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Cheap flights from Colorado to Portland from $99

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to Portland departing on 3/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
6:20 am - 2:55 pm
DEN
-
PWM
6h 35m
1 stop
Southwest Logo
5:30 am - 10:40 am
PWM
-
DEN
7h 10m
1 stop
$270Southwest
Tue, Mar 3 - Tue, Mar 10
Southwest Logo
6:20 am - 2:55 pm
DEN
-
PWM
6h 35m
1 stop
Southwest Logo
5:30 am - 2:25 pm
PWM
-
DEN
10h 55m
2 stops
$275Southwest
Tue, Mar 3 - Tue, Mar 10
American Airlines Logo
12:53 pm - 11:51 pm
DEN
-
PWM
8h 58m
1 stop
American Airlines Logo
8:01 am - 1:03 pm
PWM
-
DEN
7h 02m
1 stop
$278American Airlines
Tue, Jun 2 - Tue, Jun 9
American Airlines Logo
6:50 am - 6:11 pm
DEN
-
PWM
9h 21m
2 stops
American Airlines Logo
12:44 pm - 10:40 pm
PWM
-
DEN
11h 56m
2 stops
$280American Airlines
Tue, Mar 3 - Tue, Mar 10
American Airlines Logo
2:00 pm - 11:51 pm
DEN
-
PWM
7h 51m
1 stop
American Airlines Logo
5:04 pm - 12:07 am
PWM
-
DEN
9h 03m
2 stops
$283American Airlines
Tue, Jun 2 - Tue, Jun 9
United Airlines Logo
1:40 pm - 11:20 pm
DEN
-
PWM
7h 40m
1 stop
United Airlines Logo
2:10 pm - 9:47 pm
PWM
-
DEN
9h 37m
1 stop
$289United Airlines
Tue, Feb 24 - Sat, Feb 28
Southwest Logo
11:55 pm - 11:55 am
DEN
-
PWM
10h 00m
1 stop
Southwest Logo
2:50 pm - 10:35 pm
PWM
-
DEN
9h 45m
1 stop
$294Southwest
Wed, Mar 11 - Mon, Mar 16
Delta Logo
2:13 pm - 11:06 pm
MTJ
-
PWM
6h 53m
1 stop
Delta Logo
5:31 am - 1:14 pm
PWM
-
MTJ
9h 43m
1 stop
$299Delta
Wed, Feb 18 - Sun, Feb 22
Delta Logo
1:22 pm - 12:18 am
COS
-
PWM
8h 56m
2 stops
Delta Logo
5:31 am - 12:25 pm
PWM
-
COS
8h 54m
1 stop
$301Delta
Tue, Feb 24 - Mon, Mar 2
United Airlines Logo
6:00 am - 3:14 pm
DEN
-
PWM
7h 14m
1 stop
United Airlines Logo
3:10 pm - 9:56 pm
PWM
-
DEN
8h 46m
1 stop
$307United Airlines
Tue, Feb 24 - Mon, Mar 2

Delta flights from Colorado to Portland, Maine

Our best Delta deals on Colorado to Portland, Maine flight tickets
Delta
Apr 29
DEN6:20 amDenver Intl
7h 37m
1 stop
PWM3:57 pmPortland
May 4
PWM2:51 pmPortland
9h 58m
1 stop
DEN10:49 pmDenver Intl
$237
Delta
Feb 18
MTJ2:13 pmMontrose County
6h 53m
1 stop
PWM11:06 pmPortland
Feb 22
PWM5:31 amPortland
9h 43m
1 stop
MTJ1:14 pmMontrose County
$299
Delta
Feb 24
COS1:22 pmColorado Springs
8h 56m
2 stops
PWM12:18 amPortland
Mar 2
PWM5:31 amPortland
8h 54m
1 stop
COS12:25 pmColorado Springs
$301

United Airlines flights from Colorado to Portland, Maine

Our best United Airlines deals on Colorado to Portland, Maine flight tickets
United Airlines
Feb 24
DEN12:46 pmDenver Intl
8h 34m
1 stop
PWM11:20 pmPortland
Mar 3
PWM6:00 amPortland
8h 12m
1 stop
DEN12:12 pmDenver Intl
$279
United Airlines
Feb 24
DEN12:46 pmDenver Intl
8h 34m
1 stop
PWM11:20 pmPortland
Mar 3
PWM6:00 amPortland
8h 12m
1 stop
DEN12:12 pmDenver Intl
$289
United Airlines
Feb 26
DEN6:00 amDenver Intl
7h 14m
1 stop
PWM3:14 pmPortland
Mar 2
PWM3:10 pmPortland
10h 26m
1 stop
DEN11:36 pmDenver Intl
$306

momondo Fare Finder

 
Customize your flight search to find flights from Colorado to Portland, Maine 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, momondo users made 832,500 searches. Data last updated February 4, 2026.
Use the filters below to find and compare flights from Colorado to Portland, Maine that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Tue 3/3

