Grassy Key Cheap Car Rentals & Car Hire Deals

Compare rent a car rates in Grassy Key from popular car rental companies

I have a discount code

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, activities and holiday rentals. Sign up.Opens in a new window

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

Explore Grassy Key with Cheap Car Rentals and Car Hire Deals

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

Economy

Chevrolet Spark or similar
  • 4 people
Grassy Key, Florida, USA
Chevrolet Spark
Economy Chevrolet Spark

Compact

Ford Focus or similar
  • 4 people
Grassy Key, Florida, USA
Ford Focus
Compact Ford Focus

Midsize

Toyota Corolla or similar
  • 5 people
Grassy Key, Florida, USA
Toyota Corolla
Midsize Toyota Corolla

SUV

Jeep Compass or similar
  • 5 people
Grassy Key, Florida, USA
Jeep Compass
SUV Jeep Compass

Don't see what you're looking for?

See all car hire in Grassy Key
View all cars

Frequently asked questions

Can I rent a car from Marathon, FL (MTH-Florida Keys Marathon)?
With Budget and Avis within a quick commute of Marathon, FL (MTH-Florida Keys Marathon), getting off the plane and out onto the road is quick and easy.
What happens if I need to cancel my Grassy Key car reservation?
No need to stress. You should receive a complete refund if you let us know at least six hours before picking up the car. Your confirmation contains details about this, and so does our Customer Service Portal. Not all prepaid reservations will receive a refund though, so it's a good idea to go over your car's cancellation policy.
How do I find the best car rental deals in Grassy Key with Expedia?
Expedia makes it quick and easy to compare costs, offers and rental companies, and to check customer ratings. Combine your Grassy Key car rental with flight or hotel bookings to make even bigger savings.
How old do you have to be to rent a car in Grassy Key?
In Grassy Key, the requirement is 21 years and over. Most outlets will charge additional fees for young drivers, which can vary based on the rental location. Rental policies for young drivers may include restrictions for certain vehicles, such as luxury cars, and require inclusive insurance to be taken out. It's a good idea to check the fine print before booking your wheels.
What do you need to rent a car in Grassy Key?
Two things — a valid driver's license and a credit card in the same name. Most car rental companies will offer you insurance, which is optional. But you may have to provide proof of other coverage if you opt out. Be sure to check with your rental provider to avoid any issues.
Can I rent a car for a month or longer in Grassy Key?
Expedia makes it a breeze to book a cheap long-term rental in Grassy Key. Simply click on our long-term car rental deals page, enter your preferences and compare your possibilities.
Where can I find a Grassy Key car rental if I am younger than 25?
Age policies differ between rental companies, so you'll have to do a bit of research. Managed to find a Grassy Key supplier that does rent to drivers under 25? Terrific! Just take note that extra fees often apply to drivers aged between 21 and 24. The terms and conditions of each rental car you're interested in should have all the information you need.