$91 Find Cheap Flights from Colorado to New Hampshire

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Low seasonJanuary
High seasonOctober
Cheapest flight$91
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Denver to Boston

FAQs for booking flights from Colorado to New Hampshire

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

    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 New Hampshire.

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

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

    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 New Hampshire 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 New Hampshire?

    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 New Hampshire 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 New Hampshire?

    Based on KAYAK data, the cheapest day to fly to New Hampshire is Wednesday where round-trip tickets can be as cheap as $297. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $383 on average.

  • What is the cheapest time of day to fly to New Hampshire?

    The cheapest time of day to fly to New Hampshire is generally at night, when round-trip flights cost $271 on average. Morning departures are around 3% more expensive than evening flights, on average. The most expensive time of day to fly to New Hampshire is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $407.

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

    The cheapest month for flights from Colorado to New Hampshire is August, when tickets cost $371 (return) on average. On the other hand, the most expensive months are December and March, when the average cost of round-trip tickets is $551 and $546 respectively.

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

    To get a below average price on the flight from Colorado to New Hampshire, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

  • How long is the flight to New Hampshire?

    An average nonstop flight from Colorado to New Hampshire takes 7h 49m, covering a distance of 1854 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 New Hampshire?

    Based on KAYAK flight searches, the most popular destination is Boston (71% of total searches to New Hampshire). The next most popular destinations are Portland (26%) and Manchester (2%). Searches for flights to Worcester (0%) and to Lebanon (0%) are also popular.

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

 
Need help choosing which airline to fly with from Colorado to New Hampshire? 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 4244 reviews
8.6Crew
8.1Boarding
7.6Entertainment
8.0Comfort
7.0Food
Airline reviews

The Southwest employees (all two of them) were very nice and cheerful despite the fact the line to self-check a bag (simply drop it off) was hundreds of people long. Thank God I arrived early to the airport because I stood in this line for at least an hour. Once on the flight that had been delayed by an hour, we had no Wi-Fi and thus no entertainment. Finally, I hope the investor strong arm tactics against Southwest pay off in a short-term windfall to your C-Suite because the rest of you are screwed. I have been a faithful Southwest customer for 15 years due to everything you just got rid of. I'm flying to Idaho and Washington in October, both places I used to simply book with Southwest without a second thought now with Frontier (Washington) and United (Idaho) because they offer everything the "new" Southwest does but cheaper and at better times, destinations, etc. This really makes me sad...

4.0 OkayGreg, Jul 2025PDX - DEN
Read more Southwest reviews

The Southwest employees (all two of them) were very nice and cheerful despite the fact the line to self-check a bag (simply drop it off) was hundreds of people long. Thank God I arrived early to the airport because I stood in this line for at least an hour. Once on the flight that had been delayed by an hour, we had no Wi-Fi and thus no entertainment. Finally, I hope the investor strong arm tactics against Southwest pay off in a short-term windfall to your C-Suite because the rest of you are screwed. I have been a faithful Southwest customer for 15 years due to everything you just got rid of. I'm flying to Idaho and Washington in October, both places I used to simply book with Southwest without a second thought now with Frontier (Washington) and United (Idaho) because they offer everything the "new" Southwest does but cheaper and at better times, destinations, etc. This really makes me sad...

It was okay. The plane was delayed from earlier in the day, but they kept updating the departure time, sometimes later, sometimes earlier. That was stressful. Once we finally got on and took off, it was fine. I was supposed to have a connection in Chicago to Los Angeles, and the time for so late I was rebooked to arrive in LA 3 hours late. The departure time to Chicago later became early enough to have taken my original connection and arrive earlier but that wasn't an option.

It was one and half hour late... Not sure if any other experience matters.

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.

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

Overall fine, but the delay was annoying and the reasons for the delay were not communicated. The crew on board were phenomenal!

Flight delays numerous times. Everytime we would get close to boarding it would be delayed again. Strung along the entire time.

After a two hour delay, my flight was CANCELLED! No pilot available. Such BS.

Overall very good, only complaint I have is the crew from CLT to SAT could have collected trash sooner.

The AA app really sucks ... Every flight & connecting flights were delayed over 30 mins. One connecting flight on American Eagle said it was delayed in its arrival ... when it was actually parked across from the gate for over 1 hr before they pulled it to the gate. Seats in the economy/ main cabin are packed together like sardines ... no leg room.

Initial flight was cancelled at the time of arrival to the airport, flight alternative requires switching from direct to flight with a layover, and the plane felt like it would split apart, it was so rattle-y.

