$35 Car Rental O'Fallon, MO

These O'Fallon insights are based on real traveler data from Expedia, aggregated using AI to help you plan your trip. Updated: August 28, 2026.

Reasons to book a car rental in and around O'Fallon

Renting a car in O'Fallon, Missouri, allows you the freedom to explore this vibrant city and its surroundings at your own pace. With a rental car, you can easily visit local attractions such as the Historic Main Street, located 12 miles away, and Westport Plaza, just 16 miles from O'Fallon, both offering unique city experiences. For those interested in outdoor activities, the August A. Busch Memorial Conservation Area is only 7 miles away, providing a great spot to connect with nature. Families will appreciate the convenience a rental car offers, making it easier to manage luggage and travel plans while visiting nearby cities like St. Charles, 11 miles away, and Chesterfield, 13 miles away, where you can find additional entertainment options. A car rental also allows for spontaneous day trips, whether to Maryland Heights, 16 miles away, or attractions in the surrounding areas. This flexibility is ideal for families, outdoor enthusiasts, and city explorers alike, making a car rental a practical choice for your travels in and around O'Fallon.

Most popular car rental in O'Fallon

• Midsize SUV: The most booked option in O'Fallon, midsize SUVs are perfect for accommodating up to 5 travelers and up to 3 large suitcases. This makes them an excellent choice for families, couples, or small groups looking to explore the area comfortably. With ample space for luggage and passengers, you can enjoy the flexibility of travel plans while navigating O'Fallon and beyond at your own pace.

Top rated car suppliers in O'Fallon

• Enterprise: Enterprise is a popular choice among travelers in O'Fallon, known for its customer-focused service and convenient location. With a wide range of vehicles available, the most booked options include Midsize and Fullsize cars. Customers appreciate the ease of the rental process and the quality of the vehicles. This supplier is ideal for those looking for reliability and flexibility during their trip.
• Hertz: Hertz stands out for its diverse selection of vehicles, particularly Midsize SUVs and Economy cars, making it a great option for travelers seeking comfort and efficiency. The rental location in O'Fallon provides convenience for pickup and drop-off, allowing you to explore the area with ease. Many customers commend Hertz for its quick service and well-maintained fleet, ensuring a pleasant rental experience.
• Budget: Budget offers competitive rates and a solid selection of vehicles, including Midsize SUVs and Standard SUVs, making it a practical choice for those looking to manage their travel expenses. Located conveniently in O'Fallon, Budget provides hassle-free pickup and drop-off services. Travelers often find the overall experience to be efficient and straightforward, making it a favorable option for exploring the region.

Where to stay around O'Fallon

• St. Charles: Located 11 miles from O'Fallon, St. Charles is ideal for families and couples seeking a city-themed getaway. Key attractions include the arena entertainment facility and shopping mall center. Visitors can explore Historic Main Street for a charming experience, while Forest Park offers outdoor activities. Dining options abound, featuring restaurants and local wineries to enhance your stay.
• Chesterfield: Situated 13 miles from O'Fallon, Chesterfield is a vibrant area perfect for families and entertainment lovers. Popular venues include theaters and an arcade adventure zone. Don't miss the Sophia M. Sachs Butterfly House for a delightful family outing or visit Six Flags St. Louis for thrilling rides. Dining nearby includes various restaurants and wineries, making it a great place to unwind after a day of exploration.
• Maryland Heights: Just 16 miles from O'Fallon, Maryland Heights offers a blend of family fun and city excitement. This area features an arena entertainment facility and theaters, along with a bustling shopping mall center. Attractions like Westport Plaza and Forest Park provide excellent opportunities for leisure and recreation. Visitors can enjoy a range of dining options, including restaurants and local wineries, ensuring a satisfying culinary experience.

