The lowest fares are to the Middle East where fares range in the low €2000 euro range. Asia fares start €2500, while South America can be reached for only €3000. Fares to Johannesburg are attractive as well for only €3000.
The fare sale runs until June 22 and travel must take place between July 1, 2017 and January 15, 2018, giving you ample opportunity and inventory to plan your trip. A 3 day stay is required, other than that there are no other serious restrictions.
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Related:
I have the SWISS First Class Cabin All To Myself
SWISS’ First Class Lounge in Zurich
H/T: SkyTravel.de