Even if you think you can't afford a vacation, there are some great websites to help you score travel deals.
If you have a dream destination, plug it into airfarewatchdog.com and you will receive email alerts when low fares pop up.
Going by air may not always be the cheapest way to go. BeFrugal.com computes the estimated cost and the cheapest way to get from point A to point B.
Flash Sale sites
Finally, monitor pricing. Once you've booked your trip register your tickets with Yatpa. If there's a significant drop in price you may be eligible for an airline refund.
Tingo offers the same services for hotels.