Still operating in 1941, Lufthansa flight 8 nonstop Stockholm to Berlin. Need to overnight there, then their flight K22 which operated Berlin-Stuttgart-Lyon-Marseille-Madrid-Lisbon, taking all day inevitably. Thence ship to Colombia. Junkers 52 on both flights. These flights (and flight numbers) had been running from pre-war days. Not apparent how they actually ran compared to the published timetable, nor how civilians were accepted.
Swedish America Line passenger ships to the USA, despite both being neutral, had been given up in 1939.