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Book flights to Boulder

Boulder, situated at the foot of the Flatirons mountains in Colorado, is a city known for its outdoor activities, craft breweries, and university atmosphere. The city is served by multiple daily flights to Denver International Airport (DEN) which is approximately 48 km away. The best time to visit Boulder depends on what you're looking for. For outdoor enthusiasts, summer offers warm weather for hiking, biking, and climbing. However, summer is also the busiest and most expensive time to visit. Winter offers opportunities for skiing and snowboarding in the nearby mountains while spring and fall provide mild temperatures and beautiful scenery, with fewer crowds than summer.

Your journey to Boulder is just a few clicks away with Alternative Airlines. Flights to Boulder are readily available at Alternative Airlines - this is because we ticket over 600 airlines and also offer more than 40 different ways to pay for your flights. Use our search form at the top of the page to begin your search for flights to Boulder today.

Airports near Boulder

You have choices when it comes to reaching Boulder. Here is a selection of 4 airports you can fly to when travelling to Boulder.

Denver International Airport

Located approximately 45 miles southeast of Boulder, Denver International Airport is the closest major international airport serving the region. It offers a wide range of domestic and international flights.


Colorado Springs Airport

Situated around 100 miles south of Boulder, Colorado Springs Airport is another option for travellers. While it is a smaller airport, it still offers commercial passenger flights to various destinations within the United States.


Cheyenne Regional Airport

Located approximately 90 miles north of Boulder, Cheyenne Regional Airport is a regional airport that offers limited commercial passenger flights. It may be an option for travellers who prefer a smaller airport experience.


Salt Lake City International Airport

If none of the above airports meet your needs, you may consider flying into a larger airport such as Salt Lake City International Airport or Albuquerque International Sunport (ABQ) and then connecting to a more local airport near Boulder, such as Rocky Mountain Metropolitan Airport (BJC) or Centennial Airport (APA). These connecting flights would allow you to reach Boulder with ease.

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Buy your flights to Boulder and pay later

Rather than paying for your Boulder flights upfront, you can instead use Buy Now Pay Later (BNPL) solutions to help you split the cost of your flights into more manageable instalments.

You'll get greater flexibility when planning the budget for your trip to Boulder! You won't need to pay any interest, however, this will depend on the specific terms set by the lending provider.

Enjoy hassle-free travel today when you book your flights to Boulder and pay later at Alternative Airlines.

Things to do in Boulder

In a city full of many sights to see, we've picked out our top 3 must-sees:

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These iconic rock formations are one of the most recognizable landmarks in Boulder. The Flatirons offer a stunning backdrop to the city and provide a playground for outdoor enthusiasts. Hiking, rock climbing, and wildlife viewing are just a few of the activities you can enjoy here. The breathtaking views and natural beauty of the Flatirons make them a must-visit attraction for any Boulder itinerary.

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Pearl Street Mall

This vibrant, pedestrian-friendly mall is the heart of downtown Boulder. Lined with a variety of shops, restaurants, and art galleries, Pearl Street Mall offers something for everyone. Street performers and musicians add to the lively atmosphere, making it a great place to stroll, shop, and soak up the local culture.

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Boulder Dushanbe Teahouse

A gift from Boulder's sister city, Dushanbe in Tajikistan, this ornate teahouse is a testament to traditional Persian architecture and craftsmanship. The teahouse serves a variety of teas from around the world, along with a menu of international cuisine. The tranquil setting and beautiful surroundings make it a unique and memorable place to visit.