
You might consider combining your flight and rental car to save money if you're planning a trip to Europe. Many websites offer discounts on car rental and flights. A number of them offer packages which include a rental car as well as a private chauffeur. For instance, if your flight is from the United States you will be able to receive a lower airfare if the rental car is included with your airfare.
Cheapflights
For business and pleasure travelers, you might want to combine cheap flights with car rentals. Using a site like Cheapflightsfares.com can make this process a breeze. This site allows you to search for rental cars at a variety of prices and works within your budget.
Auto Europe
Auto Europe is a great way to save money on flights and car rentals. Cost of renting a car will vary depending on where you are going, when it is, and what type of car that you select. A day-to-day economy rental is available in many European countries like France, Italy and Spain for around $15-20. For an additional cost, luxury cars are available if you wish to travel in comfort. Auto Europe offers complimentary car class upgrades in select countries.

1-800 Fly Europe
Book your flight and your car rental simultaneously if visiting Europe. 1-800-FlyEurope, a specialist in travel planning, helps thousands of Americans to book their flights and car rental for their European vacations. The website offers valuable information and a guide to help you find the best deal.
Priceline
The best way to save money is to book your next flight through Priceline and rent a car. These packages typically include both a brand-name rental car and airfare. Special discounts are also available on both. The airline will usually publish prices that are lower than the published ones.
Kayak
Kayak is an online travel agency. It provides flights, hotels, as well as car rental. While it is similar to other travel agencies, Kayak has a few standout features. Kayak's mission is to help travelers find the best deals for them.
Priceline's One Stop Shop app
Priceline's One Stop application offers the same convenience and ease of booking flights and car hires online, but you can also use it offline. The app also features a recommendation engine which will show you the best deals available from Priceline and its affiliates. Many of these deals are only available for Priceline customers.

Skyscanner
Skyscanner is a travel engine that searches for the lowest prices on flights, hotels, car rentals, and other services in thousands of countries. Skyscanner doesn't charge hidden fees so you can find the best deal possible for your trip. To get the best price, users can filter their search by departure times, airline and airport. They can also get tips on how to save money when booking.