What airlines fly to Colorado?

United Airlines, American Airlines and Southwest are the top three most popular airlines that fly to Colorado from Maine according to our data. United Airlines is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Colorado. Keep in mind that there are 6 different airlines that fly to Colorado on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Maine to Colorado?

American Airlines, Frontier, and United Airlines are the most popular carriers operating from Maine to Colorado

How many flights depart from Maine to Colorado on average per day?

The number of flights available between Maine and Colorado is 10 per day as of September 2025. The most frequent departure time is 3:00PM, with 70% of daily flights leaving in the afternoon.

How long is the flight from Maine to Colorado?

Flight times from Maine to Colorado vary, but if you’re flying out of Portland and flying into Denver (one of the most popular routes), then the duration is 4h 26m on average. Another popular route from Maine to Colorado is flying from Bangor to Denver, which will take roughly 6h 54m. Keep in mind that layovers or delays could extend your travel time.

How many flights depart from Maine to Colorado on average per week?

The number of flights available between Maine and Colorado is 75 per week as of September 2025. The most frequent departure day is Mon, with 23% of weekly flights leaving on this day.

When did momondo last update prices for flights from Maine to Colorado?

Prices for flights from Maine to Colorado are updated daily.

How many operators does momondo search for flights from Maine to Colorado?

There are 8 operators available for flights from Maine to Colorado as of September 2025.

How old do you have to be to fly from Maine to Colorado?

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 Maine to Colorado.

What documentation or ID do you need to fly to Colorado?

The necessary travel and health documents for your Colorado trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$80 Cheap Flights from Maine to Colorado in 2025/26

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Find the cheapest flights from Maine to Colorado

