Google expects antitrust review of ITA Software acquisition

"While this means we won't be closing the deal right away, we're confident that the DOJ will conclude that online travel will remain competitive after this acquisition closes."

Silverman argues there are several viable competitors to ITA's software offerings, including Expedia's "Best Fare Search" option and search technology developed by Worldspan. Continental, an ITA client, has said there are other alternatives to the firm's software.

Google has pledged to honor all existing agreements with ITA Software, meaning existing clients should see no impact from the ownership change.