https://promotion.lufthansa.com/cyber-monday/
The voucher can be redeemed only today, but it is valid for flights until 29 Nov 2016:
The voucher can be redeemed between 30/11/2015 and 30/11/2015.
Travel must be between 30/11/2015 and 29/11/2016.
Vouchers are only valid for itineraries where all flights are operated by Lufthansa and Lufthansa City Line.
The voucher is only valid for flights departing in Germany and can only be redeemed at
www.lufthansa.com.