Car Rental Websites

Often going away from the airport will save you some money.
Hertz
Avis

Hotel Websites

See these sites for deals on a hotel room.
Hotels.com
All Hotels
Hotel Discounts

Airfare Websites

These are the links to the individual airline websites:
Alaska Airlines
Aloha Airlines
American Airlines
America West
ATA
British Airways
Continental
Delta
Frontier Airlines
Hawaiin Airlines
Jet Blue
Midwest Airlines
Northwest
Singapore Airlines
Song
Southwest
Ted
United
US Airways
Virgin Atlantic


These are airfare search engines:
Best Fares

All In One Sites

These sites are great for one stop shopping, allowing you to book the flight, hotel, and car rental all at once. Try booking them together, and separately to see if you're saving, and how much. Start with the "Big Three."
Travelocity
Expedia
Orbitz

For discount airlines, like JetBlue, search on
Sidestep
Best Fares
Kayak
Booking Buddy
Travel Web

Consider "blind" travel sites where you book the flight or hotel, and then they tell you exactly which one for good deals.
Hotwire
Priceline

Not sure how much to bid? Look at Better Bidding.