h 41mMultiple Airlines
mié. 11/1911:31 amDEN - PDX
Nonstop2h 53mMultiple Airlines
Deal found 10/15$108
This Kiwi.com deal was found by Cheapflights users on 10/16. 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.
mar. 11/111:26 pmPDX - DEN
Nonstop2h 47mMultiple Airlines
mié. 11/1211:31 amDEN - PDX
Nonstop2h 53mMultiple Airlines
Deal found 10/16$109
This Priceline deal was found by Cheapflights users on 10/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/73:26 pmPDX - DEN
Nonstop2h 41mFrontier
dom. 11/99:48 amDEN - PDX
1 stop5h 43mFrontier
Deal found 10/15$110
This American Airlines deal was found by Cheapflights users on 10/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/105:30 amPDX - COS
1 stop9h 15mAmerican Airlines
mar. 12/1612:45 pmCOS - PDX
1 stop7h 25mAmerican Airlines
Deal found 10/15$159
This Delta deal was found by Cheapflights users on 10/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/512:40 pmPDX - COS
2 stops8h 30mDelta
mié. 11/126:02 pmCOS - PDX
1 stop6h 56mDelta
Deal found 10/15$162

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Colorado 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 octubre 16, 2025.
Use the filters below to find and compare flights from Portland to Colorado that are best for you.

Fly from

Portland

Fly to

Colorado

Route

Depart

Return

Price

PortlandDenver

PDX - DEN

PDXDEN

Portland

jue. 11/13

12:52 pm-4:35 pm

Nonstop2h 43m

Denver Intl

dom. 11/16

9:48 am-2:31 pm

1 stop5h 43m

$110

PortlandDenver

PDX - DEN

PDXDEN

Portland

sáb. 11/8

4:02 pm-7:35 pm

Nonstop2h 33m

Denver Intl

mar. 11/11

7:46 am-9:38 am

Nonstop2h 52m

$137

PortlandDenver

PDX - DEN

PDXDEN

Portland

jue. 11/6

7:10 pm-10:43 pm

Nonstop2h 33m

Denver Intl

mar. 11/11

6:00 am-10:53 am

1 stop5h 53m

$153

PortlandDenver

PDX - DEN

PDXDEN

Portland

sáb. 11/15

5:30 pm-11:57 pm

1 stop5h 27m

Denver Intl

mar. 11/18

7:00 am-12:38 pm

1 stop6h 38m

$156

PortlandDenver

PDX - DEN

PDXDEN

Portland

sáb. 11/8

5:30 pm-11:57 pm

1 stop5h 27m

Denver Intl

sáb. 11/15

7:00 am-1:50 pm

1 stop7h 50m

$156

PortlandDenver

PDX - DEN

PDXDEN

Portland

mar. 3/10

5:45 pm-11:22 pm

1 stop4h 37m

Denver Intl

mié. 3/11

6:15 am-10:34 am

1 stop5h 19m

$157

PortlandDenver

PDX - DEN

PDXDEN

Portland

vie. 1/30

6:20 am-9:45 am

Nonstop2h 25m

Denver Intl

lun. 2/2

8:40 am-10:35 am

Nonstop2h 55m

$157

PortlandDenver

PDX - DEN

PDXDEN

Portland

sáb. 11/8

5:25 pm-11:14 pm

1 stop4h 49m

Denver Intl

mar. 11/11

6:05 am-10:55 am

1 stop5h 50m

$157

PortlandDenver

PDX - DEN

PDXDEN

Portland

lun. 12/8

1:34 pm-11:59 pm

1 stop9h 25m

Denver Intl

mié. 12/31

7:20 am-9:18 am

Nonstop2h 58m

$157

PortlandDenver

PDX - DEN

PDXDEN

Portland

jue. 1/8

7:21 am-10:53 am

Nonstop2h 32m

Denver Intl

sáb. 1/10

5:09 pm-10:46 pm

1 stop6h 37m

$157

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/16

Showing 1-10 of 60 results
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Best time to book a flight from Portland to Colorado

Have a flexible travel schedule? Discover the best time to fly to Colorado 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 Colorado

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

Currently, February is the cheapest month in which you can book a flight from Portland to Colorado (average of $39). Flying from Portland to Colorado 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 CO?

Find hourly flight availability from Portland to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 16, 2025.

One of the essential ways to save on airfare from Portland to Colorado is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 13% on airfare.

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

Use this chart to determine the cheapest time to fly round-trip from Portland to Colorado. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Portland to Colorado flight should consider departing on Saturday at noon 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 Colorado

Explore weekly flight availability from Portland to Colorado. 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 octubre 16, 2025.

The most flights from PDX to USCO are scheduled on a Thursday (19 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. 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 Colorado. Reviews last updated octubre 16, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Hawaiian Airlines from Portland to Colorado by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,103 reviews

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
11,103 reviews
Alaska Airlines
8.0
Very good
11,103 reviews

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Southwest
8.0
Very good
4,241 reviews
Alaska Airlines
8.0
Very good
11,103 reviews

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Hawaiian Airlines
7.8
Good
2,781 reviews
Alaska Airlines
8.0
Very good
11,103 reviews

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
United Airlines
7.4
Good
8,982 reviews
Alaska Airlines
8.0
Very good
11,103 reviews

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Frontier
5.8
Fair
3,137 reviews
Alaska Airlines
8.0
Very good
11,103 reviews

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

Related info for your journey

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

  • What airport do you fly from for flights from Portland to Colorado?

    If you book a flight to Colorado from Portland, you will be flying from Portland, which is the city’s only airport. Portland (PDX) is located 6.0 mi from the center of Portland.

  • How popular is this Portland to Colorado flight route?

    Flights from Portland to Colorado have been viewed 215 times in the past calendar month.

  • How long is the flight from Portland to Colorado?

    For as low as $137, Frontier can have you in Colorado from Portland in 2h 33m. The distance between Portland and Colorado is about 989 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    To fly one-way, consider booking your trip with Alaska Airlines, which is currently one of the cheapest options available, starting at $69. United Airlines flights start at $69 while deals on Delta start at $89 one-way.

  • What are the most popular routes from Portland to Colorado?

    The most popular route from Portland to Colorado is Portland - Denver Intl. You may also consider Portland - Durango La Plata County or Portland - Colorado Springs.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Portland to Colorado on time: SWISS (87%), United Airlines (86%), Lufthansa (85%).

  • What are the cheapest flights from Portland to Colorado?

    On average you can expect to pay $754 for a flight from Portland to Colorado. The cheapest flight overall is $79 while the most popular route, (Portland - Denver Intl) is currently priced at $107.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portland to Colorado 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 Colorado?

    Currently, February is the cheapest month in which you can book a flight from Portland to Colorado (average of $39). Flying from Portland to Colorado 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.

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Alternative routes for Portland to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Portland to Colorado

Discover the top 7 airlines that operate flights from Portland to Colorado. 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 octubre 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$59Average$147FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$98Average$234FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$157Average$359FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$160Average$445FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$170Average$266FlexibilityNo cancel feeOn-time75%
DeltaCheapest$196Average$306FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$228Average$390FlexibilityNo cancel feeOn-time71%

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