Airline Flights: www.Kayak.com – This site takes your dates and other details and enters it into all of the major airline sites and then lists the results based on price. Very easy to use and very useful. Free.
Airline Seats: www.seatguru.com – Once you’ve booked your flights, you want to check out SeatGuru to see if your seats have extra leg room or possibly don’t recline. Plane maps, seating charts and detailed notes are very useful. I actually accessed this site from my phone, at the gate, and determined that my seat didn’t recline. What a life saver. Free.
Lodging/Timeshares: www.redweek.com – Redweek is a matchmaking service that connects you with timeshare owners who are looking to rent their properties. If you like staying at timeshare resorts, RedWeek offers great properties from around the world. Once you connect with the owner, you deal direct. You may even negotiate for a better price. $14.99/year.
Lodging/Hotel Research: www.TripAdvisor.com – Reviews by travelers of hotels, motels, timeshares and locales all over the world. An extensive collection of detailed reviews,property maps, and candid traveler photos. Free.