HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portland

$129+ Cheap flights from Colorado to Portland, ME (PWM)

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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — PWM
ago. 5 — ago. 121
mar. 8/5
mar. 8/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Colorado to Portland with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Colorado to Portland

Keep the following information in mind while searching for Colorado to Portland flight deals. Data was last updated julio 31, 2025.

Round-trip from

$265
(FlightHub)

One-way from

$129
(Frontier)

Popular in

February

Cheapest in

November

Average price

$508

Good round-trip deal

$447 or less

Good one-way deal

$332 or less
From Colorado to Portland
Search Deals
One-way flight from Colorado to Portland
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($33 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals
Price to beat on a round-trip flight from Colorado to Portland.
Search Deals
Price to beat on a one-way flight from Colorado to Portland.
Search Deals

Find flight deals from Colorado to Portland

Cheapest flights from Colorado to Portland
Explore the most affordable flight options available from Colorado to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 31, 2025.

This FlightHub deal was found by Cheapflights users on 7/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/812:23 amDEN - PWM
1 stop15h 50mFrontier
sáb. 8/166:58 pmPWM - DEN
1 stop15h 04mFrontier
Deal found 7/29$265
This United Airlines deal was found by Cheapflights users on 7/29. 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.
mar. 8/2610:01 amDEN - PWM
Nonstop3h 55mUnited Airlines
sáb. 8/305:02 pmPWM - DEN
1 stop6h 57mUnited Airlines
Deal found 7/29$279
This American Airlines deal was found by Cheapflights users on 7/31. 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.
mar. 9/166:02 amCOS - PWM
2 stops12h 09mAmerican Airlines
mié. 9/249:18 amPWM - COS
1 stop9h 00mAmerican Airlines
Deal found 7/31$282
This JetBlue deal was found by Cheapflights users on 7/31. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/511:25 amDEN - PWM
1 stop8h 37mJetBlue
vie. 9/122:17 pmPWM - DEN
1 stop22h 23mJetBlue
Deal found 7/31$284
This American Airlines deal was found by Cheapflights users on 7/30. 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.
sáb. 9/207:00 amDEN - PWM
1 stop8h 55mAmerican Airlines
sáb. 10/45:10 pmPWM - DEN
1 stop6h 57mAmerican Airlines
Deal found 7/30$289
This Delta deal was found by Cheapflights users on 7/30. 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.
lun. 9/81:10 pmCOS - PWM
1 stop8h 53mDelta
dom. 9/146:00 amPWM - COS
1 stop8h 06mDelta
Deal found 7/30$307
This Cheapflightsfares deal was found by Cheapflights users on 7/30. 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.
jue. 8/146:13 pmDEN - PWM
1 stop15h 32mSun Country Air
jue. 8/2111:42 amPWM - DEN
1 stop8h 13mSun Country Air
Deal found 7/30$309
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/2511:40 pmDEN - PWM
1 stop8h 10mSouthwest
mié. 8/279:05 amPWM - DEN
2 stops9h 00mSouthwest
Deal found 7/29$312
This United Airlines deal was found by Cheapflights users on 7/29. 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.
lun. 8/185:30 amCOS - PWM
1 stop8h 19mUnited Airlines
vie. 8/226:14 amPWM - COS
1 stop6h 42mUnited Airlines
Deal found 7/29$332
This CheapOair deal was found by Cheapflights users on 7/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/88:30 pmDEN - PWM
1 stop13h 05mMultiple Airlines
sáb. 8/166:58 pmPWM - DEN
1 stop15h 04mMultiple Airlines
Deal found 7/29$334
This Delta deal was found by Cheapflights users on 7/31. 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.
vie. 8/152:00 pmDEN - PWM
1 stop8h 03mDelta
sáb. 8/236:31 amPWM - DEN
1 stop13h 37mDelta
Deal found 7/31$336
This American Airlines deal was found by Cheapflights users on 7/30. 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.
vie. 9/55:15 amGJT - PWM
2 stops10h 24mAmerican Airlines
sáb. 9/138:40 amPWM - GJT
2 stops14h 29mAmerican Airlines
Deal found 7/30$409

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado to Portland 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 julio 31, 2025.
Use the filters below to find and compare flights from Colorado to Portland that are best for you.

