The Aer Lingus flight to Dublin was getting ready to leave London City Airport on Thursday when a passenger stood up to deliver a message, bringing the so-called flight-shame movement directly to travelers.
18,000 passengers are due to arrive or depart from the airport, with 286 flights scheduled. As part of their disruptive actions, a man on board an Aer Lingus plane bound for Dublin refused to sit as the flight prepared to take off, resulting in the plane being grounded while the crew waited for police to remove him. The flight left about 1 1/2 hours late at 11:16 a.m.
Hundreds of police officers from across England and Wales have been drafted into London to deal with a fourth day of climate change protests.
The video shows a smartly-dressed man walking up the aisle just before take-off.
"We need to encourage people to fly less", the woman said.
'I'd like to thank groups like the Climate Strikers and Extinction Rebellion for educating us and pushing the issue to the top of the agenda'. Her video stream ended after about 22 minutes when police told her she was under arrest on suspicion of aiding and abetting the endangerment of an aircraft - apparently for helping the man get a ticket - and public nuisance.
To applause from an audience of Labour activists he said: Those women that stood up for the right of women to vote, the suffragettes, were condemned mercilessly by nearly every newspaper int he country, and they are now on postage stamps.
"Metropolitan Police are in attendance and we are working with all partners to investigate, and ensure the safe and secure continuation of service", the update said, adding that "a number" of protesters were still outside the front of the terminal.
Metropolitan Police deputy assistant commissioner Laurence Taylor said "some interesting attempts" had been made to disrupt flights.
Extinction Rebellion had vowed to continue targeting the airport until Saturday evening - and to wind down their global action only at the end of next week.
The Labour leader spoke out after demonstrations in the capital and other parts of the United Kingdom escalated into a three-day Hong Kong-style protest.