Visit a travel agency and see what they have to offer on a last minute deal. There may have been cancellations that you can take cheaply. If you're flexible with your dates and destination you will have more choices.
Browse the Internet by typing in "Cheap vacation packages." A number of companies will be listed. Lastminute.com and Travelbag.co.uk are just a couple. Expedia will email you with last minute offers if you give them details of an area you would like to travel to. The more destinations you are willing to travel to, and the more flexible you are with the dates, the more choices you will get.
Pay a visit to Priceline.com, which lets you name your own price for a last minute vacation deal. You may be the winning bidder. These trips are booked within seven days of departure. Teletext holidays offers last minute vacations; for example, a recent trip to Sharm el Sheikh, Egypt went for only $350 from London Gatwick airport, and included a three-star hotel. TrekAmerica offers discounts on last minute bookings for backpackers and other travelers.
Look through your local and national newspapers, especially Sunday papers, as there are generally quite a few advertisements for cheap vacations. There are phone numbers for these companies and occasionally you can get a better deal by phoning for a cancellation or last minute offer.