Some of the UK airlines would only let you book tickets starting from the UK in the past. It was because they were principally package tour companies. Maybe best to call Edelweiss.
Some of the UK airlines would only let you book tickets starting from the UK in the past. It was because they were principally package tour companies. Maybe best to call Edelweiss.
I circumvented that once by using a VPN. The ticketing website saw my Dominican IP and stopped me buying a round ticket from the DR to UK. When I "went"to UK via a VPN it allowed be to buy that round trip ticket.
Admittedly it was with Thomas Cook who are no longer operating. but might be worth a try to see if you can get a Swiss IP using a VPN.