For many years, the Swiss AF did hardly ever had any foreign visitors to its bases. With the changes in Europe in the last decade or so, this has changed. Since 1993, the Swiss Air Force participated in more than 40 training session abroad. Details on the participation of the Swiss AF in international exercises can be found here.
Sometimes, the Swiss Air Force has to use facilities abroad due to airspace restrictions in Switzerland. Tests were conducted in Sweden – these tests started in the mid-sixties of the last century. In the eighties, the Swiss Air Force operated out of Decimomannu for few weeks to train air-defense operations without speed restrictions (SAKA). These operations were later transferred to the UK under the name of NORKA. Towards the turn of the century, the ranges over the North See became unavailable and so the Swiss Air Force started with the NIGHTWAY campaign which saw aircraft to deploy to Norway.
For the first time in its history, foreign aircraft were used as the Swiss AF did not have enough assets of its own. The Spanish AF did lease some CN.235 for use with the Swiss AF in support to the operations in Albania.
Also in 1999, the Swiss AF had its first "real" Squadron Exchange with the Austrian AF. Details on training exercises with other air forces can be found here.
In 2000, several foreign ECM-aircraft landed at Dubendorf in connection with the bi-annually meeting of the "Association of Old Crows". Amongst the visitors was a C-160G Transall "Gabrielle" – one of two assigned to EE.54.
Details on operations abroad outside of exercises can be found here.