$65 Find Cheap Flights from Colorado to Maine

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Low seasonJanuary
High seasonJuly
Cheapest flight$65
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 5% increase in price.
Flight from Denver to Boston

FAQs for booking flights from Colorado to Maine

  • How does KAYAK find such low prices on flights from Colorado to Maine?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Colorado to Maine.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Colorado to Maine?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Colorado to Maine is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Colorado to Maine?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Colorado to Maine with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Colorado to Maine?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Colorado to Maine up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which is the cheapest airport to fly into in Maine?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Maine is Portland Airport (PWM), with an average flight price of $353.

  • What is the cheapest day to fly to Maine?

    Based on KAYAK data, the cheapest day to fly to Maine is Wednesday where round-trip tickets can be as cheap as $553. On the other hand, the most expensive day to fly is Friday, where round-trip prices are $710 on average.

  • What is the cheapest time of day to fly to Maine?

    The cheapest time of day to fly to Maine is generally at night, when round-trip flights cost $368 on average. Morning departures are around 55% more expensive than evening flights, on average. The most expensive time of day to fly to Maine is generally in the morning, which is peak travel time and where the average cost of a ticket is $664.

  • What is the cheapest flight to Maine?

    The cheapest ticket to Maine from Colorado found in the last 72 hours was to Portland, at $374 round-trip. The most popular route is Denver (DEN) to Portland (PWM) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $374.

  • What is the cheapest month to fly from Colorado to Maine?

    The cheapest month for flights from Colorado to Maine is January, when tickets cost $331 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of round-trip tickets is $796 and $522 respectively.

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

    To get a below average price on the flight from Colorado to Maine, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

  • How long is the flight to Maine?

    An average nonstop flight from Colorado to Maine takes 9h 08m, covering a distance of 1924 miles. The shortest route is Denver (DEN) to Boston (BOS) with an average flight time of 3h 41m.

  • What are the most popular destinations in Maine?

    Based on KAYAK flight searches, the most popular destination is Boston (67% of total searches to Maine). The next most popular destinations are Portland (26%) and Bangor (6%). Searches for flights to Bar Harbor (0%), to Augusta (0%) and to Rockland (0%) are also popular.

Reviews of the top 5 airlines serving from Colorado to Maine

 
Need help choosing which airline to fly with from Colorado to Maine? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4266 reviews
8.2Boarding
7.6Entertainment
8.6Crew
7.0Food
8.0Comfort
Airline reviews

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

4.0 OkayTraci, Jun 2025OAK - SEA
Read more Southwest reviews

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

For my birthday trip this was my second time ever flying, this trip was the best.

after landing, we stay 2 hours on the taxi way before reaching the gate The airline and the crew were good though

No trays in our seats, we sat in first row, purchased a business class fare. Had to hold our drinks and snack in our hands. No plugs for our cell phones. Had to pay for it a drink cocktail each. Seats so uncomfortable.

Flight wasn’t even full, but too many carry-ons caused us to run out of bin space. New bag fee has folks who would usually check their bags carrying on. Watching Southwest morph into Spirit/Frontier is so sad to watch

Sat on tarmac for 2 hours and then missed my connecting flight

First time traveling on Southwest since bag fees were implemented. Usual good service. Just more expensive now.

Everything was on time. I was disappointed by the front section female, African American flight attendant. I did not see her name tag or would have identified by name not race. As passengers moved to the bathroom early in flight, she would say with a disdainful tone “I have to say the seat belt light is on” then go back to her book. Better trained flight attendants say something like be careful the seat belt light is on.

Cluster mess boarding. Can't wait for SWA reserved seating. Internet didn't seem to work on the plane.

Flights delayed by 4-6 hours. Boarding was a mess and unclear. Bags were not at arrival airport and had never even been put on the plane. No idea when I’ll get them. Don’t fly into Denver!

