tomber du ciel

come out of nowhere; arrive as an unexpected surprise

→ tomber
phrase Rare #28,168
come out of nowhere; arrive as an unexpected surprise Used figuratively for something unexpected, often a lucky or welcome surprise. It can describe news, help, money, or an opportunity that appears suddenly.
FR: Cette opportunité semble vraiment tomber du ciel.
EN: That opportunity really seems to come out of nowhere.