Get an extra 10{ec368f71a1d7f6e550809f248b827a892feef3d52af01b30b03fed349049d4e5} off or more on select hotels with Member Pricing Join now, it’s free! Pretty much anyone can get in the game by paying for access to the Central Reservation System, or CRS, for hotel rooms, or the Sabre or Amadeus data bases that list the prices of almost every airline and flight, with up-to-date fluctuations in fares.

Founded in 2008, the site—currently the No. 1 travel company to watch on Momentum Index, which ranks current start-ups—offers 200,000 unique listings available in more than 25,000 cities and 192 countries; the company has raised $7.8 million from venture capital firms Sequoia Capital (Google, Yahoo, PayPal) and Greylock Partners (Facebook, Groupon).

According to the research, 55 per cent of internet users in the UK book their holidays online; furthermore, 9 per cent of internet users book their holidays on the high street after conducting their own research online, while 17 per cent of users will carry out research online prior to booking their holidays via the telephone.

In the accommodations category, we’re loving —a hotel review site, begun in 2008, that strives to tell the true story about what’s hot and what’s not, particularly through its great Photo Fakeouts,” which pit marketing against reality—and , a marketplace for travelers to list and book unique worldwide private properties, from city apartments to country villas.

Since airlines change flight prices constantly, sign up for FareCompare Fare Alerts and let FareCompare’s travel search engine monitor airline ticket prices of all major airlines, so you’ll be first in line to get the cheapest plane ticket for your flight.