Howdy and welcome to the forum Jboldman. In the years prior to World War II, the company developed into one of the world's leading airlines, pioneering routes to the Far East and across the North and South Atlantic, using a large fleet of mostly Dornier, Junkers, Heinkel, Focke-Wulf and other German-designed aircraft. After the outbreak of war in 1939, Lufthansa was only able to maintain service to neutral countries, and suspended service following Germany's defeat in 1945. Early in the war, along with the Italian Transcontinental Airline (
Linee Aeree Transcontinentali Italiane, or LATI), the company competed vigorously in
South America. There was a Lufthansa service from Lisbon to Buenos Aires using FW200 Condors.
Internationally, Pan Am and Lufthansa were the top two airlines. Swiss Air suspended their scheduled flights on Aug 1940 and resumed after the surrender of Germany
I don't believe there were any Neutral airlines flying into any German held countries. Only way to go form London to Switzerland would be to take a British Airways Ltd (not the current British Airways) service into Lisbon, Portugal and then a train to Switzerland.
Good luck on your project
Lufthansa - Wikipedia, the free encyclopedia
Lufthansa <DeutscheLufthansa>
British Airways Ltd. - Wikipedia, the free encyclopedia.