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

My flight was extremely cold. I had a jacket and a cover was left in each seat. The cover was extremely thin and I have a disability, fibromyalgia and arthrithis and AC air is the worst. I closed my vent and my husbands vent and it still was frigid. I asked the attendant if I could get another cover and she quickly almost dismissively and totally unconcerned stating, (I quote) (one per chair) and walked off so quickly that I didn't get a chance to explain to her that I literally have adisability. I didnt want to make a seen so I set on that flight for over 5 hours in pain, joints locking up and extremely uncomfortable. When my fibromyalgia flares up my joints not only ache but they will lock up also and it takes me days to get back to my regular self even though I take medication for it. I felt like it would not have hurt anyone at all for her to just give me an extra cover because I'm sure they have all types of medical issues in people that fly every day.

After all the weather issues at least they got me to my destination the next day

My flight was canceled after being rescheduled for four days canceling my trip. Kayak and everyone affiliated with it I.e the airlines, and just fly have been excruciating to deal with. My trip to visit family had to be canceled as there was no way to make it. I am furious at all of you.

They delayed our flight because of bad weather in NY which was completely understandable. Then they cancelled our flight and a later flight that evening. The earliest we could fly was the next morning. We ended up buying last minute tickets on another airline and made it home slightly delayed but safely that evening. Delta kept saying it was weather related but if that was the case how did we make it back on another airline? The weather in NY was cloudy but not bad.

From Atlanta to Savannah - flight connection was way to short (we weren't even late landing ) and flight was already boarding when we landed - we were told we were the last on board and so we had to gate check our bags. Once we got on the plane, there were at least seven open bag spots so that was unnecessary delay. There should be better communication between the gate agent and the crew.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

Not a "Delta" issue, but a JFK issue: We booked a connecting flight with 3 1/2 hours between to clearn immigration and customs. Our inbound flight (BCN to JFK) was on the taxiway 45 minutes which ate into our layover time. Immigtration was insanely quick with the CBP MPC app; however, clearing TSA (again, after we were ALREADY cleared in Spain on the inbound international flight) took over 95 minutes. This left us with 10 minutes before boarding the connecting flight (JFK to SAN) to walk to the far end of Terminal 4 and try to find food. We didn't find any food that could promise to serve us in under 10 minutes so we boarded the Delta flight after coming off a plance and an 8-hour flight knowing that we wouldn't be served any food on the next 5 1/2 hour flight. I feel like Delta needs to put pressure on the JFK TSA to open more screening stations (by our count, we saw only 5 scanners open and a line of - as we said - over 90 minutes. The insult is that we WERE ALREADY SCREENED through TSA, but as you come off one flight into the USA, you have to go through the whole process again. It seems like if you have a connecting flight, there should be a way to pass through immigration and customs without needing to return through TSA.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Overall poor for me I paid extra for seats with leg room and my regional flights exit row seats have less leg room then the others that's money that could have been saved and on my final flight home the flights air was not operating it was unbearably hot in the cabin I will be contacting United and filing a DOT complaint

I don’t understand the purpose of the orange “priority” tag on my bag. This tagged, my bag is last or near to the last bag to come down the carousel at IAH.

Overall, it was a good experience. Boarding was good and there was plenty of overhead bin space for everyone’s carryons (even when we boarded toward the end). Only improvement would be to offer trash service more regularly.

David went above and beyond to make our flight the best that it could be

No food service almost missed because of first flight delays

Spend hours delayed with no food, water anything sitting on the aieplane with no ability to eat or use the restroom. My entire experience was the absolute worst. I will never fly jet Blue again.

It would have been nice if they had offered more than one set of snacks

Seats were not too comfortable; it was impossible to locate the underseat power outlet.

You get what you pay for with JetBlue. Every little thing costs more, you are nickel and dimed until the end. Entertainment doesn’t function. Flight attendants do the bare minimum.

The check in and boarding process was a bit of a cluster. Two people at the counter to check in, three random lines that nobody knew which was for what, and people kept getting shuffled from one line to another for no apparent reason because then they’d get shuffled back and end up getting out further back in the line than they were originally. I only had to hand my already checked bag over and it took 45 minutes. I was never assigned a seat so when I tried to board I was pulled out of line again while someone had to try to manually assign me a seat. During the flight I got up to go to the bathroom, and there was an attendant in the aisle offering pillows etc and it was a 30 min wait unbuckled standing by the bathrooms because she said I couldn’t go past her. First and last time flying jet blue to be honest.

Communication since no reason or explanation was given for 3 hrs delay

Flight was delayed several 3 hours - no reason was given and no communication what so ever.

