Wizzair do these deals every so often and thought I would let you know, as just received an email from them.
On Thursday 21st March 2013, the airline is offering 20% discount off all flights to all destinations.
EDIT - Sale now been extended running till Friday 22nd March...
Nearly all their destinations are to Eastern and Central Europe, including ideal destinations for a City Break, like Prague and Budapest. Also if you want an alternative summer sun beach destination that is different to Spain or Greece, they fly to the Bulgarian Black Sea cities of Varna and Bourgas and also to Split on the Adriatic coast in Croatia.
I have flown them numerous times from Luton, and found them very good... Nice modern Airbus A320 aircraft (if however painted a little bright), comfy seating and very friendly crew. They have always been on time for me too.
The airline is a low cost carrier, similar to easyJet and Ryanair, so there can be the usual additional fees, like when paying by credit card or taking large hand baggage/checked in bags.
Im sure there will be some usual moaners complaining about the airlines additional fees and about what is and what's not included, but that is the way the Low Cost Airline industry works! I'll leave that for those individuals to compain about below.
Destinations Flown from London-Luton
Destinations Flown from Liverpool
Destinations Flown from Doncaster-Robin Hood
Destinations Flown from Glasgow
EDIT - Just had an email from Wizzair, advising the sale is now running until Friday 22nd March!