Title: Cheap Car Hire in Grassy Key, USA - Expedia.co.uk [Grassy Key Travel Guide](https://expedia.co.uk/Grassy-Key.dx3000451823)[Hotels in Grassy Key](https://expedia.co.uk/Grassy-Key-Hotels.d3000451823.Travel-Guide-Hotels)[Flights to Grassy Key](https://expedia.co.uk/Cheap-Flights-To-Grassy-Key.d3000451823.Travel-Guide-Flights)[Things to do in Grassy Key](https://expedia.co.uk/Things-To-Do-In-Grassy-Key.d3000451823.Travel-Guide-Activities)[Grassy Key Holidays](https://expedia.co.uk/Grassy-Key.d3000451823.Holidays-City-Breaks) ![](https://images.trvl-media.com/place/2437/83757040-1d80-4589-aea2-a5fe1bb3ba0c.jpg?impolicy=fcrop&w=1200&h=300&q=medium) # Car Rentals in Grassy Key, USA ## Search and Compare from Car Companies in Grassy Key Photo by Monica Ferro ## Featured car rental suppliers Compare from agencies ![car supplier logos](https://forever.travel-assets.com/flex/flexmanager/images/2022/05/16/BEXUK-car-suppliers-logo-desktop.jpg) - ![protection illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__protection.svg) ### Change your mind Penalty-free cancellation on many/select car hire - ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Treat yourself One Key members save 10% or more on over 1 million car hire [Learn about One Key](https://www.expedia.co.uk/welcome-one-key) - ![package illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__package.svg) ### Shop smart Compare car suppliers and package your flight, hotel, and car to save ## Top Rental Car Deals in Grassy Key \* Price found within the past 6 days. Click for updated prices. Mon, 15 Dec - Tue, 16 Dec ### Economy Chevrolet Spark or similar - 4 people - Unlimited mileage ![Thrifty](//mediaim.expedia.com/cars/logos/ZT.png) #### Pick-up location 3900 Northwest 25th Street, Suite 405, Miami, Florida 33142, USA 83.46 mi from Grassy Key city centre ![Chevrolet Spark](//mediaim.expedia.com/cars/45/72c58f0a-a81a-48e3-befa-2ee0943c5166.jpg) #### £30 total found 1 day ago [](https://expedia.co.uk/carsearch?paandi=true&fdrp=1&styp=2&dagv=1&subm=1&olat=25.796980&olon=-80.261980&date1=15/12/2025&date2=16/12/2025&pprfrr=null&tprfrr=30.22&cvrfrr=ZT&ctrfrr=EC&crfrr=pricefeedResponseFlex&SearchType=Place&selCC=[%22economy%22]) Tue, 16 Dec - Wed, 17 Dec ### Special EV Manager s Special or similar - 5 people - Unlimited mileage ![Thrifty](//mediaim.expedia.com/cars/logos/ZT.png) #### Pick-up location 3900 Northwest 25th Street, Suite 405, Miami, Florida 33142, USA 83.46 mi from Grassy Key city centre ![EV Manager s Special](//mediaim.expedia.com/cars/45/79462359-827c-4ecd-ba02-cfa4ecab0a87.jpg) #### £30 total found 1 day ago [](https://expedia.co.uk/carsearch?paandi=true&fdrp=1&styp=2&dagv=1&subm=1&olat=25.796980&olon=-80.261980&date1=16/12/2025&date2=17/12/2025&pprfrr=null&tprfrr=30.05&cvrfrr=ZT&ctrfrr=XX&crfrr=pricefeedResponseFlex&SearchType=Place&selCC=[%22other%22]) Mon, 15 Dec - Tue, 16 Dec ### Compact Nissan Versa Note or similar - 5 people - Unlimited mileage ![Dollar](//mediaim.expedia.com/cars/logos/ZR.png) #### Pick-up location 3900 Northwest 25th Street, Suite 405, Miami, Florida 33142, USA 83.46 mi from Grassy Key city centre ![Nissan Versa Note](//mediaim.expedia.com/cars/43/79fd35f4-a9f4-405e-a7d7-3a501dfc88c1.jpg) #### £30 total found 1 day ago [](https://expedia.co.uk/carsearch?paandi=true&fdrp=1&styp=2&dagv=1&subm=1&olat=25.796980&olon=-80.261980&date1=15/12/2025&date2=16/12/2025&pprfrr=null&tprfrr=30.05&cvrfrr=ZR&ctrfrr=CC&crfrr=pricefeedResponseFlex&SearchType=Place&selCC=[%22compact%22]) Mon, 15 Dec - Tue, 16 Dec ### Standard Chevrolet Cruze or similar - 5 people - Unlimited mileage ![Dollar](//mediaim.expedia.com/cars/logos/ZR.png) #### Pick-up location 3900 Northwest 25th Street, Suite 405, Miami, Florida 33142, USA 83.46 mi from Grassy Key city centre ![Chevrolet Cruze](//mediaim.expedia.com/cars/43/428f5fd5-c16a-45ea-83fa-3c6a0e647b4c.jpg) #### £31 total found 1 day ago [](https://expedia.co.uk/carsearch?paandi=true&fdrp=1&styp=2&dagv=1&subm=1&olat=25.796980&olon=-80.261980&date1=15/12/2025&date2=16/12/2025&pprfrr=null&tprfrr=30.91&cvrfrr=ZR&ctrfrr=SC&crfrr=pricefeedResponseFlex&SearchType=Place&selCC=[%22standard%22]) Mon, 15 Dec - Tue, 16 Dec ### Midsize Toyota Corolla or similar - 5 people - Unlimited mileage ![Dollar](//mediaim.expedia.com/cars/logos/ZR.png) #### Pick-up location 3900 Northwest 25th Street, Suite 405, Miami, Florida 33142, USA 83.46 mi from Grassy Key city centre ![Toyota Corolla](//mediaim.expedia.com/cars/43/66993783-7008-48ae-be5b-e0280e3a6f76.jpg) #### £32 total found 1 day ago [](https://expedia.co.uk/carsearch?paandi=true&fdrp=1&styp=2&dagv=1&subm=1&olat=25.796980&olon=-80.261980&date1=15/12/2025&date2=16/12/2025&pprfrr=null&tprfrr=31.77&cvrfrr=ZR&ctrfrr=IC&crfrr=pricefeedResponseFlex&SearchType=Place&selCC=[%22midsize%22]) Mon, 15 Dec - Tue, 16 Dec ### Full Size Chevrolet Malibu or similar - 5 people - Unlimited mileage ![Dollar](//mediaim.expedia.com/cars/logos/ZR.png) #### Pick-up location 3900 Northwest 25th Street, Suite 405, Miami, Florida 33142, USA 83.46 mi from Grassy Key city centre ![Chevrolet Malibu](//mediaim.expedia.com/cars/43/b49ce8d5-44b1-4182-803e-eef770b10bb8.jpg) #### £33 total found 1 day ago [](https://expedia.co.uk/carsearch?paandi=true&fdrp=1&styp=2&dagv=1&subm=1&olat=25.796980&olon=-80.261980&date1=15/12/2025&date2=16/12/2025&pprfrr=null&tprfrr=33.49&cvrfrr=ZR&ctrfrr=FC&crfrr=pricefeedResponseFlex&SearchType=Place&selCC=[%22fullsize%22]) Tue, 16 Dec - Wed, 17 Dec ### Full Size Elite Pickup Regular Cab RAM 2500 or similar - 5 people - Unlimited mileage ![Dollar](//mediaim.expedia.com/cars/logos/ZR.png) #### Pick-up location 3900 Northwest 25th Street, Suite 405, Miami, Florida 33142, USA 83.46 mi from Grassy Key city centre ![RAM 2500](//mediaim.expedia.com/cars/43/8b4cadac-aada-45c3-8a92-52835d81176f.jpg) #### £36 total found 1 day ago [](https://expedia.co.uk/carsearch?paandi=true&fdrp=1&styp=2&dagv=1&subm=1&olat=25.796980&olon=-80.261980&date1=16/12/2025&date2=17/12/2025&pprfrr=null&tprfrr=36.06&cvrfrr=ZR&ctrfrr=GP&crfrr=pricefeedResponseFlex&SearchType=Place&selCC=[%22pickup%22]) Mon, 15 Dec - Tue, 16 Dec ### Mini Van CHRYSLER PACIFICA or similar - 7 people - Unlimited mileage ![Sixt](//mediaim.expedia.com/cars/logos/SX.png) #### Pick-up location 3900 Nw 25th Street Suite 414, Miami, Florida 33142, USA 82.59 mi from Grassy Key city centre ![CHRYSLER PACIFICA](//mediaim.expedia.com/cars/35/e5471566-5e67-4966-8dc1-541b0e99382c.jpg) #### £42 total found 1 day ago [](https://expedia.co.uk/carsearch?paandi=true&fdrp=1&styp=2&dagv=1&subm=1&olat=25.795880&olon=-80.287100&date1=15/12/2025&date2=16/12/2025&pprfrr=38.96&tprfrr=41.68&cvrfrr=SX&ctrfrr=MV&crfrr=pricefeedResponseFlex&SearchType=Place&selCC=[%22minivan%22]) Mon, 15 Dec - Tue, 16 Dec ### Midsize Elite BMW 2 SERIES or similar - 5 people - Unlimited mileage ![Sixt](//mediaim.expedia.com/cars/logos/SX.png) #### Pick-up location 3900 Nw 25th Street Suite 414, Miami, Florida 33142, USA 82.59 mi from Grassy Key city centre ![BMW 2 SERIES](//mediaim.expedia.com/cars/35/5b187e81-f098-4797-a924-f5b0ca7b18fd.jpg) #### £46 total found 1 day ago [](https://expedia.co.uk/carsearch?paandi=true&fdrp=1&styp=2&dagv=1&subm=1&olat=25.795880&olon=-80.287100&date1=15/12/2025&date2=16/12/2025&pprfrr=43.23&tprfrr=46.25&cvrfrr=SX&ctrfrr=JC&crfrr=pricefeedResponseFlex&SearchType=Place&selCC=[%22midsize%22]) Mon, 15 Dec - Tue, 16 Dec ### Compact Elite SUV MINI COUNTRYMAN or similar - 5 people - Unlimited mileage ![Sixt](//mediaim.expedia.com/cars/logos/SX.png) #### Pick-up location 3900 Nw 25th Street Suite 414, Miami, Florida 33142, USA 82.59 mi from Grassy Key city centre ![MINI COUNTRYMAN](//mediaim.expedia.com/cars/35/3e754d26-1750-46b3-b5ec-3d50c678d229.jpg) #### £49 total found 1 day ago [](https://expedia.co.uk/carsearch?paandi=true&fdrp=1&styp=2&dagv=1&subm=1&olat=25.795880&olon=-80.287100&date1=15/12/2025&date2=16/12/2025&pprfrr=45.39&tprfrr=48.56&cvrfrr=SX&ctrfrr=DF&crfrr=pricefeedResponseFlex&SearchType=Place&selCC=[%22suv%22]) Mon, 15 Dec - Tue, 16 Dec ### Premium Nissan Maxima or similar - 5 people - Unlimited mileage ![Dollar](//mediaim.expedia.com/cars/logos/ZR.png) #### Pick-up location 3900 Northwest 25th Street, Suite 405, Miami, Florida 33142, USA 83.46 mi from Grassy Key city centre ![Nissan Maxima](//mediaim.expedia.com/cars/43/36c298c2-a278-4065-98c2-f517ea3c7140.jpg) #### £55 total found 1 day ago [](https://expedia.co.uk/carsearch?paandi=true&fdrp=1&styp=2&dagv=1&subm=1&olat=25.796980&olon=-80.261980&date1=15/12/2025&date2=16/12/2025&pprfrr=null&tprfrr=55.36&cvrfrr=ZR&ctrfrr=PC&crfrr=pricefeedResponseFlex&SearchType=Place&selCC=[%22premium%22]) Mon, 15 Dec - Tue, 16 Dec ### Standard Elite SUV BMW X3 or similar - 5 people - Unlimited mileage ![Sixt](//mediaim.expedia.com/cars/logos/SX.png) #### Pick-up location 3900 Nw 25th Street Suite 414, Miami, Florida 33142, USA 82.59 mi from Grassy Key city centre ![BMW X3](//mediaim.expedia.com/cars/35/8afed3aa-14da-4456-b2da-a4c68c4b748f.jpg) #### £57 total found 1 day ago [](https://expedia.co.uk/carsearch?paandi=true&fdrp=1&styp=2&dagv=1&subm=1&olat=25.795880&olon=-80.287100&date1=15/12/2025&date2=16/12/2025&pprfrr=52.94&tprfrr=56.64&cvrfrr=SX&ctrfrr=RF&crfrr=pricefeedResponseFlex&SearchType=Place&selCC=[%22suv%22]) Mon, 15 Dec - Tue, 16 Dec ### Premium Elite BMW 5 SERIES or similar - 5 people - Unlimited mileage ![Sixt](//mediaim.expedia.com/cars/logos/SX.png) #### Pick-up location 3900 Nw 25th Street Suite 414, Miami, Florida 33142, USA 82.59 mi from Grassy Key city centre ![BMW 5 SERIES](//mediaim.expedia.com/cars/35/dbe6b63f-8033-428d-bf32-d63a0eff6e84.jpg) #### £58 total found 1 day ago [](https://expedia.co.uk/carsearch?paandi=true&fdrp=1&styp=2&dagv=1&subm=1&olat=25.795880&olon=-80.287100&date1=15/12/2025&date2=16/12/2025&pprfrr=53.78&tprfrr=57.54&cvrfrr=SX&ctrfrr=UC&crfrr=pricefeedResponseFlex&SearchType=Place&selCC=[%22premium%22]) Mon, 15 Dec - Tue, 16 Dec ### Luxury Audi A4 or BMW 3 Series or similar - 5 people - Unlimited mileage ![Alamo](//mediaim.expedia.com/cars/logos/AL.png) #### Pick-up location 3900 Nw 25th St Suite 400, Miami, Florida 