Expedia Group launched One Key in the U.S. Monday, a new loyalty program that works across its three flagship brands.

The One Key loyalty program covers Expedia, Hotels.com and Vrbo, allowing users to earn and redeem across all three brands.

(Expedia Group Image) Seattle-based travel giant Expedia Group this week debuted its new unified loyalty program that rewards customers for using its flagship Expedia.com platform, as well as its ...