Fine or imprisonment: What happens if you open emergency door of a flight?

The passengers can only open the door when the flight is grounded as cabin pressure makes it impossible for the passenger to open the emergency door when the flight is mid-air

A passenger in an IndiGo flight between Nagpur and Mumbai reportedly tried to remove the cover of the emergency exit on January 24 and has been booked by the police. This is the second such instance in the past two months. On December 10, BJP member of Parliament (MP) Tejaswi Surya opened the emergency door on a Chennai-Tiruchirappalli IndiGo flight.

In the case of the former flight, the passenger was "appropriately cautioned" by the crew.

Can an air passenger open the emergency door?

The passengers can only open the door when the flight is grounded. Cabin pressure makes it impossible