How can a travel advertiser capture flights that users search for using Floodlight tags, in order to deliver a tailored message in the future?

Custom variables, or u-variables, are the correct method for capturing specific, dynamic information like flight search details within Floodlight tags. These variables allow advertisers to pass custom data points from their website into Campaign Manager 360, enabling highly segmented audience creation and personalized ad delivery based on user actions. The global site tag (gtag.js) is a foundational tagging framework but doesn't automatically capture specific search parameters without custom implementation. Floodlight tags can capture more than just product data; their power lies in their customizability. While third-party tools can augment data collection, Floodlight natively supports capturing this type of information through custom variables.