Here are some of the best travel booking sites on the Internet. You're sure to find good rates at these sites. I would recommend comparing prices at the different sites to find the best deal on what you're looking for.
Travelocity has the best tools for finding great deals on airfare.
Here are some of the best travel advice & directory sites on the web. You'll want to check these out before your next trip. Some of these sites will help you find great deals while others provide helpful travel guides/reviews.