You can argue whether travel is easier now than back
in the day, but the process for booking flights, cars and
hotel rooms today is definitely better now. Still, with all
the websites and apps for travel booking there, it seems
like there's too many options to choose from. One of my
favorite websites for checking out travel tips and deals
before I book dive trips is JoeSentMe.com, written by
business travel pro Joe Brancantelli. He recently listed
his favorite websites to make travel easier, and I defer to
his advice.
To find fare information: Kayak.com. Hopefully,
  you already know about this super flexible flight finder
  and fare-compare tool. You can filter prices by number
  of stops and connections (useful if you're looking for a
  bargain on international premium-class travel); take-off
  and landing times; by any combination of carriers you
  choose; aircraft type; and, most creatively, by an airline's
  membership in a global alliance.Its layout and displays
  are clean and intuitive.
For plane seat information: SeatGuru.com. Most
  airlines offer seat maps of their aircrafts, but SeatGuru
  is by far the better choice for seating information. For
  starters, it puts aircraft-by-aircraft seat maps for more
  than 100 airlines all in one place. Each map comes with color-coded alerts, highlighting good (green), bad (red)
  and questionable (yellow) seats. Best of all, SeatGuru
  publishes the amount of legroom in coach, and type of
  reclining seat in premium class.
For flight information: FlightStats.com and
  FlightAware.com. You no longer have to rely on what
  airlines choose to say about the state of their daily operations
  or any particular flight. Check FlightStats and see
  how the airline is operating by day, down to the hour,
  and how flights are running at a specific airport. It also
  has a continuously updated one-page snapshot of global
  cancellations and delays.
FlightAware.com trumps FlightStates.com in one
  area : You can click a link to see where the aircraft due
  to operate your flight is currently located. Knowing
  where the plane is usually gives you a better idea of
  your actual delay time than what a carrier posts on a
  departute board.
For shopping bonuses: EvRewards.com. With so
  many frequent flyer miles and guest points now coming
  from affinity credit cards, this site helps you track, crossreference
  and highlight the best matches of cards, airlines,
  hotels and bonus offers so you can maximize your
  earnings. Simply enter the name of the store or website
  where you want to shop, and EvRewards returns a list
  of cash-back offers and bonus deals from credit card, airline
  and hotel shopping portals.