Exchange Tesco vouchers for double the value off Monarch flights.
Exchange £10 in Clubcard vouchers for £20 off new sun & Ski routes from Monarch. This includes great routes to places like Munich, Nice and everywhere Monarch flies in Italy.
Offer ends 31 August 2012 and is valid for travel between 1 Sept 2012 and 30 Apr 2013
I did this earlier in the year, if I remember correctly the offer was slightly better then too.