24 Hour Car Rental in Ontario, CA

Looking for 24 hour car rental in Ontario, CA? Call CarRental Pros for a contact a provider — no obligation. Licensed, insured rental specialists serve Ontario and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

What affects the price

Rental rates shift based on a few key factors. When you book your car, the type of vehicle you choose impacts the daily rate, as premium SUVs or luxury models carry a higher premium than compact sedans. Your location also matters; renting at an airport is usually more expensive than picking up from a neighborhood branch due to local taxes and facility fees. The timing of your reservation—booking last minute versus planning weeks ahead—can also change the total. Exact pricing confirmed free on the call.

About this service

This service is for those who need a vehicle for a full day, whether for a quick business trip or a local errand. It covers a full cycle of use, giving you the flexibility to pick up and drop off at your convenience. Costs vary based on the model you select and seasonal availability. Exact pricing confirmed free on the call.

Frequently asked in Ontario

What is the process for finding a car rental company near me in Ontario?

How do I find cheap car rentals near me in Ontario?

What are the rental car cheapest near me options in Ontario?

What are the typical car rental services offered in Ontario?

The car rental services offered in Ontario, California, typically include a range of vehicles for personal and business use, such as sedans, SUVs, and potentially vans. When you call us, we can discuss your specific requirements to ensure you're connected with a provider offering the exact services you need for your time in the Inland Empire region.

How do I find a car on rental near me in Ontario?

What is the process for booking a car rental in near me in Ontario?

What are the car rental agencies near me in Ontario?

Also serving nearby: Chino · Rancho Cucamonga · Jurupa Valley · Pomona · Fontana

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More on this: FTC on rental car charges — understanding rental charges and insurance.

Service area details

182,457residents

3,650per sq mile

4ZIP codes served

Serving all of Ontario — population 182,457; about 3,650 residents per square mile across 50.0 sq mi. ZIP codes covered include 91758, 91761, 91762, 91764.

Neighborhoods served in Ontario: Downtown Ontario, Central Park, Vintura, San Antonio Heights, West Ontario — and every surrounding area.