6:20 am-2:55 pm

1 stop6h 35m

Portland

Tue 3/10

5:30 am-10:40 am

1 stop7h 10m

$270

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Tue 3/3

6:20 am-2:55 pm

1 stop6h 35m

Portland

Tue 3/10

5:30 am-2:25 pm

2 stops10h 55m

$275

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Tue 6/2

12:53 pm-11:51 pm

1 stop8h 58m

Portland

Tue 6/9

8:01 am-1:03 pm

1 stop7h 02m

$278

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Tue 3/3

6:50 am-6:11 pm

2 stops9h 21m

Portland

Tue 3/10

12:44 pm-10:40 pm

2 stops11h 56m

$280

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Tue 6/2

2:00 pm-11:51 pm

1 stop7h 51m

Portland

Tue 6/9

5:04 pm-12:07 am

2 stops9h 03m

$283

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Tue 2/24

1:40 pm-11:20 pm

1 stop7h 40m

Portland

Sat 2/28

2:10 pm-9:47 pm

1 stop9h 37m

$289

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Wed 3/11

11:55 pm-11:55 am

1 stop10h 00m

Portland

Mon 3/16

2:50 pm-10:35 pm

1 stop9h 45m

$294

MontrosePortland

MTJ - PWM

MTJPWM

Montrose County

Wed 2/18

2:13 pm-11:06 pm

1 stop6h 53m

Portland

Sun 2/22

5:31 am-1:14 pm

1 stop9h 43m

$299

Colorado SpringsPortland

COS - PWM

COSPWM

Colorado Springs

Tue 2/24

1:22 pm-12:18 am

2 stops8h 56m

Portland

Mon 3/2

5:31 am-12:25 pm

1 stop8h 54m

$301

DenverPortland

DEN - PWM

DENPWM

Denver Intl

Tue 2/24

6:00 am-3:14 pm

1 stop7h 14m

Portland

Mon 3/2

3:10 pm-9:56 pm

1 stop8h 46m

$307

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Portland from

How to get the cheapest flight ticket from Colorado to Portland, Maine

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Portland, Maine?

The cheapest month to fly to Portland, Maine from Colorado is in November. Flight prices, which tend to average around $374, are often lower during this time because this is during the off-season. If you aren’t able to travel to Portland, Maine during the month of November, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $393.

What is the cheapest day to depart on your flight to Portland, Maine?

On average, the least expensive day to fly to Portland, Maine from Colorado is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $564. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Colorado because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $745.

What is the cheapest time of day to depart on your flight to Portland, Maine?

In the afternoon is the cheapest time of day to fly from Colorado to Portland, Maine when you can find flight prices for as low as $483. Flying to Portland, Maine in the afternoon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around $599. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Colorado to Portland flight route?

Fly from Denver Intl to Portland for the best Colorado - Portland flight prices

How far in advance should I book a flight to Portland, Maine?

You are more likely to see cheaper flights to Portland, Maine from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland, Maine for around $450 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland, Maine from Colorado for as low as $360 on momondo.

What cabin class options are available on Colorado to Portland flights?

There are 4 cabin classes available to choose from on Colorado to Portland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Colorado to Portland, Maine flights?

You could potentially save up to 22% on your flight if you consider stops on a Colorado to Portland, Maine flight.

Cheap Colorado to Portland, Maine flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to Portland, Maine

Best Price Found

$428

Fastest flight time

3h 56m

Direct flights

Every day

Airports in Portland, Maine

1 airport
The best flight deal from Colorado to Portland, Maine found on momondo in the last 72 hours is $428
The fastest flight from Colorado to Portland, Maine takes 3h 56m
Direct flights go from Colorado to Portland, Maine every day.
There is 1 airport in Portland, Maine. From Colorado there are direct flights to Portland (PWM).
Search flight deals

  • When did momondo last update prices for flights from Colorado to Portland Airport?

    Prices for flights from Colorado to Portland Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Colorado to Portland Airport?

  • How old do you have to be to fly from Colorado to Portland Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Colorado to Portland Airport.

  • What documentation or ID do you need to fly to Portland Airport?

    The required travel and health documents for your Portland Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Portland Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Colorado to Portland, Maine?

Best airlines flying from Colorado to Portland, Maine

Compare and see reviews for airlines that fly from Colorado to Portland, Maine with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $129Free CancellationRating
5.7
3,052 reviews
Search Frontier flights
JetBluePriceFrom $139Free CancellationRating
7.2
2,893 reviews
Search JetBlue flights
American AirlinesPriceFrom $192Free CancellationRating
7.2
11,222 reviews
Search American Airlines flights
DeltaPriceFrom $192Free CancellationRating
7.9
8,146 reviews
Search Delta flights
SouthwestPriceFrom $272Free CancellationRating
8.0
4,274 reviews
Search Southwest flights
United AirlinesPriceFrom $288Free CancellationRating
7.4
9,236 reviews
Search United Airlines flights

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
North Conway
Boothbay Harbor
Jackson
Conway
Freeport
Lewiston
Brunswick
Bartlett
Gorham
Auburn
Windham
Intervale
Bath
Oxford
Georgetown
Falmouth
Tamworth

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to Portland?

It is quick and easy to find Colorado to Portland flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Portland that suits you.

Can I find flights from Colorado to Portland with flexible booking policies on momondo?

momondo does allow users to show only those flights to Portland from Colorado which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Colorado to Portland?

Once all potential Colorado to Portland flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Colorado to Portland right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Colorado to Portland now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Portland and let you know when they change.

An easier way to manage your Portland, Maine trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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