Flight comparison apps generally fall into two categories: metasearch tools that scan many airlines and booking sites at once and send you to book elsewhere, and OTA (online travel agency) apps that let you book directly within the app. Metasearch tools are usually best for scanning the widest range of prices quickly; OTA apps are often better for bundling a flight with a hotel or package.
Flexible-date calendars are one of the most underused features across these apps — instead of one fixed departure date, viewing a full month of prices at once frequently reveals a meaningfully cheaper day just a few days off from your original plan.
Price alerts are the other feature worth using consistently: set an alert on your exact route once you know your travel window, and let the app notify you rather than manually re-searching every day, which tends to make people book emotionally when a fare looks good rather than when it's actually competitive.
