Originally Posted by
howbigmassive
This is not true. The *A RTW terms and conditions only state that the 'ticket is not valid if the first coupon has not been used and will not be honoured if all the coupons are not used in the sequence provided in the ticket.'
LH Terms & Conditions - General Conditions of Carriage (Passenger and Baggage):
3.3.4.1. In the event that you do not use the return trip shown on the Ticket, and Art. 3.2.3. not withstanding, we shall recalculate and demand the price in accordance with the one way fare for the leg actually flown valid at the time of first issuance of the Ticket.