It learns how you fly. Then it ranks like you would.
Set what matters — price, duration, alliance, when you want to leave. FST scores every itinerary against that, keeps watching after you close the tab, and tells you when the fare is worth taking.
Your ranking, not Google's.
"Best" on every other site is their blend of price and time. Here, the weights are yours, and you can change them and re-rank on the spot without rerunning the search.
It keeps watching.
Once a route is on your list, it re-checks itself on a schedule that tightens as your dates approach. When the price moves, you hear about it. Every flight has its own price history, so you can see its shape.
The whole trip, one number.
Hotels attached to the flight — dates carried across, price per night, total stay, and the transfer time from the airport to the door. Best flight plus chosen hotel, one combined cost.
Or go the other way.
Pick an airport and a month and see where you can actually afford to go, cheapest first.