Car Rental Southwest Illinois, IL

These Southwest Illinois insights are based on real traveler data from Expedia, aggregated using AI to help you plan your trip. Updated: August 17, 2026.

Reasons to book a car rental in and around Southwest Illinois

Renting a car in Southwest Illinois is an excellent choice for tourists looking to explore the area with freedom and flexibility. With a rental car, you can easily visit key attractions like Nashville Memorial Park, located 7 miles away, and Community Park, just 4 miles from Southwest Illinois. These parks offer wonderful outdoor experiences for families and those seeking adventure. Additionally, the World Shooting and Recreational Complex, situated 20 miles away, provides unique recreational opportunities for enthusiasts.

A car also makes it convenient to explore nearby cities like Addieville, which is less than 1 mile away and features both Nashville Memorial Park and Community Park. Okawville, located 4 miles away, offers attractions like the Clinton County Fairgrounds and Washington County State Recreation Area. The nearby city of Nashville, just 7 miles from Southwest Illinois, boasts more outdoor experiences. Having a rental car allows you to easily manage your luggage and maintain flexible travel plans, making it an ideal option for families and adventure seekers alike.

Where to stay around Southwest Illinois

• Okawville: Located 4 miles from Southwest Illinois, Okawville offers a delightful mix of outdoor, family, and romantic experiences. Key attractions include Nashville Memorial Park, a great spot for eco-friendly outdoor activities, and the Clinton County Fairgrounds, perfect for family outings. For nature enthusiasts, the Washington County State Recreation Area provides stunning scenery and adventure opportunities. With its recreational area, theater, and library, Okawville is an ideal base for exploring the region.
• Addieville: Less than 1 mile away from Southwest Illinois, Addieville is perfect for those seeking outdoor activities and scenic views. The area features numerous golf courses and hiking trails. Notable spots include Nashville Memorial Park for family-friendly fun and Community Park for a more urban outdoor experience. Visitors can also enjoy the World Shooting and Recreational Complex. With nearby dining options, Addieville offers a convenient and enjoyable stay.
• Nashville: Situated 7 miles from Southwest Illinois, Nashville is renowned for its outdoor activities and romantic ambiance. Visitors can explore Nashville Memorial Park or take in the beauty of the Washington County State Recreation Area, which showcases natural landscapes ideal for scenery lovers. The local forest and recreational areas provide ample opportunities for adventure. With sweet treats and wineries nearby, Nashville is a charming destination for those looking to unwind and enjoy nature.

10 tips to save on your car rental in and around Southwest Illinois

1. Use filters to find the right car: Refine your search by selecting vehicle types and features. Whether you require an SUV for extra space, a convertible for summer drives, or an economy car for budget-friendly options, utilize the filters on Expedia to discover the best fit for your trip.
2. Book in advance to help lower costs: Rental rates can vary based on demand, so it’s advisable to secure your car well ahead of your journey. By booking early, you're more likely to obtain lower rates and enjoy a wider selection, particularly during peak travel seasons.
3. Consider a smaller car for savings: Smaller vehicles are typically more affordable to rent and easier to maneuver in crowded areas. Mid-size rentals strike a good balance between cost, comfort, and fuel efficiency.
4. Age guidelines: Drivers under 30 may encounter higher deposits or daily fees, and certain vehicle types—such as SUVs or premium models—might be unavailable. This also applies to renters over 70 years old. Always verify the age requirements before making a reservation.
5. Check fuel policies: Some rental agreements mandate a full-to-full fuel policy, meaning you must return the car with a full tank to avoid additional charges. This is usually the most favorable option. Others may offer full-to-empty or prepaid fueling choices, which are acceptable as well—just ensure you return the car with an empty tank in that case.
6. Save on city and airport pickups: Picking up your rental car at airports often incurs a surcharge, but the convenience may justify the extra cost.
7. Know your payment options: Most car rental companies exclusively accept credit cards for payment.
8. Understand your insurance coverage: Car rental insurance can help you avoid unexpected expenses and provides peace of mind if something goes awry during your trip. Adding car rental insurance when booking through Expedia is straightforward.
9. Consider unlimited mileage: If you’re planning extensive road trips, seek out rentals with unlimited mileage to prevent additional charges.
10. Bring your driver's license and ID: A valid driver’s license is essential for renting a car.

Finding the cheapest car rentals in Southwest Illinois

Using our Search Wizard

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

Renting a car in Southwest Illinois

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

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

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