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$28+ Cheap flights from Colorado to Oregon

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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — PDX
Feb 5 — Feb 121
Thu 2/5
Thu 2/12
1 adult, Economy
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Cheap flight deals from Colorado to Oregon

Keep the following information in mind while searching for Colorado to Oregon flight deals. Data was last updated January 6, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$66
(Frontier)

One-way from

$28
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$157

Good round-trip deal

$178 or less

Good one-way deal

$161 or less
Provider with most accurate pricing for Denver Intl-Portland flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Portland flights.
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From Colorado to Oregon
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One-way flight from Colorado to Oregon
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Highest demand for flights based on searches. 5% potential increase in price ($11 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Price to beat on a round-trip flight from Colorado to Oregon.
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Price to beat on a one-way flight from Colorado to Oregon.
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Find flight deals from Colorado to Oregon

Cheapest flights from Colorado to Oregon
Explore the most affordable flight options available from Colorado to Oregon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 6, 2026.

This Frontier deal was found by Cheapflights users on 1/6. 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.
Fri 2/209:01 amDEN - BOI
Nonstop2h 10mFrontier
Sun 3/111:56 amBOI - DEN
Nonstop2h 00mFrontier
Deal found 1/6$66
This Frontier deal was found by Cheapflights users on 1/5. 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.
Fri 1/239:10 amDEN - BOI
Nonstop2h 02mFrontier
Mon 1/2612:07 pmBOI - DEN
Nonstop2h 00mFrontier
Deal found 1/5$93
This Frontier deal was found by Cheapflights users on 1/4. 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.
Sun 1/1811:14 amDEN - BOI
Nonstop2h 02mFrontier
Mon 1/2612:07 pmBOI - DEN
Nonstop2h 00mFrontier
Deal found 1/4$98
This Frontier deal was found by Cheapflights users on 1/4. 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 1/1911:23 amDEN - BOI
Nonstop2h 02mFrontier
Mon 1/2612:07 pmBOI - DEN
Nonstop2h 00mFrontier
Deal found 1/4$108
This Travelocity deal was found by Cheapflights users on 1/5. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/57:00 amDEN - BOI
1 stop5h 51mMultiple Airlines
Thu 2/1212:36 pmBOI - DEN
Nonstop2h 00mMultiple Airlines
Deal found 1/5$111
This Expedia deal was found by Cheapflights users on 1/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/209:01 amDEN - BOI
Nonstop2h 10mMultiple Airlines
Mon 2/236:00 pmBOI - DEN
1 stop5h 59mMultiple Airlines
Deal found 1/6$115
This Frontier deal was found by Cheapflights users on 1/4. 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.
Sun 1/1811:14 amDEN - BOI
Nonstop2h 02mFrontier
Fri 1/2312:07 pmBOI - DEN
Nonstop2h 00mFrontier
Deal found 1/4$118
This Kiwi.com deal was found by Cheapflights users on 1/6. 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.
Thu 2/199:41 amDEN - BOI
Nonstop2h 10mMultiple Airlines
Thu 2/266:00 pmBOI - DEN
1 stop5h 59mMultiple Airlines
Deal found 1/6$122
This Orbitz deal was found by Cheapflights users on 1/6. 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.
Fri 3/139:10 amDEN - PDX
Nonstop2h 59mMultiple Airlines
Mon 3/163:52 pmPDX - DEN
1 stop7h 07mMultiple Airlines
Deal found 1/6$123
This Kiwi.com deal was found by Cheapflights users on 1/6. 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.
Fri 3/139:10 amDEN - PDX
Nonstop2h 59mMultiple Airlines
Tue 3/177:05 amPDX - DEN
Nonstop2h 37mMultiple Airlines
Deal found 1/6$124
This Kiwi.com deal was found by Cheapflights users on 1/6. 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.
Tue 2/247:00 amDEN - BOI
1 stop8h 08mMultiple Airlines
Thu 2/2612:38 pmBOI - DEN
Nonstop2h 00mMultiple Airlines
Deal found 1/6$125
This Kiwi.com deal was found by Cheapflights users on 1/6. 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.
Wed 2/257:00 amDEN - BOI
1 stop7h 58mMultiple Airlines
Fri 2/2711:56 amBOI - DEN
Nonstop2h 00mMultiple Airlines
Deal found 1/6$126

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado to Oregon 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 January 6, 2026.
Use the filters below to find and compare flights from Colorado to Oregon that are best for you.

