I know Wizz Air divides opinion, but even if you only very occasionally fly with them, the Wizz Air Discount Club is well worth a look. Why? Well first up there is the outright saving on the airfare (guaranteed minimum of €10), but more pressingly they offer very regular offers of 25% (or more) off fares for Discount Club members. These sales are rarely extended to the public at large. I only fly Wizz a few times yearly, but have saved a fortune through the Discount Club.