$24 Car Rental St. Mary, MT

Search and Compare from Car Companies in St. Mary

Photo by Chelsea Jennings

Featured car rental suppliers

Compare from agencies

car suppliers logo

  • protection illustration

    Change your mind

    Penalty-free cancellation on many/select car rentals
  • trophy illustration

    Treat yourself

    One Key members save 10% or more on over 1 million car rentals
  • package illustration

    Shop smart

    Compare car suppliers and package your flight, hotel, and car to save

Top Car Deals in St. Mary

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

Don't see what you're looking for?

See all car rentals in St. Mary
View all cars
Lowest prices found within the past 2 days. Prices and availability subject to change. Additional terms may apply.

Frequently asked questions

How much is a rental car per day in St. Mary?
Get bang for your buck in St. Mary, with car rental prices within the past seven days starting from as little as $24 per day.
What happens if I need to cancel my St. Mary car reservation?
No problems! If you can cancel your reservation at least six hours ahead of pickup, you're likely to qualify for all of your money back. It's a good idea to read your rental policy as there are some exceptions. Head to our Customer Service Portal if you still have questions.
Where can I go on a road trip from St. Mary?
There's loads to do in St. Mary, but venture farther afield and you'll find more sightseeing magic. Grab a set of wheels and you can roam around the surrounding region at your leisure. Add these awesome destinations to your to-do list:

  • Make your way to Whitefish for an excellent sightseeing experience. Around 50 miles from St. Mary, it's home to numerous inspiring sights such as Whitefish Mountain Ski Resort.
  • Situated 45 miles away, Columbia Falls is also a favorite with travelers. Make sure you get to Meadow Lake Golf Course while you're in town. It's one of the reasons people love staying a while in this buzzing city.
  • Head to Manito Park to discover some local nature. Take a picnic to enjoy or just relax in the fresh air. From St. Mary, it's roughly 200 miles away.

How do I find the best car rental deals in St. Mary with Expedia?
Whatever kind of ride you want, Expedia will help you score the best deal. Simply compare offers from leading rental providers and book the option that's right for you. Love to drive away with even bigger savings? Combine your St. Mary car rental with hotel or flight bookings.
How old do you have to be to rent a car in St. Mary?
Drivers need to be at least 21. But there are a few age-related rules you should keep in mind before booking your wheels in St. Mary. If you're a young motorist, most rental companies will charge an extra daily fee and limit the kinds of vehicles you're able to rent. This size of the surcharge, and which age range it applies to, varies between suppliers. Take your time to compare the requirements.
What do you need to rent a car in St. Mary?
Renting a car in St. Mary is a breeze. Normally, all you'll need is a current driver's license and a credit card. After selecting the perfect set of wheels, read your policy to ensure there are no extra requirements before pickup.
What is the cheapest car rental in St. Mary?
Based on prices within the past seven days, you could've hopped into the driver's seat of a rental car for just $24 a day. The second lowest daily rate on offer in St. Mary was $30. 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 St. Mary?
You can, and the awesome news is providers often offer lower prices the longer your rental term. Discover our long-term car rental deals in St. Mary and drive away with an impressive bargain.
Where can I find a St. Mary car rental if I am younger than 25?
Age policies are different between rental suppliers, so you'll have to do a little research. Found a St. Mary supplier that does rent to drivers under 25 years of age? Terrific news! Just keep in mind that some companies charge extra fees to drivers between the ages of 21 and 24. The fine print of each rental car you're looking at should have all the details you need.
What insurance should I choose for my car rental in St. Mary?
We recommend purchasing collision damage protection while reserving your St. Mary rental car with Expedia. This covers your ride against collision damage, theft and vandalism throughout your road trip. Offering up to $35,000 in primary coverage and 24/7 emergency support, you can take the wheel knowing you're covered for many mishaps. It's easy to opt in to this insurance while booking your rental car.

Car Rental Information

 
Popular car types
SUV, Full Size, Economy
 
Car suppliers available
 
Our best deal of the day
$24
 
Our second best deal of the day
$30
 
Our third best deal of the day
$60
 
From the airport to your hotel
Airport Transportation
 
From popular domestic and international airports
Airport Car Rentals

Finding the cheapest car rentals in St. Mary

Using our Search Wizard

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

Renting a car in St. Mary

Pay at pickup is available, so you don’t have to worry about spending your money until you arrive at your vehicle in St. Mary. 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 St. Mary

Prices are subject to seasonal change depending on when you decide to arrange your car rental but right now you can book from $24.

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.

Explore a world of travel with Expedia