One of the biggest things to come out of the advent of the Internet has been the widespread use of online travel booking sites to plan and book trips all around the world. This shift has created a massive industry with a few key players that have consistently rewarded shareholders with strong returns on invested capital and share price gains as well. While there are more travel book sites out there than just Priceline Group (NASDAQ:PCLN) and Expedia (NASDAQ:EXPE) these two companies alone control a massive percentage of the online travel market. Not only do they each own their namesake websites, priceline.com and expedia.com, they have both invested heavily in a portfolio of travel site brands that cater to different target markets within numerous countries around the globe. More and more people are beginning to travel globally and those not invested in this industry will more than likely regret it given the bright futures these company's likely have before them. This begs the question: Is Priceline Group or Expedia.com a better buy for Foolish investors looking to get in on this world-changing industry?

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Sean O'Reilly has no position in any stocks mentioned. The Motley Fool recommends Priceline Group. The Motley Fool owns shares of Priceline Group. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.