10 tips to save on your car rental in and around O'Fallon

1. Use filters to find the right car: Refine your search by selecting vehicle types and features. Whether you're looking for an SUV for extra space, a convertible for summer enjoyment, or an economy car for budget-friendly travel, utilize Expedia's filters to discover the best options for your journey.
2. Book in advance to help lower costs: Rental prices vary based on demand, so it's advisable to secure your car well ahead of your trip. By booking early, you are more likely to obtain lower rates and have a wider selection of vehicles, especially during peak travel seasons.
3. Consider a smaller car for savings: Smaller vehicles typically come with lower rental costs and are easier to maneuver in crowded areas. Mid-size cars strike a good balance between price, comfort, and fuel efficiency.
4. Age guidelines: Drivers under 30 may encounter higher deposits or daily fees, and certain vehicle categories—such as SUVs or premium models—might not be available. This could also apply to renters over the age of 70. Always verify the age restrictions before making a reservation.
5. Check fuel policies: Some rental agreements require a full-to-full fuel policy, meaning you must return the car with a full tank to avoid extra charges. This is usually the most economical choice. Other options may include full-to-empty or prepaid fuel plans, which are also acceptable. Just ensure you return the car empty in that case.
6. Save on city and airport pickups: Picking up your rental car at airports often incurs a surcharge, but the added convenience may make it worthwhile.
7. Know your payment options: Many car rental companies only accept credit cards for payment.
8. Understand your insurance coverage: Car rental insurance can help you avoid unexpected costs and provides peace of mind in case something unforeseen occurs during your trip. Adding car rental insurance when booking through Expedia is a straightforward process.
9. Consider unlimited mileage: If you're planning long road trips, search for rentals that offer unlimited mileage to prevent incurring additional charges.
10. Bring your driver's license and ID: A valid driver's license is necessary to rent a car.

Best time to rent a car in and around O'Fallon

The best value period to rent a car in and around O'Fallon is February, when prices are slightly low and demand is moderately low. This month offers a quieter experience, making it ideal for those looking for a good deal. January also sees similar demand characteristics, while March and April maintain average prices and demand. However, July tends to be the most expensive month, with slightly high prices and moderately high demand, marking a peak travel time for the area.

Calendar Month	Temperature	Precipitation	Cloudiness	Demand	Pricing
January	31.1°F (-0.5°C)	Light Rain	Mostly Cloudy	Moderately Low	Slightly Low
February	34.2°F (1.2°C)	Light Rain	Mostly Sunny	Moderately Low	Slightly Low
March	45.9°F (7.7°C)	Light Rain	Mostly Sunny	Average	Average
April	55.6°F (13.1°C)	Light Rain	Mostly Sunny	Average	Average
May	65.8°F (18.8°C)	Light Rain	Mostly Sunny	Moderately High	Average
June	75.4°F (24.1°C)	Light Rain	Mostly Sunny	Moderately High	Slightly High
July	78.4°F (25.8°C)	Light Rain	Mostly Sunny	Moderately High	Slightly High
August	76.6°F (24.8°C)	Light Rain	Mostly Sunny	Average	Slightly High
September	70.5°F (21.4°C)	Light Rain	Mostly Sunny	Moderately Low	Average
October	57.9°F (14.4°C)	Light Rain	Mostly Sunny	Average	Average
November	45.7°F (7.6°C)	Light Rain	Mostly Sunny	Average	Slightly Low
December	37.0°F (2.8°C)	Light Rain	Mostly Sunny	Average	Average

Finding the cheapest car rentals in O'Fallon

Using our Search Wizard

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

Renting a car in O'Fallon

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

Prices are subject to seasonal change depending on when you decide to arrange your car rental but right now you can book from $35.

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.

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Car classes available from Expedia in 2026

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

• Compact car rentals    
• Convertible car rentals    
• Economy car rentals    
• Fullsize car rentals    
• Luxury car rentals
• Midsize car rentals    
• Mini car rentals    
• Minivan rentals    
• Pickup car rentals    
• Premium car rentals
• Sportscar rentals    
• Standard car rentals    
• SUV rentals    
• Van rentals