Hi keithj
Thank you for your request.
As a rule, changes and cancellations are possible up to 2 days before the transport until 8.00 pm. Please call 0848 44 66 88 (CHF 0.08/min) or +41 51 225 78 56 from abroad, my colleagues will be able to help you.
I wish you a nice Sunday.
Kind regards
NicolasK