Ryanair fly from most parts of the UK into Reus, Please go to ryanair.com. 
Most airports fly Sat 15th, return Sat 22nd, but there are some which don't fly out on that Saturday, try it on Sunday. If you fly to Reus is 6 miles away to the venue, you can take a taxi from the airport to the venue/hotel.
You also can fly into Barcelona International, if you don’t have the Reus airport choice, go to skyscanner.net
Soon we’ll explain you how to go easily from Barcelona airport to Salou by train.