Passengers should be aware that if they choose to get off the airplane during a tarmac delay, airlines are not required to let them back on the airplane. The flight may take off without them and passengers may be responsible for finding another flight.
Can I get off plane once boarded?
Once you have boarded the flight and want leave the plane that means, you don't want to fly. It may be for any emergency reasons and you are allowed to leave, but if you are carrying any check in baggage, that baggage is to be off loaded and identified by you. You are also required to off load with your cabin bag.
Can you get off a plane and back on?
Are you allowed to get off a plane?
If the airline determines it's safe for passengers to leave the aircraft, they must notify fliers that they can deplane. Offering to bus passengers back to the terminal after three hours is likely enough to meet air regulators' requirements, but it is not always the best option for travelers.
Is there a penalty for not taking a flight?
If you don't turn up for a flight, you will either be rebooked on another flight, charged a cancellation fee or will lose the entire value of your ticket. Which of these happen will depend on the reasons you are missing the flight, the type of flight/ticket you have booked and whether or not you inform the airline.