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$73+ 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 10/24. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — DEN
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
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 September 15, 2025.

Round-trip from

$91
(Cheapflightsfares)

One-way from

$73
(Frontier)

Popular in

March

Cheapest in

October

Average price

$177

Good round-trip deal

$197 or less

Good one-way deal

$134 or less
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. 3% potential increase in price ($7 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 September 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 September 15, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/47:15 amPDX - DEN
Nonstop2h 43mFrontier
Tue 10/79:58 amDEN - PDX
Nonstop2h 50mFrontier
Deal found 9/15$91
This eDestinos deal was found by Cheapflights users on 9/14. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1312:52 pmPDX - DEN
Nonstop2h 43mFrontier
Sun 11/169:48 amDEN - PDX
1 stop5h 43mFrontier
Deal found 9/14$96
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2112:43 pmPDX - DEN
Nonstop2h 43mFrontier
Fri 10/3110:05 amDEN - PDX
Nonstop2h 51mFrontier
Deal found 9/15$97
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1612:43 pmPDX - DEN
Nonstop2h 43mFrontier
Wed 10/229:58 amDEN - PDX
Nonstop2h 50mFrontier
Deal found 9/14$101
This Priceline deal was found by Cheapflights users on 9/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1812:43 pmPDX - DEN
Nonstop2h 43mFrontier
Mon 10/209:58 amDEN - PDX
Nonstop2h 50mFrontier
Deal found 9/14$102
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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.
Fri 10/1012:44 pmPDX - DEN
Nonstop2h 43mFrontier
Tue 10/149:58 amDEN - PDX
Nonstop2h 50mFrontier
Deal found 9/13$105
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1710:34 amPDX - DEN
1 stop12h 10mFrontier
Sat 10/189:58 amDEN - PDX
Nonstop2h 50mFrontier
Deal found 9/14$106
This Frontier deal was found by Cheapflights users on 9/15. 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.
Sat 10/1812:43 pmPDX - DEN
Nonstop2h 43mFrontier
Mon 10/279:58 amDEN - PDX
Nonstop2h 50mFrontier
Deal found 9/15$107
This Frontier deal was found by Cheapflights users on 9/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/209:52 pmPDX - DEN
1 stop10h 40mFrontier
Mon 10/279:58 amDEN - PDX
Nonstop2h 50mFrontier
Deal found 9/14$108
This Frontier deal was found by Cheapflights users on 9/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1812:43 pmPDX - DEN
Nonstop2h 43mFrontier
Fri 10/249:58 amDEN - PDX
Nonstop2h 50mFrontier
Deal found 9/14$110
This American Airlines deal was found by Cheapflights users on 9/13. 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.
Sat 11/157:40 amPDX - COS
1 stop7h 07mAmerican Airlines
Thu 11/204:37 pmCOS - PDX
1 stop7h 22mAmerican Airlines
Deal found 9/13$207
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/304:02 pmPDX - COS
1 stop4h 57mUnited Airlines
Mon 11/36:00 amCOS - PDX
1 stop4h 38mUnited Airlines
Deal found 9/14$217

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 September 15, 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

Tue 10/14

5:25 pm-11:14 pm

1 stop4h 49m

Denver Intl

Wed 10/29

6:25 am-10:30 am

1 stop5h 05m

$153

PortlandDenver

PDX - DEN

PDXDEN

Portland

Wed 10/15

3:19 pm-11:14 pm

1 stop6h 55m

Denver Intl

Sat 10/25

5:30 am-9:03 am

1 stop4h 33m

$153

PortlandDenver

PDX - DEN

PDXDEN

Portland

Tue 10/14

2:32 pm-6:02 pm

Nonstop2h 30m

Denver Intl

Wed 10/29

11:31 am-1:24 pm

Nonstop2h 53m

$155

PortlandDenver

PDX - DEN

PDXDEN

Portland

Tue 10/14

5:15 pm-12:29 am

1 stop6h 14m

Denver Intl

Tue 10/21

7:25 pm-9:06 pm

Nonstop2h 41m

$177

PortlandDenver

PDX - DEN

PDXDEN

Portland

Wed 10/15

5:25 pm-11:14 pm

1 stop4h 49m

Denver Intl

Tue 10/21

6:25 am-10:30 am

1 stop5h 05m

$177

PortlandDenver

PDX - DEN

PDXDEN

Portland

Sat 10/18

5:25 pm-11:14 pm

1 stop4h 49m

Denver Intl

Wed 10/22

5:30 am-9:03 am

1 stop4h 33m

$177

PortlandDenver

PDX - DEN

PDXDEN

Portland

Sat 11/15

2:23 pm-11:22 pm

1 stop7h 59m

Denver Intl

Tue 11/18

6:05 am-1:18 pm

1 stop8h 13m

$177

PortlandDenver

PDX - DEN

PDXDEN

Portland

Tue 10/14

5:25 pm-11:14 pm

1 stop4h 49m

Denver Intl

Wed 10/22

6:25 am-10:30 am

1 stop5h 05m

$182

PortlandDenver

PDX - DEN

PDXDEN

Portland

Tue 10/14

5:25 pm-11:14 pm

1 stop4h 49m

Denver Intl

Sat 10/25

5:30 am-9:03 am

1 stop4h 33m

$182

PortlandDenver

PDX - DEN

PDXDEN

Portland

Fri 1/23

5:45 pm-11:22 pm

1 stop4h 37m

Denver Intl

Sun 1/25

6:15 am-10:34 am

1 stop5h 19m

$185

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

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, October is the cheapest month in which you can book a flight from Portland to Colorado (average of $197). Flying from Portland to Colorado 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 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 September 15, 2025.

When flying from Portland to Colorado, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 September 15, 2025.

The most flights from PDX to USCO 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 (8 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 September 15, 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
10,000 reviews

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Southwest
8.0
Very good
4,242 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Hawaiian Airlines
7.8
Good
2,723 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,929 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Frontier
5.8
Fair
3,172 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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 216 times in the past calendar month.

  • How long is the flight from Portland to Colorado?

    For as low as $155, Delta can have you in Colorado from Portland in 2h 30m. 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 $79. United Airlines flights start at $79 while deals on Delta start at $109 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 - Colorado Springs or Portland - Durango La Plata County.

  • 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: United Airlines (82%), Lufthansa (80%), SWISS (73%).

  • What are the cheapest flights from Portland to Colorado?

    On average you can expect to pay $834 for a flight from Portland to Colorado. The cheapest flight overall is $89 while the most popular route, (Portland - Denver Intl) is currently priced at $106.

  • 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, October is the cheapest month in which you can book a flight from Portland to Colorado (average of $197). Flying from Portland to Colorado 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.

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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$143FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$98Average$234FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$157Average$359FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$159Average$473FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$162Average$263FlexibilityNo cancel feeOn-time75%
DeltaCheapest$198Average$317FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$228Average$385FlexibilityNo cancel feeOn-time71%

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