Featured car rental suppliers

Compare from agencies

car supplier logos

Compare car suppliers to unlock big savings, and package your flight, hotel, and car to save even more.

Members save 10% more on select hotels, cars and activities. Sign up.Opens in a new window

Enjoy maximum flexibility with penalty-free cancellation on most car rentals.

Explore Boulder with Cheap Car Rentals and Car Hire Deals

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

Don't see what you're looking for?

See all car hire in Boulder
View all cars

Frequently asked questions

How much is a rental car per day in Boulder?
Find your own path in Boulder, with car rental prices starting at just a day. That’s based on prices found within the past seven days. With rates like this, it’ll be a cinch to find a ride that meets your needs.
Can I rent a car from Helena Regional Airport (HLN)?
You can choose from a fantastic range of car rental outlets not far from the airport. Enterprise, Budget and Hertz are top picks for many travellers. Avis and Alamo are some other reliable options.
What happens if I need to cancel my Boulder car reservation?
When you cancel at least six hours ahead of pickup, many reservations qualify for a total refund. However, not every one is eligible for this, so it’s important to understand the cancellation policy. Check your itinerary for the finer details or go to our Customer Service Portal to find out more.
What types of cars can I rent in Boulder?
If you’ll be visiting bustling cities, it pays to think small — like an economy-sized car. The most popular home in Boulder, they can easily cruise around congested streets, get into narrow parking spaces and deliver excellent mileage. But there’s nothing holding you back from thinking big either! Check out our standard or full-size options if you’d prefer some extra legroom, or take things up a notch with one of our stylish premium rides.
Where can I go on a road trip from Boulder?
Book yourself some wheels, pick up the keys and explore all Boulder has to offer. But with so many places to visit in the surrounding areas, don’t let that be the end of the road! Chart your own course to some of the other interesting places in the region:

  • You’ll feel the spirit of bustling city life as soon as you pull into Missoula. Some 161 kilometres from Boulder, it has loads of exciting spots to visit, like University of Montana.
  • Great Falls, around 153 kilometres away, will also show you a memorable time. Wondering what there is to see? Holiday Village Mall is one of our favourite stops.
  • No visit is complete without spending time at Old Faithful. This gorgeous nature spot is approximately 225 kilometres from Boulder. Relax and breathe in the fresh air!

Why should I rent a Boulder car with Expedia?
With our member discounts, exclusive offers and big range of home companies, finding the best car at the ideal price is easy with Expedia. Compare vehicles from up to suppliers in Boulder. Plus, when you bundle your rental car with your flights and hotels, you’ll make even bigger savings with our holiday packages.
How do I find the best car rental deals in Boulder with Expedia?
Finding an amazing deal on your Boulder rental car is a cinch with Expedia. Choose your preferred ride, add in a few more details and compare prices from big-name brands. Why not add hotels and flights to your booking? You’ll score even more savings when you create a holiday package.
How old do you have to be to rent a car in Boulder?
Generally, the requirement is 21 years and over in Boulder. It’s important to note that most outlets will charge extra fees for young renters. Read the fine print before you book your ride, as different rules may apply between rental car providers. Bear in mind that if you want to rent a luxury vehicle or a larger car like a premium SUV, you may need to be older than 21.
What do you need to rent a car in Boulder?
You’ll need to present your driver’s license and a credit card in your name when you get to the home counter. Prior to the pickup date, check with your selected company whether other documentation is needed. For example, you may also need to show proof of insurance.
Can I rent a car for a month or longer in Boulder?
Whether you plan to hang around Boulder or discover what’s beyond, it’s easy to reserve a long-term holiday home with Expedia. Enter your trip information and pick-up/drop-off locations and we’ll help you find the best long-term car rental deals.
Where can I find a Boulder car rental if I am younger than 25?
Whether or not you can rent a car if you are under 25 in Boulder often depends on the holiday home supplier you select. Some places apply a surcharge for drivers between 21 and 24 years old, but other companies may not have any additional fees for this age bracket. Be sure to read the terms and conditions of your selected car company to avoid extra charges when collecting your car.
Can I drive in Boulder with my current driver's license?
If you don’t possess a driver’s license from the United States, you may be required to organise an International Driving Permit (IDP) in your home country before renting a car. If you find that an IDP is required, be aware that you’ll also have to show your current driver’s license and your passport or other form of ID. Lastly, the credit card you used to rent the car must match the name on your driver’s license and passport in order to finalize your car rental. Other things you should know about renting a car in the U.S. Are:

  • Age restrictions: You’ll need to be 25 in many states in order to rent a car, although in some areas, 21 years and older is allowed. We recommend checking local rules and regulations, as well as with the company you’re renting from before your trip to understand all the terms and conditions.
  • Driving limitations: Be sure to read the fine print before you drive off the lot so you can avoid any unnecessary charges. When renting a car in the United States, it’s usually prohibited to cross country borders into Canada or Mexico, use car ferries or traverse off-road areas with your car rental. Please read the regulations before booking!

Information on Car Rentals

 
Popular Car Rental Types:
Hire a SUV, Economy, Luxury, Full Size
 
Car Rental Suppliers Available:
 
Today's Best Car Rental Offer:
 
Second Best Car Rental Deal:
 
Third Best Car Rental Deal:
 
Airport to hotel transportation:
Airport Transportation