Cheap flights from Maine to Denver from $108

The cheapest month to fly to Denver from Maine is in February. Flight prices, which tend to average around $374, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in February, then you should wait until October to fly from Maine, when ticket prices are also cheap, with an average price of $399.

The cheapest day to depart on your flight to Denver is on a Friday when prices can be found for as low as $497. 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 $736.

The cheapest time of day to fly to Denver is in the afternoon when flights can be purchased for as low as $550. Flights in the morning are often more expensive with an average ticket price of $713.

Fly from Portland to Denver Intl for the best Maine - Denver Intl flight prices

You are more likely to see cheaper flights to Denver from Maine when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $448 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from Maine for as low as $382 on momondo.

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

Delta, United Airlines, and Southwest are the most popular carriers operating from Maine to Denver Intl

United Airlines, American Airlines and Southwest are the top three most popular airlines that fly to Denver from Maine according to our data. United Airlines is the first choice among our users, with 53% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 4 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.

88 flights are operational weekly from Maine to Denver as of April 2026. The most popular departure day for this route is Fri, with 18% of flights per week taking off on this day.

Flight times vary depending on what airport in Maine you fly out of and what airport in Denver you fly into. For example, flying from Portland to Denver takes 4h 37m on average. On the other hand, flying from Bangor to Denver takes 4h 50m 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.