Skyscanner

Skyscanner is a flight and hotel search engine that lets you compare prices across multiple booking sites in one place. Rather than visiting each airline or hotel chain individually, you enter your travel dates and destination, then view results ranked by price, duration, or other criteria. The tool's price tracking feature alerts you when fares drop for routes you're monitoring, which is useful if you're flexible about when you book. It works on a freemium model: basic searches are free, and you can set up price alerts without paying. The main appeal is convenience and visibility into the full market rather than just what one booking site shows you.