No overhead baggage room even though I was seated in row 2. Consequently had to check in my carry on bag. Baggage carousel was jammed. Took 45 min to get my bag.

Excellent. Although they used to greet me as a mosaic member and provide a free drink, early boarding helps me to keep coming back to JetBlue.

Cancelled flight with no specific instructions to get a boarding pass for another flight. The whole flight of people were in line for an hour because there was only 1 person to help at the desk. This was unusual for JetBlue.

AA re-routed flight from HNL to LAX due to delay. My group of 3 with reserved seats in row 9 was broken up, with one assigned to a middle seat, another in the last row of the plane. Not happy. No explanation to the delay. No apologies. No compensation. Would have been nice to be offered an Admiral Club admission or a voucher for the extra 3 hours of layover in LAX. Could not hear the boarding gate announcements in LAX. Adjacent gate was boarding at the same time. Loud speakers were competing against each other. Barely made my boarding group.

Boarding gate in Honolulu was staffed with a great clerk with a soothing voice despite the flight delay of over an hour. Flight attendants in the plane were all grumpy, not pleasant looking bunch. Their sour attitude showed throughout the flight. Inly able to get a select few movies started. Most of the movie links in the “free entertainment” did not work.

Above and beyond effort from this crew in a tough situation. So helpful and understanding. Thank you!

The flight delay in Dallas created a domino effect that impacted all connecting flights, leading to an increase in the number of connections. As a result, I missed my flight from Casablanca to Marrakech due to the tight turnaround when landing in Casablanca. CMN Airport was understaffed; only one employee was available to assist passengers while others just stood by and watched. It was an extremely frustrating situation. Many passengers were crying and banging their hands on the counter while talking to customer service representative Allabough. Unfortunately, Allabough couldn’t change my flight in the system. At the same time, I was on the phone with an American Airlines customer service representative named Solomon, who said he couldn’t make the change either. So, I decided to take an ONYA Voyages train from Casablanca to Marrakech to reach my destination on Friday, June 26. It turned out to be an unpredictable trip.

The flight was fine and the crew awesome. The problem is ORD and AA. Computers went down, ORD fell apart and a 40 min flight turned into a 3 hour trip. Guess the answer is to not try and fly to ORD after noon. But, as I said, crew was awesome and did everything they could to lesson the flight time.

Almost a 6 hour flight and the only food option is a cheese plate… and chips. Also how is it there are no options for texting on American. I’ll be going back to delta and united.

This flight never occurred because AA couldn’t get their act together.

Terrible. Cancelled my original flight. It made getting a boarding pass difficult. The AA employee (in a loud voice, so everyone around could hear) griped at me for not getting a boarding pass 24 hours before. I asked how I was supposed to do that when I had no idea what flight I was going to be on. She said (loudly), “Talk to AA customer service, not me!” I could certainly tell serving customers was not important to her. Our new flight was set to a completely different city. We had to change our rental car, and the price went way up. It took 2-1/2 hours to get checked in. By then our new flight had left. We ended up on stand by and had to split up the family to get to our destination. It cost us the whole first day of the trip. AA needs to employ people who actually care about doing a good job. I suppose those people are getting harder to find, but atleast try.

Am still mad at American airlines. You should know it's us travel nurses who are your customers and you treat us like nonsense it's not ok. American airlines took my money, no refund for whatsoever. A trip that was of 466 and I paid 466 and 833 then they chose for me where to sit and refund my seat choices and gave me expensive seats for 79 USD. Kayak doesn't help at all after booking you are on your own. Skyscanner is better

This was a horrible experience. For a first class experience, my chair was held together by 3M tape - and I have a photo. The crew weren’t very attentive, somewhat dismissive and forgot my drink and snack, the chair reclined about 3 inches on a 6-hour cross country flight. I was also not informed that there was no lounge available in Newark airport because of renovations, so all around this was one of the worst experiences and I would actively avoid both American and Alaska Air going forward.

