Cheap flights from New Hampshire to Denver from $118

The cheapest month to fly to Denver from New Hampshire is in September. Flight prices, which tend to average around $430, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in September, then you should wait until February to fly from New Hampshire, when ticket prices are also cheap, with an average price of $440.

The cheapest day to depart on your flight to Denver is on a Wednesday when prices can be found for as low as $380. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Sunday, with ticket prices averaging around $492.

The cheapest time of day to fly to Denver is in the evening when flights can be purchased for as low as $350. Flights in the afternoon are often more expensive with an average ticket price of $431.

You are more likely to see cheaper flights to Denver from New Hampshire when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $353 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from New Hampshire for as low as $300 on momondo.

American Airlines, Southwest, and United Airlines are the most popular carriers operating from New Hampshire to Denver Intl

Southwest, American Airlines and United Airlines are the top three most popular airlines that fly to Denver from New Hampshire according to our data. Southwest is the first choice among our users, with 63% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 3 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.

The number of flights available between New Hampshire and Denver is 118 per week as of August 2026. The most frequent departure day is Wed, with 18% of weekly flights leaving on this day.

Flight times vary depending on what airport in New Hampshire you fly out of and what airport in Denver you fly into. For example, flying from Manchester to Denver takes 6h 05m on average. On the other hand, flying from Lebanon to Denver takes 6h 34m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.