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

12:45 pm - 9:27 pmBOS-DEN

10h 42m1 stop

11:07 am - 10:36 amDEN-BOS

21h 29m1 stop

$184Multiple Airlines

Find Deal

vie., dic. 5 - dom., dic. 7

5:40 pm - 10:05 pmBOS-DEN

6h 25m1 stop

8:45 am - 2:40 pmDEN-BOS

3h 55mnonstop

$185Southwest

Find Deal

mié., oct. 22 - mar., oct. 28

12:22 pm - 7:57 pmBOS-DEN

9h 35m1 stop

2:45 pm - 9:00 amDEN-BOS

16h 15m1 stop

$186Frontier

Find Deal

jue., oct. 23 - mié., oct. 29

12:49 pm - 11:10 pmBOS-DEN

12h 21m2 stops

8:47 pm - 7:27 amDEN-BOS

8h 40m1 stop

$188Frontier

Find Deal

vie., oct. 24 - dom., oct. 26

7:25 am - 10:18 amBOS-DEN

4h 53mnonstop

11:59 pm - 5:56 amDEN-BOS

3h 57mnonstop

$192United Airlines

Find Deal

dom., oct. 26 - jue., oct. 30

5:30 am - 11:48 amBOS-COS

8h 18m1 stop

12:45 pm - 9:35 pmCOS-BOS

6h 50m1 stop

$195American Airlines

Find Deal

mié., nov. 5 - mié., nov. 12

7:30 am - 3:47 pmBOS-COS

10h 17m1 stop

5:45 am - 5:22 pmCOS-BOS

9h 37m2 stops

$200American Airlines

Find Deal

mié., nov. 5 - mié., nov. 12

7:30 am - 10:02 amBOS-DEN

4h 32mnonstop

5:41 pm - 11:44 pmDEN-BOS

4h 03mnonstop

$203United Airlines

Find Deal

mar., oct. 7 - sáb., oct. 18

7:50 am - 10:30 amBOS-DEN

4h 40mnonstop

11:40 am - 5:40 pmDEN-BOS

4h 00mnonstop

$207Delta

Find Deal

mar., oct. 21 - sáb., oct. 25

7:50 am - 10:30 amBOS-DEN

4h 40mnonstop

11:40 am - 5:40 pmDEN-BOS

4h 00mnonstop

$237Delta

Find Deal

mar., oct. 21 - sáb., oct. 25

Southwest flights from Maine to Colorado

Our best Southwest deals on Maine to Colorado flight tickets

Southwest

Oct 22

BOS5:40 pmBoston Logan Intl

6h 25m

1 stop

DEN10:05 pmDenver Intl

Oct 28

DEN8:45 amDenver Intl

3h 55m

BOS2:40 pmBoston Logan Intl

$185

Find similar

Southwest

Oct 7

BOS9:10 amBoston Logan Intl

9h 00m

2 stops

DEN4:10 pmDenver Intl

Oct 17

DEN6:40 pmDenver Intl

3h 50m

BOS12:30 amBoston Logan Intl

$190

Find similar

Southwest

Oct 21

BOS6:15 pmBoston Logan Intl

6h 25m

1 stop

DEN10:40 pmDenver Intl

Oct 28

DEN11:40 pmDenver Intl

6h 45m

1 stop

BOS8:25 amBoston Logan Intl

$195

Find similar

United Airlines flights from Maine to Colorado

Our best United Airlines deals on Maine to Colorado flight tickets

United Airlines

Oct 26

BOS7:25 amBoston Logan Intl

4h 53m

DEN10:18 amDenver Intl

Oct 30

DEN11:59 pmDenver Intl

3h 57m

BOS5:56 amBoston Logan Intl

$192

Find similar

United Airlines

Oct 7

BOS7:30 amBoston Logan Intl

4h 32m

DEN10:02 amDenver Intl

Oct 18

DEN5:41 pmDenver Intl

4h 03m

BOS11:44 pmBoston Logan Intl

$203

Find similar

United Airlines

Oct 4

BOS7:30 amBoston Logan Intl

4h 32m

DEN10:02 amDenver Intl

Oct 7

DEN1:40 pmDenver Intl

7h 16m

1 stop

BOS10:56 pmBoston Logan Intl

$213

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

vie. 12/5

12:45 pm-9:27 pm

1 stop10h 42m

Denver Intl

dom. 12/7

11:07 am-10:36 am

1 stop21h 29m

$184

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

mié. 10/22

5:40 pm-10:05 pm

1 stop6h 25m

Denver Intl

mar. 10/28

8:45 am-2:40 pm

Nonstop3h 55m

$185

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

jue. 10/23

12:22 pm-7:57 pm

1 stop9h 35m

Denver Intl

mié. 10/29

2:45 pm-9:00 am

1 stop16h 15m

$186

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

vie. 10/24

12:49 pm-11:10 pm

2 stops12h 21m

Denver Intl

dom. 10/26

8:47 pm-7:27 am

1 stop8h 40m

$188

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

dom. 10/26

7:25 am-10:18 am

Nonstop4h 53m

Denver Intl

jue. 10/30

11:59 pm-5:56 am

Nonstop3h 57m

$192

BostonColorado Springs

BOS - COS

BOSCOS

Boston Logan Intl

mié. 11/5

5:30 am-11:48 am

1 stop8h 18m

Colorado Springs

mié. 11/12

12:45 pm-9:35 pm

1 stop6h 50m

$195

BostonColorado Springs

BOS - COS

BOSCOS

Boston Logan Intl

mié. 11/5

7:30 am-3:47 pm

1 stop10h 17m

Colorado Springs

mié. 11/12

5:45 am-5:22 pm

2 stops9h 37m

$200

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

mar. 10/7

7:30 am-10:02 am

Nonstop4h 32m

Denver Intl

sáb. 10/18

5:41 pm-11:44 pm

Nonstop4h 03m

$203

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

mar. 10/21

7:50 am-10:30 am

Nonstop4h 40m

Denver Intl

sáb. 10/25

11:40 am-5:40 pm

Nonstop4h 00m

$207

BostonDenver

BOS - DEN

BOSDEN

Boston Logan Intl

mar. 10/21

7:50 am-10:30 am

Nonstop4h 40m

Denver Intl

sáb. 10/25

11:40 am-5:40 pm

Nonstop4h 00m

$237

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How to get the cheapest flight ticket from Maine to Colorado

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

Prices

Airlines

Other information

What is the cheapest month to fly to Colorado?

The month of January is, on average, the cheapest month to fly to Colorado from Maine, with most prices found around $347. The month of April is another great option to travel to Colorado, with average flight prices from Maine averaging around $373.

What is the cheapest day to depart on your flight to Colorado?

The cheapest day to depart from Maine to Colorado is on a Friday when prices can be found for as low as $553. On the other hand, Sunday is the most expensive day to depart from Maine because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $762.

What is the cheapest time of day to depart on your flight to Colorado?

The cheapest time of day to fly to Colorado is in the evening when flights can be purchased for as low as $361. In the morning is when there is more demand to fly to Colorado, so prices are often more expensive at around $762 per ticket.

What is the cheapest Maine to Colorado flight route?

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

How far in advance should I book a flight to Colorado?

You are more likely to see cheaper flights to Colorado from Maine when booking weeks ahead of your departure date. In general, you can expect to find flights to Colorado for around $452 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Colorado from Maine for as low as $354 on momondo.

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

There are 4 cabin classes available to choose from on Maine to Colorado 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 Maine to Colorado flights?

You could potentially save up to 7% on your flight if you consider stops on a Maine to Colorado flight.