Fly from

Colorado

Fly to

Oregon

Route

Depart

Return

Price

DenverPortland

DEN - PDX

DENPDX

Denver Intl

Tue 1/27

7:45 am-9:45 am

Nonstop3h 00m

Portland

Tue 1/27

3:45 pm-7:18 pm

Nonstop2h 33m

$137

DenverPortland

DEN - PDX

DENPDX

Denver Intl

Sat 2/21

11:38 am-1:38 pm

Nonstop3h 00m

Portland

Sat 2/28

7:05 am-10:42 am

Nonstop2h 37m

$137

DenverPortland

DEN - PDX

DENPDX

Denver Intl

Wed 2/4

8:40 am-10:35 am

Nonstop2h 55m

Portland

Wed 2/11

2:15 pm-5:40 pm

Nonstop2h 25m

$137

DenverPortland

DEN - PDX

DENPDX

Denver Intl

Sat 3/7

8:00 am-9:54 am

Nonstop2h 54m

Portland

Tue 3/10

8:30 am-12:03 pm

Nonstop2h 33m

$137

DenverPortland

DEN - PDX

DENPDX

Denver Intl

Sat 2/28

11:38 am-1:38 pm

Nonstop3h 00m

Portland

Wed 3/4

7:05 am-10:42 am

Nonstop2h 37m

$137

DenverPortland

DEN - PDX

DENPDX

Denver Intl

Sun 2/8

11:49 am-1:44 pm

Nonstop2h 55m

Portland

Tue 2/10

7:21 am-10:53 am

Nonstop2h 32m

$147

DenverPortland

DEN - PDX

DENPDX

Denver Intl

Wed 5/13

6:41 pm-8:28 pm

Nonstop2h 47m

Portland

Sun 5/17

2:33 pm-6:19 pm

Nonstop2h 46m

$147

DenverPortland

DEN - PDX

DENPDX

Denver Intl

Wed 2/18

11:38 am-1:38 pm

Nonstop3h 00m

Portland

Mon 2/23

7:05 am-10:42 am

Nonstop2h 37m

$147

DenverPortland

DEN - PDX

DENPDX

Denver Intl

Tue 2/3

11:49 am-1:44 pm

Nonstop2h 55m

Portland

Tue 2/10

2:38 pm-11:35 pm

1 stop7h 57m

$147

Colorado SpringsPortland

COS - PDX

COSPDX

Colorado Springs

Wed 2/4

7:59 am-12:32 pm

1 stop5h 33m

Portland

Wed 2/11

5:50 am-11:18 am

1 stop4h 28m

$157

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

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

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

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

Currently, January is the cheapest month in which you can book a flight from Colorado to Oregon (average of $52). Flying from Colorado to Oregon in August is currently the most expensive (average of $99). 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 CO to OR?

Find hourly flight availability from Colorado to Oregon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 6, 2026.

One of the essential ways to save on airfare from Colorado to Oregon is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 21% on airfare.

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

Use this chart to determine the cheapest time to fly round-trip from Colorado to Oregon. Price data was last updated on January 3, 2026.

Travelers seeking maximum savings on their Colorado to Oregon flight should consider departing on Tuesday evenings when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Colorado to Oregon

Explore weekly flight availability from Colorado to Oregon. 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 January 6, 2026.

The most flights from USCO to USOR are scheduled on a Tuesday (17 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).

Reviews of airlines servicing Oregon

Get insights into the airlines that provide service to Oregon. 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 Oregon. Reviews last updated January 6, 2026.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Hawaiian Airlines from Colorado to Oregon by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,656 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Food

7.1

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
8.0
Very good
11,656 reviews
Alaska Airlines
8.0
Very good
11,656 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Food

7.1

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Southwest
8.0
Very good
4,249 reviews
Alaska Airlines
8.0
Very good
11,656 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Food

7.1

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Hawaiian Airlines
7.8
Good
2,824 reviews
Alaska Airlines
8.0
Very good
11,656 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Food

7.1

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
United Airlines
7.4
Good
9,138 reviews
Alaska Airlines
8.0
Very good
11,656 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Food

7.1

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Frontier
5.7
Fair
3,063 reviews
Alaska Airlines
8.0
Very good
11,656 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Food

7.1

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Related info for your journey

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

  • How popular is this Colorado to Oregon flight route?

    Flights from Colorado to Oregon have been viewed 72 times in the past calendar month.

  • How long is the flight from Colorado to Oregon?

    There are many flights that can get you from Colorado to Oregon in 2h 55m. Fly via United Airlines, Alaska Airlines, or Southwest to get the fastest option. There are 989 mi between Colorado and Oregon. Generally, flights for this route are nonstop.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Colorado to Oregon (average of $52). Flying from Colorado to Oregon in August is currently the most expensive (average of $99). 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.

See more FAQs

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Alternative routes for Colorado to Oregon

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

Discover the top 7 airlines that operate flights from Colorado to Oregon. 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 January 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$66Average$158FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$88Average$281FlexibilityNo cancel feeOn-time85%
DeltaCheapest$104Average$284FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$136Average$429FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$147Average$297FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$157Average$355FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$210Average$376FlexibilityNo cancel feeOn-time71%

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