Car Rental Boulder, MT

Search and Compare from Car Companies in Boulder

I have a discount code

Featured car rental suppliers

Compare from agencies

car suppliers logo

Change your mind: penalty-free cancellation on many/select car rentals

Treat yourself: One Key members save 10% or more on over 1 million car rentals

Shop Smart: Compare car suppliers and package your flight, hotel, and car to save

Top Car Deals in Boulder

* Price found within the past 6 days. Click for updated prices.

Econômico

Chevrolet Spark or similar
  • 4 people
Paraty, Rio de Janeiro, BRA
Chevrolet Spark
Econômico Chevrolet Spark

Compacto

Ford Focus or similar
  • 4 people
Paraty, Rio de Janeiro, BRA
Ford Focus
Compacto Ford Focus

Médio

Toyota Corolla or similar
  • 5 people
Paraty, Rio de Janeiro, BRA
Toyota Corolla
Médio Toyota Corolla

Utilitário esportivo

Jeep Compass or similar
  • 5 people
Paraty, Rio de Janeiro, BRA
Jeep Compass
Utilitário esportivo Jeep Compass

Don't see what you're looking for?

See all car rentals in Boulder
View all cars

Frequently asked questions

How much is a rental car per day in Boulder?
The most affordable daily rate in Boulder was based on prices within the last seven days. Browse our terrific range of options, from budget vehicles to luxurious rides.
Can I rent a car from Helena Regional Airport (HLN)?
Helena Regional Airport (HLN) has lots of options just a short commute away. Check out the offers from Enterprise, Avis, Alamo, Budget or Hertz.
What happens if I need to cancel my Boulder car reservation?
Our Customer Service Portal has details about this. In most situations, total refunds are provided if a prepaid reservation is canceled a minimum of six hours ahead of the pickup time. Be sure to read the car rental agreement to double-check if there are any exclusions.
Where can I go on a road trip from Boulder?
There's lots on offer in Boulder, but venture farther afield and you'll find even more magic. Rent a set of wheels and you can roam around the surrounding area at your own pace. Add these fantastic drives to your travel plan:

  • Missoula is approximately 100 miles from Boulder. Renowned tourist attractions like Washington-Grizzly Stadium deserve to be high on your list here.
  • Located 95 miles away, Great Falls is also popular with travelers. Set aside time to check out Holiday Village Mall while you're here. It's one of the reasons people love staying a while in this colorful city.
  • Find your way to Old Faithful to feel grounded in nature. Pack a picnic to enjoy or just sit and unwind. From Boulder, it's around 140 miles away.

How do I find the best car rental deals in Boulder with Expedia?
Finding an amazing deal on your Boulder rental car is a piece of cake with Expedia. Choose your preferred ride, add some details and compare prices from top brands. Why not add flights and hotels to your booking? You'll score terrific discounts when you create a vacation package.
How old do you have to be to rent a car in Boulder?
At least 21. But there are several age-related restrictions to bear in mind before you reserve your Boulder wheels. If you're a younger driver, rental providers will likely charge an extra fee and limit the kinds of vehicles you can rent. The exact surcharge, and which ages it applies to, varies between outlets. Take a moment to compare the rules.
What do you need to rent a car in Boulder?
Two things — your driver's license and a credit card in your name. Most car rental companies will offer you insurance, which is optional. But you may be asked to provide proof of alternative coverage if you opt out. Check your policy terms and conditions to avoid any hassles.
What is the cheapest car rental in Boulder?
Based on prices within the past seven days, you could've hopped behind the wheel of your own rental car for just a day. The second lowest daily rate offered in Boulder was . These rates were available on Expedia, with a rental starting date within the next year. Prices and availability are subject to change and additional terms apply.
Can I rent a car for a month or longer in Boulder?
Yes, and you'll find your perfect wheels among our long-term car rental deals. Simply enter your trip dates and we'll list amazing offers from a range of trustworthy companies.
Where can I find a Boulder car rental if I am younger than 25?
This will depend on the rental car companies located in Boulder. They often have different policies when it comes to minimum ages. If you've found an outlet that does cater to drivers under 25 years of age, bear in mind that additional fees may apply. Conduct some research into what those charges could be before picking up the keys to your vehicle.
What insurance should I choose for my car rental in Boulder?
A comprehensive insurance plan is a fantastic choice for your upcoming Boulder trip. That's why we suggest purchasing collision protection while organizing your rental car with Expedia. This insures your vehicle against theft, vandalism and collision damage. Some destinations may need you to have a minimum level of liability insurance. This may already be included in your rental cost or your personal auto insurance, so check what you're covered for and whether you need it.

Car Rental Information

 
Popular car types
SUV, Full Size, Economy
 
Car suppliers available
 
Our best deal of the day
 
Our second best deal of the day
 
Our third best deal of the day
 
From the airport to your hotel
Airport Transportation
 
From popular domestic and international airports
Airport Car Rentals

Finding the cheapest car rentals in Boulder

Using our Search Wizard

If the deals that are available on our page do not suit your needs, then enter Boulder into the search wizard at the top of the page. We will compare all the best deals available for your car rental in Boulder and provide you with a list of the cheapest options, with no added fees.

Renting a car in Boulder

Pay at pickup is available, so you don’t have to worry about spending your money until you arrive at your vehicle in Boulder. We partner with reliable partners that guarantee an enjoyable experience for solo travelers, couples, and families. Package your car with a flight or hotel to unlock even more savings from Expedia.

Expected prices in Boulder

Prices are subject to seasonal change depending on when you decide to arrange your car rental but right now you can book .

Flexibility & Cancellation

Most car suppliers offer penalty-free cancellations, so you don’t have to worry about losing money if your plans change. To cancel your booking log into your account through the Trips portal. Click manage booking and cancel this car. If you needed to alter your booking, then you can create a new one once you have canceled.

We all love being rewarded

One Key members save 10% or more on select hotels, cars, activities and vacation rentals. Not only that, earn OneKeyCash for every dollar spent on eligible hotels, vacation rentals, flights, car rentals, and more when you book across our family of brands: Expedia, Hotels.com and VRBO. Learn more and join today.

Car classes available from Expedia in 2025

The classes of vehicles available will change depending on your chosen location.