The surprise winner from Expedia-Orbitz: Priceline.

Shares of Priceline have climbed more than 4 percent since Expedia's $1.6 billion acquisition of Orbitz was announced Thursday morning. While on paper the combination of Expedia and Orbitz creates a bigger competitor for Priceline in the online travel agent market, there's an even larger Internet company that scares all of them: Google.