Ryanair have a two-day sale (book by midnight Thursday 25th September).
2 million free (1p) seats are on offer, (apparently) genuinely for free this time (no taxes, no charges, but it does seem some are charged credit card fees). This is a lot better than their usual 1p offers
For travel October to 15 November.
This is what Ryanair say:
FREE, FREE!!! This is your chance to travel to your European destination of choice totally FREE, this October to November 15th. Absolutely FREE, no taxes or charges. This sensational once in a lifetime offer, must not be missed. When we say FREE we mean it. Book immediately and avoid disappointment. Visit Ryanair.com for details of this amazing bargain giveaway!!
Seems this has now expired