Cheap flights from Boston to Denver from $123

The cheapest month to fly to Denver from Boston is in January. Flight prices, which tend to average around $318, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in January, then you should wait until April to fly from Boston, when ticket prices are also cheap, with an average price of $339.

The cheapest day to depart on your flight to Denver is on a Wednesday when prices can be found for as low as $392. 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 $498.

The cheapest time of day to fly to Denver is in the evening when flights can be purchased for as low as $345. Flights in the afternoon are often more expensive with an average ticket price of $454.

Fly from Boston Logan Intl to Denver Intl for the best Boston Logan Intl - Denver Intl flight prices

You are more likely to see cheaper flights to Denver from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $367 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from Boston for as low as $307 on momondo.

There are 4 cabin classes available to choose from on Boston to Denver flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

JetBlue, Delta, and Southwest are the most popular carriers operating from Boston Logan Intl to Denver Intl

United Airlines, JetBlue and Southwest are the top three most popular airlines that fly to Denver from Boston according to our data. United Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 7 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.

Historically, on average around 19% of flights between Boston and Denver have experienced a delay on any given week. The average delay length over the past 12 months has been 154 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

According to our data, Delta have had the least number of delays on this route over the last 12 months; with about 12% of their flights experiencing any sort of delay.

Nashville (BNA) was the most common stop: 20% of momondo users choosing 1-stop flights on this route connected there.

Flights via Atlanta (ATL) offer the lowest average round-trip price of $190.

Flights connecting via New York (JFK) have the shortest average one-way travel time: 6h 54m.

Nashville (BNA) has the shortest average layover time for this route: 0h 53m.

6 flights are operational daily from Boston to Denver as of November 2026. The most popular departure time for this route is 8:00AM, with 70% of flights per day taking off at noon.

As of November 2026, there are 44 flights per week flying from Boston to Denver. The most common day of the week flights depart is Mon, with 27% of flights taking off on this day.