$124 Find Cheap Flights from Denver to New Hampshire - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to New Hampshire departing on 8/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Denver to New Hampshire

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Boston
Boston1 stop$240
Lebanon
Lebanon1 stop$830
Portland
Portland1 stop$407
Boston
Boston1 stop$240
Lebanon
Lebanon1 stop$830
Portland
Portland1 stop$407

Book Cheap Denver to New Hampshire Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to New Hampshire that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to New Hampshire

Fri, Aug 14 - Wed, Aug 19
Frontier Logo
6:03 am - 12:01 pm
DEN
-
BOS
27h 58m
1 stop
Frontier Logo
12:45 pm - 10:10 pm
BOS
-
DEN
11h 25m
1 stop
$240Frontier
Fri, Aug 14 - Fri, Aug 21
Frontier Logo
6:03 am - 12:01 pm
DEN
-
BOS
27h 58m
1 stop
Frontier Logo
12:45 pm - 10:10 pm
BOS
-
DEN
11h 25m
1 stop
$240Frontier
Fri, Aug 28 - Fri, Sep 4
Southwest Logo
11:50 am - 10:20 pm
DEN
-
BOS
8h 30m
2 stops
Southwest Logo
5:40 am - 8:00 am
BOS
-
DEN
4h 20mnonstop
$240Southwest
Tue, Sep 1 - Fri, Sep 4
Southwest Logo
11:15 am - 9:20 pm
DEN
-
BOS
8h 05m
2 stops
Southwest Logo
5:50 pm - 10:05 pm
BOS
-
DEN
6h 15m
1 stop
$240Southwest
Tue, Aug 11 - Wed, Aug 12
Multiple Airlines Logo
11:37 pm - 5:30 am
DEN
-
BOS
3h 53mnonstop
Multiple Airlines Logo
8:41 am - 2:19 pm
BOS
-
DEN
7h 38m
1 stop
$240Multiple Airlines
Wed, Aug 12 - Fri, Aug 21
American Airlines Logo
6:15 am - 2:48 pm
DEN
-
BOS
6h 33m
1 stop
American Airlines Logo
1:30 pm - 7:19 pm
BOS
-
DEN
7h 49m
1 stop
$241American Airlines
Wed, Sep 2 - Sun, Sep 6
Multiple Airlines Logo
11:37 pm - 5:30 am
DEN
-
BOS
3h 53mnonstop
Multiple Airlines Logo
9:36 am - 10:05 pm
BOS
-
DEN
14h 29m
1 stop
$241Multiple Airlines
Tue, Aug 11 - Sat, Aug 15
American Airlines Logo
10:43 am - 10:06 pm
DEN
-
BOS
9h 23m
1 stop
American Airlines Logo
7:17 pm - 11:59 pm
BOS
-
DEN
6h 42m
1 stop
$242American Airlines
Thu, Oct 29 - Sun, Nov 1
JetBlue Logo
2:00 pm - 8:15 pm
DEN
-
BOS
4h 15mnonstop
JetBlue Logo
10:22 am - 1:10 pm
BOS
-
DEN
4h 48mnonstop
$244JetBlue
Fri, Aug 28 - Sun, Aug 30
JetBlue Logo
11:37 pm - 5:30 am
DEN
-
BOS
3h 53mnonstop
JetBlue Logo
6:30 am - 9:03 am
BOS
-
DEN
4h 33mnonstop
$244JetBlue
Booking Insights

KAYAK's insights & trends for Denver to New Hampshire flights

Get data-powered insights and trends into flights from Denver to New Hampshire to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Denver to New Hampshire?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Denver to New Hampshire departing in October.

Flight prices are below average for this route right now.

Flights to New Hampshire from Denver usually cost between $444 and $547 in October.
The lowest price found in the past 5 days was $328 on Southwest (Oct 17-Oct 21).

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

The average price for all round-trip flights from Denver to New Hampshire depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to New Hampshire is generally at night, when round-trip flights cost $314 on average. Morning departures are around 21% more expensive than evening flights, on average. The most expensive time of day to fly to New Hampshire is generally in the morning, which is peak travel time and where the average cost of a ticket is $428.

What is the cheapest month to fly from Denver to New Hampshire?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to New Hampshire, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Denver to New Hampshire is January, when tickets cost $407 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $731 and $535 respectively.