Amazing food, great staff, with one noticable detail missing ...but no seat entertainment in any of aircraft ...I am not a fan

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!

Book cheap flights from Colorado to New Hampshire

Recent round-trip flight deals

9/21Sun
1 stopFrontier
6h 59mDEN-BOS
9/29Mon
1 stopFrontier
10h 31mBOS-DEN
$189
8/2Sat
1 stopFrontier
6h 29mDEN-BOS
8/7Thu
1 stopFrontier
8h 20mBOS-DEN
$194
8/21Thu
nonstopJetBlue
3h 56mDEN-BOS
8/22Fri
nonstopJetBlue
4h 27mBOS-DEN
$211
8/26Tue
nonstopJetBlue
3h 56mDEN-BOS
9/1Mon
nonstopJetBlue
4h 27mBOS-DEN
$217
8/23Sat
2 stopsSouthwest
7h 55mDEN-BOS
8/26Tue
nonstopSouthwest
4h 35mBOS-DEN
$232
8/11Mon
1 stopSouthwest
7h 05mDEN-BOS
8/19Tue
1 stopSouthwest
7h 35mBOS-DEN
$236
10/22Wed
2 stopsAmerican Airlines
12h 18mMTJ-BOS
10/28Tue
1 stopAmerican Airlines
9h 29mBOS-MTJ
$238
7/29Tue
1 stopAmerican Airlines
6h 48mCOS-BOS
8/6Wed
2 stopsAmerican Airlines
9h 50mBOS-COS
$242
10/17Fri
1 stopUnited Airlines
8h 03mDEN-PWM
10/22Wed
nonstopUnited Airlines
4h 26mPWM-DEN
$304
10/25Sat
nonstopUnited Airlines
3h 56mDEN-PWM
10/29Wed
nonstopUnited Airlines
5h 03mPWM-DEN
$349

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Recent one-way flight deals

10/18Sat
1 stopFrontier
7h 56mDEN-BOS
$91
7/19Sat
1 stopFrontier
6h 29mDEN-BOS
$93
8/27Wed
nonstopJetBlue
4h 06mDEN-BOS
$108
10/19Sun
nonstopJetBlue
3h 50mDEN-BOS
$114
8/27Wed
1 stopSouthwest
8h 20mDEN-BOS
$118
8/4Mon
1 stopSouthwest
7h 40mCOS-BOS
$119
8/8Fri
1 stopAmerican Airlines
8h 32mDEN-BOS
$119
10/23Thu
2 stopsAmerican Airlines
9h 29mMTJ-BOS
$122
11/21Fri
1 stopUnited Airlines
5h 37mDEN-BOS
$139
8/15Fri
1 stopUnited Airlines
9h 14mMTJ-BOS
$157

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Last minute flights from Colorado to New Hampshire

Last minute flight, train and bus deals

7/19Sat
multi-stopFrontier
6h 29mDEN-BOS
7/26Sat
multi-stopFrontier
13h 17mBOS-DEN
$251
7/19Sat
multi-stopFrontier
17h 02mDEN-BOS
7/25Fri
multi-stopFrontier
19h 56mBOS-DEN
$305
7/15Tue
nonstopJetBlue
3h 56mDEN-BOS
7/29Tue
nonstopJetBlue
4h 28mBOS-DEN
$335
7/19Sat
nonstopJetBlue
3h 56mDEN-BOS
7/26Sat
multi-stopJetBlue
7h 10mBOS-DEN
$352
7/18Fri
multi-stopAmerican Airlines
7h 24mDEN-BOS
7/22Tue
multi-stopAmerican Airlines
8h 47mBOS-DEN
$397
7/16Wed
multi-stopSouthwest
7h 35mDEN-BOS
7/28Mon
multi-stopSouthwest
6h 45mBOS-DEN
$420
7/18Fri
multi-stopSouthwest
8h 15mDEN-BOS
7/22Tue
multi-stopSouthwest
7h 50mBOS-DEN
$427
7/19Sat
nonstopUnited Airlines
3h 59mDEN-PWM
8/7Thu
multi-stopUnited Airlines
9h 07mPWM-DEN
$464
7/19Sat
multi-stopAmerican Airlines
8h 38mMTJ-BOS
7/23Wed
multi-stopAmerican Airlines
7h 46mBOS-MTJ
$501
7/19Sat
nonstopUnited Airlines
3h 59mDEN-PWM
8/5Tue
multi-stopUnited Airlines
7h 12mPWM-DEN
$513

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Everything you need to know for your flight to New Hampshire

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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