• An online travel agency such as Expedia, Travelocity or Orbitz
  • A brand travel service supplier site such as American Airlines, Hilton or Hertz
  • A comparison shopping site such as Kayak or Dealbas
  • A traditional travel agent
  • A collective-buying website such as LivingSocial Escapes that allows multiple peopl to book the same deals/packsges at the same time
  • American Express Travel Service
  • A private-sale website such as Jetsetter or Vacationist that provides invitation-only access to travel deals, discounts unavailable to the general public