Question

What is "OPEN SKY" policy?

Answer 1

Open skies is an international policyconcept that calls for the liberalization of the rules and regulations of the international aviation industry—especially commercial aviation—in order to create a free-market environment for the airline industry.

Answer 2

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. However, this is a general definition. In actual practice, there are always some restrictions.