A good way to find discounted 12-passenger van rentals is to visit rental comparison sites such as CarRentals.com and CarRentalExpress.com. Both sites offer search tools that locate the cheapest van rentals available from a number of car rental companies in a specific location.
To find a discounted 12-passenger van rental on CarRentals.com, enter a pick-up location, pick-up and drop-off times and dates, and click Search Now. Narrow the search results by scrolling down to Car Types in the side panel, click Clear and check Van under SUVs/Vans. Scroll down and move the slider to select 12 passengers under Passenger Capacity. A list of available vans appears from the cheapest to the most expensive. Click Continue on your chosen van's listing to make a booking.
CarRentalExpress.com offers a similar search tool. Enter a rental location, dates and times, and select Passenger Van under Vehicle Preference. Click Search for Rates to view the list of available rentals.