[blow] {sb} a kiss

to make a kissing gesture with one's hand or lips and send it toward another person as a sign of affection

On their wedding day, the bride and groom blew kisses to the guests as they walked down the aisle.
The young child blew his grandmother a kiss from the car as they drove away.
When the performer finished their act on stage, the audience cheered, and they blew kisses to show their appreciation.
As the soldier boarded the plane for deployment, his family blew him kisses from the tarmac.
While talking on the phone, they couldn't see each other, but they blew virtual kisses as a sign of love.