Originally Posted by Darren
On Finnair in Helsinki, revalidation is SOP and you will have it done every time that you don't fly on the date on the ticket.
Agreed. Finnair seems to be at the outer reaches of OneWorld. HEL is the only place I have been which insisted on stickering an open-dated ticket. This only took a couple of minutes so no more than an irritation, but it's a shame that Finnair has to be different from the rest of the alliance.