The arrest comes as hundreds of Extinction Rebellion demonstrators are attempting to shut down the airport.
A plane has returned to the terminal of London City Airport after a climate change protester disrupted the flight, according to Sky sources.
Pictures show the protester being arrested by police before he was led off the plane.
The arrest comes as hundreds of demonstrators are attempting to shut down the airport in protest against the climate impact of flying.
Extinction Rebellion activists are beginning what they call a three-day “Hong Kong-style occupation of the terminal building”.
Several other arrests have been made at the airport where some protesters have glued themselves to the floor.
Footage shared by Twitter user Warren Swalbe shows a demonstrator on a plane on the runway.
The protester can be heard telling an air hostess: “I don’t wish to travel with you but I don’t wish to get off.”
He adds: “I’m extremely sorry for the inconvenience.”
A passenger off-camera is then heard saying to the air hostess: “Can you do us all a favour and remove him from the plane?”
The protester then continues: “We have two generations of human civilisation left if we carry on doing what we’re doing.”
Mr Swalbe shared another photo that showed police arresting the demonstrator.
Extinction Rebellion said earlier that it intended to “peacefully occupy and shut down” the airport’s terminal building from 9am on Thursday.
The Metropolitan Police is yet to give an exact figure for how many protesters have been arrested.