The low-cost carrier Ryanair is offering flights for €10 / £10 & up - one way incl. taxes.
Update: Ryanair has extended the sale until Monday 4th March 2013.
The sale varies between the different country landing pages. The discount applies to travel between 1st April to 25th April 2013. The booking period is until 4th March 2013.
Ryanair allows one item of cabin baggage per passenger weighing up to 10kg with maximum dimensions of 55cm x 40cm x 20cm for free. If you want to take more luggage with you, you have add £15 per person / per way to the total price. Make sure to book your checked baggage online, the fee at the airport will be much higher.
How to book?
Please compare hotel rates on HotelsCombined.com and check hotel reviews on TripAdvisor. If you want to stay in a private apartment check the current Airbnb promotion for new customers. If you're looking for a low budget accommodation I'd recommend to check out HostelBookers.com.