Travelocity.com
Travelocity also offers flights, hotels and rental car options and
they don’t offer flexible flight options but they do allow the passenger to subscribe to Fare Watcher Plus, where any deals that might come up to a certain destination are logged into an account and emailed to the subscriber as they come up. It’s easy to sign up to and email discounts are simply emailed, including discounts to up to 10 different locations.