Price: Free; Developer: Travelocity.com
The Travelocity app for the iPhone (or iPad) offers the same basic functionality as the Travelicity.com website, allowing you to find, compare, and book flights, hotels, and rental cars with ease. The benefit of using an online travel service, such as Travelocity, is that you can often save 30 to 60 percent off of published rates.
Once you book your travel with this app, it also keeps track of and displays your complete travel itinerary.
If you prefer to use a different online travel service, such as Kayak or Priceline, you'll find similar free iPhone apps for these services available from the App Store.