Indeed not part of the EU but:
The decision was made by the Council of Ministers in 1994 that the Isle of Man would not legislate against complying with the Liberalised Air transport Market. This allows certificated airlines to fly in any EU market subject only to market forces (the ‘Open Skies Policy’).
Reviewed in 2008:
It therefore remains within the Isle of Man Government Strategic Plan to continue to adopt the regulatory position of “Open Skies”, in terms of Air Transport Licensing, thus providing free access for airlines with an ‘Operating License’ to fly air service routes from the Island.