$74 Find Cheap Flights from New Hampshire to Colorado

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Low seasonApril
High seasonJuly
Cheapest flight$74
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from Boston to Denver

FAQs for booking flights from New Hampshire to Colorado

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

    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 New Hampshire to Colorado.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from New Hampshire to Colorado 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 New Hampshire to Colorado?

    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 New Hampshire to Colorado 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 New Hampshire to Colorado?

    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 New Hampshire to Colorado up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest day to fly to Colorado?

    Based on KAYAK data, the cheapest day to fly to Colorado is Wednesday where round-trip tickets can be as cheap as $396. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $606 on average.

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

    The cheapest time of day to fly to Colorado is generally at night, when round-trip flights cost $453 on average. Morning departures are around 8% more expensive than evening flights, on average. The most expensive time of day to fly to Colorado is generally in the morning, which is peak travel time and where the average cost of a ticket is $495.

  • What is the cheapest month to fly from New Hampshire to Colorado?

    The cheapest month for flights from New Hampshire to Colorado is March, when tickets cost $406 (return) on average. On the other hand, the most expensive months are April and December, when the average cost of round-trip tickets is $527 and $486 respectively.

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

    To get a below average price on the flight from New Hampshire to Colorado, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

  • How long is the flight to Colorado?

    An average nonstop flight from New Hampshire to Colorado takes 9h 45m, covering a distance of 1872 miles. The shortest route is Portland (PWM) to Denver (DEN) with an average flight time of 4h 25m.

  • What are the most popular destinations in Colorado?

    Based on KAYAK flight searches, the most popular destination is Denver (90% of total searches to Colorado). The next most popular destinations are Grand Junction (3%) and Colorado Springs (3%). Searches for flights to Aspen (3%) and to Montrose (1%) are also popular.

Reviews of the top 3 airlines serving from New Hampshire to Colorado

 
Need help choosing which airline to fly with from New Hampshire to Colorado? 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
8.0Comfort
7.6Entertainment
8.2Boarding
7.0Food
8.6Crew
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!

Very rough getting into denver. my kid threw up it was so rough.

Why wasn't this flight departure scheduled eith another crew so that it could leave on time? When we arrived in Denver we had so little time between flights we had run to the connecting flight. We should received some credit for the inconvenience.

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

Flight attendant moved my bag without notifying me and was rude to me when I asked him about it. There was no reason to move it.

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

Food choices were very limited. Taste of the dishes was average.

I liked all the informational texts. I always knew where to go and when .

Received an email the night before showing that there would be seatback entertainment on our flight. We get on and there was no seatback entertainment. And then it was a scramble to try to set up the iPads for the kids before takeoff so they could watch something for the four hour flight.

The reason I don’t fly United. No in seat entertainment for a long flight and inconsistent WiFi and entertainment available from my device.

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.

The flight was fine but the 8 hour delay in Chicago was awful - 5 gate changes and repeated delays without an explanation. No vouchers. Nothing.

They are still charging me after taking 466 and 833 for round trip from AR to to Bradley airport from 19 to 21. Then poor experience. Am hurt and I will say it on social media. Please stay away from this airline. I see in my bank account they are still taking 644. Am trying to stop it. I used to fly United airlines and I suggest that if you don't want extra charges and good service you go back there. American airlines delayed my flight again and I was late for my meeting, no recompensation but charging me over and over.

Pretty bad gate mgmt upon arrival. No open gates and we had to wait at midnight. Shouldn’t be a surprise that an aircraft is coming in.