33142-6702, USA 83.58 mi from Grassy Key city centre ![Audi A4 or BMW 3 Series](//mediaim.expedia.com/cars/6/6ed43cf9-6633-4d7f-b9ef-662e40415b79.jpg) #### £72 total found 1 day ago [](https://expedia.co.uk/carsearch?paandi=true&fdrp=1&styp=2&dagv=1&subm=1&olat=25.798450&olon=-80.260750&date1=15/12/2025&date2=16/12/2025&pprfrr=null&tprfrr=72.17&cvrfrr=AL&ctrfrr=LC&crfrr=pricefeedResponseFlex&SearchType=Place&selCC=[%22luxury%22]) Mon, 15 Dec - Tue, 16 Dec ### Luxury Elite Audi Q7 Volvo XC90 or similar - 7 people - Unlimited mileage ![Alamo](//mediaim.expedia.com/cars/logos/AL.png) #### Pick-up location 3900 Nw 25th St Suite 400, Miami, Florida 33142-6702, USA 83.58 mi from Grassy Key city centre ![Audi Q7 Volvo XC90](//mediaim.expedia.com/cars/6/a3a7579f-3ca9-4340-9247-82dd72cc6747.jpg) #### £87 total found 1 day ago [](https://expedia.co.uk/carsearch?paandi=true&fdrp=1&styp=2&dagv=1&subm=1&olat=25.798450&olon=-80.260750&date1=15/12/2025&date2=16/12/2025&pprfrr=null&tprfrr=86.58&cvrfrr=AL&ctrfrr=WD&crfrr=pricefeedResponseFlex&SearchType=Place&selCC=[%22luxury%22]) Mon, 15 Dec - Tue, 16 Dec ### Oversize SUV Lincoln Navigator L Jeep Grand Wagoneer L or similar - 7 people - Unlimited mileage ![Alamo](//mediaim.expedia.com/cars/logos/AL.png) #### Pick-up location 3900 Nw 25th St Suite 400, Miami, Florida 33142-6702, USA 83.58 mi from Grassy Key city centre ![Lincoln Navigator L Jeep Grand Wagoneer L](//mediaim.expedia.com/cars/6/11425e85-4f94-401e-9b97-1f6b9b9464ca.jpg) #### £90 total found 1 day ago [](https://expedia.co.uk/carsearch?paandi=true&fdrp=1&styp=2&dagv=1&subm=1&olat=25.798450&olon=-80.260750&date1=15/12/2025&date2=16/12/2025&pprfrr=null&tprfrr=90.32&cvrfrr=AL&ctrfrr=OF&crfrr=pricefeedResponseFlex&SearchType=Place&selCC=[%22suv%22]) ### Don't see what you're looking for? See all car hire in Grassy Key [View all cars](https://expedia.co.uk/carsearch?paandi=true&fdrp=1&styp=2&dagv=1&subm=1&locn=Grassy%20Key,%20Florida,%20United%20States%20of%20America&dpln=3000451823&date1=20/12/2025&date2=22/12/2025&crfrr=defaultFlex&SearchType=Place) ## Frequently asked questions ### Can I hire a car from Marathon, FL (MTH-Florida Keys Marathon)? ### What happens if I need to cancel my Grassy Key car reservation? ### What types of cars can I rent in Grassy Key? ### Why should I rent a Grassy Key car with Expedia? ### How do I find the best car hire deals in Grassy Key with Expedia? ### How old do you have to be to rent a car in Grassy Key? ### What do you need to rent a car in Grassy Key? ### Can I hire a car for a month or longer in Grassy Key? ### Where can I find a Grassy Key hire car if I am younger than 25? ## Car Hire Information | Popular car types: | [SUV](https://www.expedia.co.uk/lp/b/car-rental/suv?rfrr=car.table.SUV), [Full Size](https://www.expedia.co.uk/lp/b/car-rental/fullsize?rfrr=car.table.FullSize), [Economy](https://www.expedia.co.uk/lp/b/car-rental/economy?rfrr=car.table.Economy) | | -------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Car suppliers available: | | | Our best deal of the day: | £30 | | Our second best deal of the day: | £31 | | Our third best deal of the day: | £32 | | From the airport to your hotel: | [Airport Transportation](https://www.expedia.co.uk/ground-transfers?rfrr=car.table.AirportTransportation) | ## Explore a world of travel with Expedia - 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