Open sky refers to an agreement between two countries to allow any number of airlines to fly from either of them without any restriction on number of flights, number of destinations, number of seats, price and so on.
As per National Civil Aviation Policy 2016, Government has planned to enter into an ‘Open Sky’ Air Service Agreement on a reciprocal basis with SAARC countries and countries with territory located entirely beyond a 5000 km radius from New Delhi.
So far, India signed open sky agreement with Greece, Japan, Jamaica, Guyana, Czech Republic, Finland, Spain and Sri Lanka. India and US had signed bilateral open sky agreement in 2005. India also had signed open sky agreement with the 10-member Association of South East Asian Nations (ASEAN) in 2003.