Fly from

Colorado

Fly to

Portland

Route

Depart

Return

Price

DenverPortland

DEN - PWM

DENPWM

Denver Intl

vie. 8/15

12:23 am-6:13 pm

1 stop15h 50m

Portland

sáb. 8/23

1:41 pm-11:11 pm

1 stop11h 30m

$268

DenverPortland

DEN - PWM

DENPWM

Denver Intl

mar. 8/26

10:01 am-3:56 pm

Nonstop3h 55m

Portland

sáb. 8/30

5:02 pm-9:59 pm

1 stop6h 57m

$279

Colorado SpringsPortland

COS - PWM

COSPWM

Colorado Springs

mar. 9/16

6:02 am-8:11 pm

2 stops12h 09m

Portland

mié. 9/24

9:18 am-4:18 pm

1 stop9h 00m

$282

DenverPortland

DEN - PWM

DENPWM

Denver Intl

vie. 9/5

11:25 am-10:02 pm

1 stop8h 37m

Portland

vie. 9/12

2:17 pm-10:40 am

1 stop22h 23m

$284

DenverPortland

DEN - PWM

DENPWM

Denver Intl

sáb. 9/20

7:00 am-5:55 pm

1 stop8h 55m

Portland

sáb. 10/4

5:10 pm-10:07 pm

1 stop6h 57m

$289

Colorado SpringsPortland

COS - PWM

COSPWM

Colorado Springs

lun. 9/8

1:10 pm-12:03 am

1 stop8h 53m

Portland

dom. 9/14

6:00 am-12:06 pm

1 stop8h 06m

$307

DenverPortland

DEN - PWM

DENPWM

Denver Intl

jue. 8/14

6:13 pm-11:45 am

1 stop15h 32m

Portland

jue. 8/21

11:42 am-5:55 pm

1 stop8h 13m

$309

DenverPortland

DEN - PWM

DENPWM

Denver Intl

lun. 8/25

11:40 pm-9:50 am

1 stop8h 10m

Portland

mié. 8/27

9:05 am-4:05 pm

2 stops9h 00m

$312

Colorado SpringsPortland

COS - PWM

COSPWM

Colorado Springs

lun. 8/18

5:30 am-3:49 pm

1 stop8h 19m

Portland

vie. 8/22

6:14 am-10:56 am

1 stop6h 42m

$332

DenverPortland

DEN - PWM

DENPWM

Denver Intl

vie. 8/15

2:00 pm-12:03 am

1 stop8h 03m

Portland

sáb. 8/23

6:31 am-6:08 pm

1 stop13h 37m

$336

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 39 results
1
2
3
4

Best time to book a flight from Colorado to Portland

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

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

Currently, January is the cheapest month in which you can book a flight from Colorado to Portland, Maine (average of $296). Flying from Colorado to Portland, Maine in July is currently the most expensive (average of $394). 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 PWM?

Find hourly flight availability from Colorado to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julio 31, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Colorado to Portland, Maine as you normally would.

Weekly flight availability from Colorado to Portland, Maine

Explore weekly flight availability from Colorado to Portland. 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 julio 31, 2025.

The most flights from USCO to PWM are scheduled on a Monday (1 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. 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 Portland. Reviews last updated julio 31, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Colorado to Portland to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,244 reviews

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,244 reviews
Southwest
8.0
Very good
4,244 reviews

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
8.0
Very good
7,980 reviews
Southwest
8.0
Very good
4,244 reviews

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,902 reviews
Southwest
8.0
Very good
4,244 reviews

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
JetBlue
7.3
Good
2,913 reviews
Southwest
8.0
Very good
4,244 reviews

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,244 reviews

Overall

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Related info for your journey

Find useful and relevant information for your journey from Colorado to Portland. 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 into for flights to Portland from Colorado?

    Located just 2.9 mi from the city center, Portland (PWM) is the airport most travelers will use when flying to Portland from Colorado.

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

    $129 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on JetBlue and Sun Country Air, with prices starting from $134 and $138, respectively.

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

    While some choose either Durango La Plata County - Portland or Grand Junction Regnl - Portland, Denver Intl - Portland is the most popular route from Colorado to Portland, Maine.

  • What are the cheapest flights from Colorado to Portland, Maine?

    Looking at all options, your cheapest flight can be booked for $273. While the most popular route (Denver Intl - Portland) can be booked for $278 on average our data indicates $665 when flying from Colorado to Portland, Maine.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Colorado to Portland, Maine (average of $296). Flying from Colorado to Portland, Maine in July is currently the most expensive (average of $394). 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

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Brunswick
North Conway
Auburn
Conway
Lewiston

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Colorado to Portland

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Boston flights
Baltimore to Boston flights
Dallas/Fort Worth to Boston flights
O'Hare Intl to Boston flights
Reagan-National to Boston flights
Dulles Intl to Boston flights
Atlanta to Boston flights
Newark to Boston flights
San Francisco to Boston flights
LaGuardia to Boston flights
Seattle to Boston flights
Philadelphia to Boston flights
Hobby to Boston flights
Sky Harbor Intl to Boston flights
Tampa to Boston flights
Minneapolis to Boston flights
John F Kennedy Intl to Boston flights
Orlando to Boston flights
Denver to Boston flights
George Bush Intcntl to Boston flights
Austin to Boston flights
Fort Lauderdale to Boston flights
Pittsburgh to Boston flights
Portland to Boston flights
Raleigh to Boston flights
San Diego to Boston flights
Ontario to Boston flights
Salt Lake City to Boston flights
Charlotte to Boston flights
LaGuardia to Portland flights
Nashville to Boston flights
Cleveland to Boston flights
John F Kennedy Intl to Portland flights
Cincinnati to Boston flights
Miami to Boston flights
Santa Ana to Boston flights
Reagan-National to Portland flights
Midway to Boston flights
West Palm Beach to Boston flights
Burbank to Boston flights
Dulles Intl to Portland flights
Indianapolis to Boston flights
O'Hare Intl to Portland flights
Love Field to Boston flights
Columbus to Boston flights
Newark to Portland flights
Las Vegas to Boston flights
Detroit to Boston flights
Baltimore to Portland flights
Islip to Boston flights

Top 6 airlines flying from Colorado to Portland

Discover the top 6 airlines that operate flights from Colorado to Portland. 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 julio 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$158Average$250FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$212Average$486FlexibilityNo cancel feeOn-time71%
DeltaCheapest$236Average$332FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$249Average$315FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$279Average$463FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$294Average$653FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.