Book cheap flights from New Hampshire to Colorado

Recent round-trip flight deals

9/5Fri
1 stopFrontier
12h 26mBOS-DEN
9/6Sat
1 stopFrontier
6h 59mDEN-BOS
$161
8/14Thu
1 stopFrontier
8h 20mBOS-DEN
8/23Sat
1 stopFrontier
8h 40mDEN-BOS
$166
7/21Mon
nonstopDelta
4h 39mBOS-DEN
7/23Wed
nonstopDelta
4h 01mDEN-BOS
$217
9/17Wed
nonstopDelta
4h 30mBOS-DEN
9/23Tue
nonstopDelta
4h 06mDEN-BOS
$227
8/22Fri
nonstopSouthwest
4h 35mBOS-DEN
8/26Tue
2 stopsSouthwest
7h 00mDEN-BOS
$232
9/4Thu
1 stopAmerican Airlines
7h 41mBOS-ASE
9/9Tue
1 stopAmerican Airlines
8h 26mASE-BOS
$253
9/4Thu
1 stopAmerican Airlines
7h 41mBOS-ASE
9/9Tue
2 stopsAmerican Airlines
7h 55mASE-BOS
$258
8/13Wed
1 stopSouthwest
7h 15mBOS-COS
8/19Tue
1 stopSouthwest
6h 35mCOS-BOS
$277
8/14Thu
1 stopUnited Airlines
8h 26mPWM-DEN
8/16Sat
nonstopUnited Airlines
3h 59mDEN-PWM
$279
9/4Thu
1 stopUnited Airlines
6h 14mBOS-ASE
9/11Thu
1 stopUnited Airlines
7h 06mASE-BOS
$293

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Recent one-way flight deals

7/12Sat
1 stopFrontier
11h 01mBOS-DEN
$74
7/31Thu
1 stopFrontier
8h 20mBOS-DEN
$82
8/11Mon
1 stop
13h 58mBOS-DEN
$98
8/11Mon
1 stop
13h 58mBOS-DEN
$99
8/12Tue
1 stopUnited Airlines
7h 43mBOS-DEN
$119
7/23Wed
1 stopAmerican Airlines
8h 18mBOS-DEN
$120
10/25Sat
2 stopsAmerican Airlines
14h 04mBOS-MTJ
$122
8/23Sat
2 stopsSouthwest
8h 35mBOS-DEN
$124
7/25Fri
nonstopUnited Airlines
4h 34mBOS-DEN
$128
9/12Fri
2 stopsSouthwest
8h 30mBOS-DEN
$134

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Last minute flights from New Hampshire to Colorado

Last minute flight, train and bus deals

7/3Thu
multi-stopFrontier
8h 29mBOS-DEN
7/16Wed
multi-stopFrontier
6h 29mDEN-BOS
$209
7/3Thu
multi-stopFrontier
8h 29mBOS-DEN
7/9Wed
multi-stopFrontier
6h 29mDEN-BOS
$216
7/5Sat
nonstopDelta
4h 30mBOS-DEN
7/7Mon
nonstopDelta
4h 01mDEN-BOS
$377
7/3Thu
nonstopDelta
4h 30mBOS-DEN
7/13Sun
nonstopDelta
4h 01mDEN-BOS
$380
7/1Tue
multi-stopAmerican Airlines
8h 53mBOS-DEN
7/15Tue
multi-stopAmerican Airlines
6h 59mDEN-BOS
$400
7/3Thu
multi-stopSouthwest
8h 10mBOS-DEN
7/16Wed
multi-stopSouthwest
5h 50mDEN-BOS
$405
7/4Fri
multi-stopAmerican Airlines
7h 20mBOS-COS
7/12Sat
multi-stopAmerican Airlines
8h 34mCOS-BOS
$415
7/2Wed
multi-stopSouthwest
7h 25mBOS-DEN
7/8Tue
nonstopSouthwest
4h 05mDEN-BOS
$425
7/4Fri
multi-stopUnited Airlines
11h 57mBOS-COS
7/12Sat
multi-stopUnited Airlines
8h 17mCOS-BOS
$455
7/2Wed
nonstopUnited Airlines
4h 34mBOS-DEN
7/6Sun
multi-stopUnited Airlines
8h 32mDEN-BOS
$482

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Everything you need to know for your flight to Colorado

Cabin class types available on flights to New Hampshire

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

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