For what it's worth, my experience with Ryanair is that as long as you're outside of the season you can generally get good deals for flights a short time before. The trick is knowing what the season is. A flight from northern europe to southern europe in the middle of spring/fall might actually be sort of the in season for those flights.
But I've booked €10-€30 flights less than a week before they left.
If you want to be sure you could book 2 of those €20 flights and just cancel the one that you end up liking less. A €40 flight is still super cheap.
For what it's worth, my experience with Ryanair is that as long as you're outside of the season you can generally get good deals for flights a short time before. The trick is knowing what the season is. A flight from northern europe to southern europe in the middle of spring/fall might actually be sort of the in season for those flights.
But I've booked €10-€30 flights less than a week before they left.
If you want to be sure you could book 2 of those €20 flights and just cancel the one that you end up liking less. A €40 flight is still super cheap.