Cheap Maine to Colorado flight deals and tips

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

Best Price Found	$243
Fastest flight time	4h 26m
Direct flights	Every day
Airports in Colorado	1 airport

The best one-way flight to Colorado from Maine in the past 72 hours is $243. The best round-trip flight deal from Maine to Colorado found on momondo in the last 72 hours is $318.

The fastest flight from Maine to Colorado takes 4h 26m

Direct flights go from Maine to Colorado every day.

There is 1 airport near Colorado: Denver Intl (DEN)

Search flight deals

When did momondo last update prices for flights from Maine to Colorado?
Prices for flights from Maine to Colorado are updated daily.
How many operators does momondo search for flights from Maine to Colorado?
There are 8 operators available for flights from Maine to Colorado as of September 2025.
How old do you have to be to fly from Maine to Colorado?
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 Maine to Colorado.
What documentation or ID do you need to fly to Colorado?
The necessary travel and health documents for your Colorado trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Maine to Colorado?
Based on momondo bookings for flights between Maine and Colorado, the leading plane model is Boeing 737-800, making up 78.40% of the total bookings. Other popular models include Airbus A319 with 3.70%, Airbus A321-100/200 with 3.09%, and Airbus A320-100/200 with 3.09%.

Best airlines flying from Maine to Colorado

Compare and see reviews for airlines that fly from Maine to Colorado with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $149	Free Cancellation	Rating 5.8 3,165 reviews	Search Frontier flights
JetBlue	PriceFrom $226	Free Cancellation	Rating 7.2 2,912 reviews	Search JetBlue flights
American Airlines	PriceFrom $254	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Delta	PriceFrom $256	Free Cancellation	Rating 7.9 7,974 reviews	Search Delta flights
United Airlines	PriceFrom $290	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights
Southwest	PriceFrom $302	Free Cancellation	Rating 8.0 4,244 reviews	Search Southwest flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Maine to Colorado for you.

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

Yes. All flights to Colorado from Maine on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for Maine to Colorado flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Colorado from Maine. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Colorado 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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Find better results for your trip to Colorado

Popular cities in Colorado

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Cheap flights from Maine to Colorado from $80

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Maine to Colorado departing on 12/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Maine to Colorado

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Southwest flights from Maine to Colorado

Our best Southwest deals on Maine to Colorado flight tickets

United Airlines flights from Maine to Colorado

Our best United Airlines deals on Maine to Colorado flight tickets

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Use the filters below to find and compare flights from Maine to Colorado that are best for you.

See travel insights to Colorado from

How to get the cheapest flight ticket from Maine to Colorado

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 Colorado?

The month of January is, on average, the cheapest month to fly to Colorado from Maine, with most prices found around $347. The month of April is another great option to travel to Colorado, with average flight prices from Maine averaging around $373.

What is the cheapest day to depart on your flight to Colorado?

The cheapest day to depart from Maine to Colorado is on a Friday when prices can be found for as low as $553. On the other hand, Sunday is the most expensive day to depart from Maine because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $762.

What is the cheapest time of day to depart on your flight to Colorado?

The cheapest time of day to fly to Colorado is in the evening when flights can be purchased for as low as $361. In the morning is when there is more demand to fly to Colorado, so prices are often more expensive at around $762 per ticket.

What is the cheapest Maine to Colorado flight route?

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

How far in advance should I book a flight to Colorado?

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

There are 4 cabin classes available to choose from on Maine to Colorado 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 Maine to Colorado flights?

You could potentially save up to 7% on your flight if you consider stops on a Maine to Colorado flight.

What is the cheapest airline that flies from Maine to Colorado?

American Airlines, Frontier, and United Airlines are the most popular carriers operating from Maine to Colorado

What airlines fly to Colorado?

How many flights depart from Maine to Colorado on average per day?

The number of flights available between Maine and Colorado is 10 per day as of September 2025. The most frequent departure time is 3:00PM, with 70% of daily flights leaving in the afternoon.

How many flights depart from Maine to Colorado on average per week?

The number of flights available between Maine and Colorado is 75 per week as of September 2025. The most frequent departure day is Mon, with 23% of weekly flights leaving on this day.

How long is the flight from Maine to Colorado?

Cheap Maine to Colorado flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Colorado

When did momondo last update prices for flights from Maine to Colorado?

How many operators does momondo search for flights from Maine to Colorado?

How old do you have to be to fly from Maine to Colorado?

What documentation or ID do you need to fly to Colorado?

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

Best airlines flying from Maine to Colorado

Compare and see reviews for airlines that fly from Maine to Colorado with momondo

Why use momondo?

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

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

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

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

An easier way to manage your Colorado 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Colorado

Popular cities in Colorado

Popular flights according to clicks in the last 7 days on momondo