$99 Find Cheap Flights from Colorado to Maine

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Low seasonJanuary
High seasonAugust
Cheapest flight$99
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly and prices are also 2% lower on average.
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 $400.

  • 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 $558. 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 34% 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 $649.

  • What is the cheapest flight to Maine?

    The cheapest ticket to Maine from Colorado found in the last 72 hours was to Portland, at $428 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 $428.

  • 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 $495 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 42m, covering a distance of 1924 miles. The shortest route is Denver (DEN) to Portland (PWM) with an average flight time of 3h 43m.

  • What are the most popular destinations in Maine?

    Based on KAYAK flight searches, the most popular destination is Boston (64% of total searches to Maine). The next most popular destinations are Portland (31%) and Bangor (5%). Searches for flights to Bar Harbor (0%), to Augusta (0%) and to Rockland (0%) are also popular.

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 4278 reviews
7.1Food
8.6Crew
7.6Entertainment
8.2Boarding
8.0Comfort
Airline reviews

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

10.0 ExcellentMichael, Jun 2025SMF - SEA
Read more Southwest reviews

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

Staff was far less than helpful at all times. Departure and arrival times mean nothing to Southwest. Extremely disappointed, will never fly with them again, and I’ll be sure to share my experience with all.

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent check-in. Crew was good. Excellent communication from flight deck.

Great overall. There was a bit of turbulence so they could only serve water because too much turbulence for the carts. Was glad they prioritized safety though

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

My flight was 6 pm 6/6. Every hour they delayed it again - air condition issues then no pilot then the crew had worked too many hours and cancelled the flight at 11 pm. Sent customers to NJ a 45 minutes uber ride to a hotel. Had to be back by 5 am for a 7 am flight and again no pilot etc with another three hours of delays.

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

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.

It was too hot in the cabin. The AC did not help.

Except for the 28 minute delay leaving and the earlier reschedule to a later takeoff time the flight was good.

Loved the leg room and tvs screens on the seats and free WiFi. Wish the price was lower and could save by rebooking

It took 1-1/2 hours to get our luggage after we landed. That to me is unacceptable

Loved the staff, boarding and drink options! Wish the comfort of the seat could have been better nevertheless

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

I’m impressed that we were on time in Sacramento after having a late departure in Newark and our made it. The staff was friendly and warm.

Cramped seats. FAA should make airlines have more legroom, for even short people complain

5.5 hour delay with no explanation on why, along with no proactive effort to reaccomodate me.

It was one of my worst flight ever. First they were changing the gate for at least 4 times, changing from gate D7 to D12 to D44. Considering the size of the Miami Airport, we are talking about long distance and the train at the airport was not working. Then the flight was delayed around one hour. Then finally we boarded into the plane and when everybody was seated, there was an announcement that there is an issue with one of the tire of the plane, so we all had to get out of the plane with our belongings, to replace the tire. So we had around 2.5-hour delay

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

Honestly, I haven’t flown American in years, probably due to the pandemic and my being unable to travel for certain periods in the last two years, but it was a good experience to dig out or obtain a new American Airlines account after many years of traveling for business with American in the past.

The plane was probably full boarding was easy. We were able to check our carry-on luggage for free. It was a return flight through Philly to LA. Never saw a stewardess do a demonstration of emergency Procedures. I think my flight was pretty full

Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious.

Book cheap flights from Colorado to Maine

Recent round-trip flight deals

6/26Thu
1 stopFrontier
30h 36mDEN-BOS
6/29Sun
1 stopFrontier
19h 59mBOS-DEN
$198
7/8Tue
1 stopFrontier
8h 45mDEN-BOS
7/12Sat
1 stopFrontier
13h 17mBOS-DEN
$200
7/10Thu
nonstopDelta
4h 01mDEN-BOS
7/15Tue
nonstopDelta
4h 39mBOS-DEN
$217
8/19Tue
nonstopSouthwest
3h 55mDEN-BOS
9/3Wed
nonstopSouthwest
4h 30mBOS-DEN
$222
7/9Wed
nonstopUnited Airlines
4h 02mDEN-BOS
7/15Tue
nonstopUnited Airlines
4h 34mBOS-DEN
$237
10/18Sat
nonstopDelta
4h 05mDEN-BOS
2/9Mon
nonstopDelta
5h 05mBOS-DEN
$242
7/9Wed
nonstopUnited Airlines
4h 03mDEN-BOS
7/15Tue
1 stopUnited Airlines
6h 28mBOS-DEN
$247
8/19Tue
1 stopAmerican Airlines
8h 58mCOS-BOS
8/31Sun
1 stopAmerican Airlines
6h 37mBOS-COS
$247
9/9Tue
1 stopAmerican Airlines
9h 04mDEN-BGR
9/17Wed
1 stopAmerican Airlines
10h 15mBGR-DEN
$247
7/4Fri
2 stopsSouthwest
7h 10mDEN-BOS
7/18Fri
1 stopSouthwest
6h 45mBOS-DEN
$283

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Recent one-way flight deals

7/15Tue
1 stopFrontier
8h 45mDEN-BOS
$99
7/8Tue
1 stopFrontier
8h 45mDEN-BOS
$100
8/18Mon
1 stopSouthwest
10h 15mCOS-BOS
$110
9/30Tue
nonstopDelta
4h 05mDEN-BOS
$114
7/22Tue
1 stopUnited Airlines
7h 29mDEN-BOS
$119
9/27Sat
1 stopAmerican Airlines
6h 23mDEN-BOS
$124
9/4Thu
2 stopsSouthwest
6h 50mDEN-BOS
$134
7/18Fri
1 stopAmerican Airlines
8h 23mCOS-BOS
$139
8/18Mon
2 stopsDelta
13h 42mCOS-BOS
$144
7/7Mon
nonstopUnited Airlines
4h 03mDEN-BOS
$154

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Last minute flights from Colorado to Maine

Last minute flight, train and bus deals

6/21Sat
multi-stopFrontier
30h 36mDEN-BOS
6/29Sun
multi-stopFrontier
29h 02mBOS-DEN
$210
6/21Sat
multi-stopFrontier
14h 14mDEN-BOS
7/12Sat
multi-stopFrontier
11h 01mBOS-DEN
$215
6/21Sat
nonstopDelta
4h 03mDEN-BOS
7/12Sat
nonstopDelta
4h 39mBOS-DEN
$297
6/20Fri
multi-stopDelta
6h 06mDEN-BOS
7/12Sat
nonstopDelta
4h 39mBOS-DEN
$327
6/21Sat
multi-stopAmerican Airlines
6h 29mCOS-BOS
6/28Sat
multi-stopAmerican Airlines
7h 29mBOS-COS
$352
6/19Thu
multi-stopAmerican Airlines
7h 58mDEN-BOS
7/2Wed
multi-stopAmerican Airlines
7h 17mBOS-DEN
$400
6/21Sat
multi-stopSouthwest
5h 50mDEN-BOS
7/22Tue
multi-stopSouthwest
8h 10mBOS-DEN
$405
6/20Fri
multi-stopUnited Airlines
7h 41mDEN-BOS
7/23Wed
multi-stopUnited Airlines
10h 50mBOS-DEN
$407
6/19Thu
multi-stopUnited Airlines
8h 31mDEN-BOS
7/22Tue
multi-stopUnited Airlines
8h 50mBOS-DEN
$412
6/21Sat
multi-stopSouthwest
5h 50mDEN-BOS
7/12Sat
multi-stopSouthwest
8h 35mBOS-DEN
$422

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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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