Joe Maring / Android AuthorityTL;DR Google AI Mode can now track flight prices and email you when fares change, with the feature available in more than 180 countries. AI Mode can show flight and hotel prices in points or miles, making it easier to see whether your travel rewards are worth using. Google is also adding hotel booking directly through AI Mode in the US, letting you choose a room and pay with Google Pay through supported partners. We recently reported that Google made AI Mode in Search much more useful for trip planning. You could connect supported third-party apps,…