Book cheap flights from Colorado to Maine

Recent round-trip flight deals

9/11Thu
1 stopFrontier
6h 59mDEN-BOS
9/15Mon
1 stopFrontier
10h 31mBOS-DEN
$161
8/13Wed
1 stopFrontier
8h 45mDEN-BOS
8/14Thu
1 stopFrontier
8h 20mBOS-DEN
$164
10/22Wed
1 stopAmerican Airlines
7h 53mMTJ-BOS
10/28Tue
1 stopAmerican Airlines
9h 29mBOS-MTJ
$233
7/16Wed
1 stopAmerican Airlines
6h 46mCOS-BOS
7/23Wed
1 stopAmerican Airlines
9h 37mBOS-COS
$237
10/17Fri
1 stopUnited Airlines
6h 19mMTJ-BOS
10/22Wed
2 stopsUnited Airlines
9h 16mBOS-MTJ
$238
8/14Thu
1 stopSouthwest
6h 40mDEN-BOS
8/25Mon
2 stopsSouthwest
8h 30mBOS-DEN
$242
7/31Thu
1 stopSouthwest
5h 55mCOS-BOS
8/16Sat
1 stopSouthwest
6h 05mBOS-COS
$257
9/22Mon
2 stopsDelta
11h 32mDEN-BGR
9/30Tue
1 stopDelta
9h 22mBGR-DEN
$262
8/23Sat
1 stopUnited Airlines
7h 26mCOS-BOS
8/31Sun
1 stopUnited Airlines
6h 39mBOS-COS
$265
9/2Tue
1 stopDelta
7h 54mDEN-BGR
9/9Tue
1 stopDelta
9h 46mBGR-DEN
$273

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Recent one-way flight deals

10/18Sat
1 stopFrontier
7h 56mDEN-BOS
$65
10/25Sat
1 stopFrontier
18h 11mDEN-BOS
$67
7/27Sun
nonstopDelta
4h 01mDEN-BOS
$109
10/7Tue
nonstopDelta
4h 05mDEN-BOS
$114
8/5Tue
1 stopAmerican Airlines
6h 45mDEN-BOS
$119
7/31Thu
1 stopSouthwest
5h 55mCOS-BOS
$119
9/16Tue
1 stopUnited Airlines
7h 14mDEN-BOS
$124
7/29Tue
2 stopsAmerican Airlines
8h 16mCOS-BOS
$124
9/6Sat
2 stopsSouthwest
10h 35mDEN-BOS
$129
9/11Thu
1 stopUnited Airlines
8h 56mCOS-BOS
$139

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Last minute flights from Colorado to Maine

Last minute flight, train and bus deals

7/8Tue
multi-stopFrontier
8h 45mDEN-BOS
7/12Sat
multi-stopFrontier
11h 01mBOS-DEN
$256
7/5Sat
multi-stopFrontier
17h 02mDEN-BOS
7/11Fri
multi-stopFrontier
13h 55mBOS-DEN
$276
7/8Tue
multi-stopDelta
6h 05mDEN-BOS
7/16Wed
nonstopDelta
4h 39mBOS-DEN
$327
7/8Tue
nonstopDelta
4h 05mDEN-BOS
7/22Tue
nonstopDelta
4h 39mBOS-DEN
$335
7/8Tue
multi-stopAmerican Airlines
8h 15mDEN-BOS
7/22Tue
multi-stopAmerican Airlines
8h 21mBOS-DEN
$355
7/8Tue
multi-stopSouthwest
6h 00mDEN-BOS
7/12Sat
nonstopSouthwest
4h 30mBOS-DEN
$387
7/8Tue
multi-stopSouthwest
7h 35mDEN-BOS
7/16Wed
nonstopSouthwest
4h 30mBOS-DEN
$395
7/8Tue
multi-stopAmerican Airlines
6h 56mDEN-PWM
7/12Sat
multi-stopAmerican Airlines
9h 14mPWM-DEN
$449
7/7Mon
nonstopUnited Airlines
3h 55mDEN-PWM
7/16Wed
nonstopUnited Airlines
4h 38mPWM-DEN
$479
7/7Mon
multi-stopUnited Airlines
8h 34mDEN-PWM
7/16Wed
nonstopUnited Airlines
4h 38mPWM-DEN
$489

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Everything you need to know for your flight to Maine

Cabin class types available on flights to Colorado

Cabin classes available on flights to Colorado. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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