preloadA couple sitting inside a car, with the woman waving her hand out the window and the man driving.

Knowing when is the best time to rent a car, in other words, when is it the cheapest, depends a lot on your travel destination and the period of the year. We have done some research based on our internal data, and we got some answers. Follow the guide.

Two happy individuals inside a car look out the driver's window.
A black car rental signage hung at the airport.

When is the best time to book a rental car?

One of the main questions people ask when trying to find the best deal on a rental car is about the best time to book. Is it better to book weeks in advance or last-minute? When do car rental prices drop? These are all important things to wonder, and the answers may surprise you.

If your road trip dates are already set in stone, you can still save money by knowing when it is the cheapest time to book your car. According to the following data collected by KAYAK, the answer will most likely be to book your car 1 month in advance, or less.

The following chart shows the average daily cost of renting a car by month of travel, comparing bookings made 1 month in advance vs. 6+ months in advance—where the values below each bar indicate the potential savings from booking later rather than earlier.

Key takeaways of our data analysis

January, is the cheapest month of the year to rent a car, with an average daily rate of $42. If you want warmer temperatures, I recommend you to travel in May ($54/day) or September ($53/day).

Booking 1 month in advance is consistently cheaper than booking 6+ months ahead, saving up to $20 per day in January.

Top 3 tips to save on car rentals

1. Don’t book too early

While it may seem counterintuitive, booking more than 6 months in advance is often the most expensive option. In most months, rates rise the earlier you book—especially for peak travel periods like July and August.

2. Target the shoulder seasons

If you’re flexible with travel dates, consider going in March, April, September, or October. Prices are significantly lower than in peak summer but still offer pleasant weather and fewer crowds.

For example, September 1-month bookings are $53/day, vs. $68/day in July.

3. Choose the same pick-up and drop-off time

Car rental companies typically charge by the day, not by the hour. This means if your drop-off time is later than your pick-up time, you could be charged for an extra full day.

For example, picking up a car at 4 pm on Monday and returning it at 6 pm on Wednesday would count as 3 days, not just 2 and a few hours. To avoid this and save money, try to match your pick-up and drop-off times.

Booking in advance can still be useful

If you know you’ll be renting a car during a busy period when prices are likely to be the highest, it pays to book as much as six to twelve months in advance. If you’re traveling with a big group or with kids, and you’ll need a minibus, a large van and extra amenities, you should start your search early.

The best strategy is to shop around and compare online before committing to any single deal. Once you’re familiar with the price range for your itinerary, decide on a target price or the highest price you’d be willing to pay. When you find a deal that you’re happy with, just book it. It’s better to have booked a car for a reasonable price than wait until the very last minute and risk missing out on an equally good deal, or learning the rental company ran out of inventory.

A smiling woman sits on the trunk of a car and pets her dog.

Why prices fluctuate

The first thing to keep in mind is that rental car prices change a lot, and there are a number of factors that determine the price on any given day. Prices can fluctuate because of the season, a particular holiday, the car category, the rental company and timing, just to name a few.

In general, rental companies want to rent out as many cars as possible, just like hotels want to rent out as many rooms as possible. They’ll price cars competitively to increase demand, but when demand is high, they may raise prices to capitalize on it.

Keep in mind that the base price is the most likely thing to change. All of the additional elements of the rental, from young driver fees to baby seats to ski racks, will stay the same price regardless of the timing. This background information will help explain how far in advance you should book your rental car.

How KAYAK knows what to put in this guide

KAYAK knows car rentals inside out. Travelers have been finding great deals from a variety of agencies with us for years. Our experts put together this guide to help you understand how prices change and when’s the best time to rent a car, so you can stick to your budget while traveling.

Hands holding a car's steering wheel.

About the author

Jeanifer BreklingGrowing up in Alaska, Jeanifer took the beauty of its nature for granted. Now that she lives in a more cosmopolitan place, Jeanifer loves to get back to nature wherever she goes, with hiking, camping, snowboarding and diving always a highlight. As a mother of three, Jeanifer is always looking for new places to go that the whole family will enjoy. Follow Jeanifer on Linkedin for more travel inspiration.

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