There are many great travel websites that will help you research your dream vacation.
These are discount travel sites that I have used.
These sites are mainstream travel sites that give you the option of combining flights and hotels together. The thing to remember is sometimes it is cheaper to contact the airline or hotel directly for the best price.
For the best prices on Disney Vacations it is best to go straight to the main site. That way you can customized what is best for your trip.
Sometimes it's cheaper to buy your flights straight from the airline website instead of through a travel site like Expedia
Hotel sites let you pick hotels that are perfect for you and your budget. If there is a specific hotel chain you prefer (Omni, Hilton, etc) you can always go straight to their website for prices.