What’s the cheapest day of the week to fly from Denver to New Hampshire?

The average price of all round-trip flights from Denver to New Hampshire clicked on KAYAK for each day over the last 12 months.

For Denver to New Hampshire, Wednesday is the cheapest day to fly on average and Monday is the most expensive. Flying from New Hampshire back to Denver, the best deals are generally found on Wednesday, with Sunday being the most expensive.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to New Hampshire, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Denver to New Hampshire, you should book around 3 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low season

January

Cheapest flight

$124
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly with an average 18% increase in price.
Flight from Denver to Boston

FAQs - booking New Hampshire flights

  • How does KAYAK find such low prices on flights from Denver 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 Denver to New Hampshire.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Denver 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 Denver 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 Denver 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 Denver 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 Denver to New Hampshire up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to New Hampshire

  • Looking for a cheap flight? 25% of our users found tickets from Denver to the following destinations at these prices or less: Boston $182 one-way - $296 round-trip

Reviews of the top airlines flying from Denver to New Hampshire

 
See real verified KAYAK customer reviews for airlines flying from Denver to New Hampshire. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Denver 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 4228 reviews
8.6Crew
7.0Food
8.1Boarding
7.5Entertainment
8.0Comfort
Airline reviews

Poor customer service, no accommodation for passengers when the flight was delayed over 5 hours.

2.0 MediocreChristopher, Jul 2026
DEN - SJC
Read more Southwest reviews

Poor customer service, no accommodation for passengers when the flight was delayed over 5 hours.

The flight was late. The crew was rude. There was no food. Cramped and uncomfortable. Nothing about this flight was good.

It was great. The gate staff were very helpful in Portland when my son forgot his rolling bag and had to go back to get it just in time to make it on the plane. We really appreciate that. Great job!

This leg was much better, but we did have to have a 3 hour lay o er after coming from a very exhausting hiccup with our flight from BNA to Den

My flight from Denver to Minneapolis was excellent. My flight from Minneapolis to Denver was one of the worst I flights I have ever experienced. I had a window seat, the gentleman in the middle seat was morbidly obese and SW should have made him purchase two seats. His elbow dug into my arm most of the way even after I asked to please be careful. I was literally squashed between the him and the window with no wiggle room. The plane was full so it was not possible to ask for a different seat. I realize I should have complained to the flight attendant but I didn't feel anything could be done to rectify the situation. I fly SW often, I will continue to do so as this was my first negative experience.

Everything went smoothly and we even arrived a little bit early.

Connecting flight is on time and boarding was a breeze!

WiFi did not work. For as outrageous as these flights cost, when they’re advertised with certain services/ features they should be in working order

I would have liked to arrive on time - not 5 hours late!

1.5 hour delay, poor service, no compassion from the crew. Terrible experience

The flight attendants were extremely sourly and borderline rude. I did not feel appreciated as an AA customer once.

As we approached Denver, we encountered quite a bit of turbulence. I know this can sometimes be the case as I frequently fly this route but not on American. My gripe: Usually a pilot or co-pilot alerts passengers to the possibility of turbulance ahead of time. This did not occur nor did he communiucate during what was a pretty rough ride.

Terrible. Our luggage was delayed and couldn’t be delivered for several days. We got bad information from the airline agents at baggage claim. We had to pick up our car so we wouldn’t be charged for an extra day. We got lost in the maze of airport parking. The baggage claim agents didn’t offer us any compensation for our extra time and expense. We are tired, hungry and very frustrated.

Mechanical delay and no compensation. Missed connection as a result of their delay. Mediocre performance and service. Horrible airline currently with horrible culture.

Any sort of gluten free snack option would be nice

Crew was late. Baggage was late. 2hs inside the plane waiting fro de-icing and traffic. A 3:30hs flight ended up being almost 6hs inside the airplane.

Timely boarding process, made up for lost time even after a lengthy wait for de-icing

It would have been better if I could have had my flight on time. It was delayed for 5 hours. Caused me to not be able to fulfill my promise to my granddaughters. Other than that it was a good trip.

11h50m total delay. Had to switch to another flight that was still a 7h30m delay.

Delay 14 hours! Missed all connections and had to fly different airline the next day.

Everything you need to know for your flight from Denver to New Hampshire

Information on your arrival and departure airports