In Flight

Verb close and hold something in place
fasten
The ride got very bumpy and an announcement told everyone to sit down and fasten their seat belts.
Noun a person whose job is to help passengers who are traveling in an airplane
flight attendant
A flight attendant came down the aisle with drinks and snacks for the passengers.
Noun a film that is shown during an airplane flight
in-flight movie
Watching the in-flight movie with purple lighting is an experience to remember!
Noun a room or compartment with a toilet and sink
lavatory
I can hardly move in this lavatory but it has everything I need to freshen up during my flight.
Noun breakfast, lunch, or dinner provided to passengers on a plane
meal service
Meal service on long-haul flights give us some of everything. I certainly won't go hungry!
Adjective lacking good manners
rude
It's rude to kick or tap the seat in front of you!
Noun sudden, violent movements of air
turbulence
The captain told us the plane could drop altitude quickly during the turbulence. No worries!