The five European microstates have no airport within their boundaries, though San Marino does have a small airfield with a grass runway.
For Liechtenstein, San Marino and Vatican City only flights inside the Schengen Area are allowed, due to a lack of border controls.
[9] The heliport has a Schengen border control, so it is possible to fly from e.g. London or Tunis, although this will take a few hours, and few helicopters have such range.
Vatican City has no airport and is too small to contain one; the Holy See has a land area of 0.44 km2 (0.17 sq mi), and a maximum width of 900 m (3,000 ft).
[13] However, it does have Vatican City Heliport in the western corner, which is used for visiting heads and officials of the city-state.