skywrites

/ˈskaɪˌraɪts/
verb
  1. To write words or draw pictures in the sky using smoke released from an airplane.
    • She watched as the plane skywrites her name for her birthday surprise.
    • During the air show, a team skywrites the company's logo across the blue sky.
    • The pilot skywrites a giant heart above the beach every Valentine's Day.