I always fly to the greek island Crete. Its where i met my husband. We're going back again in august. I only ever book one way. www.xl.com is the best....check it out cos i think they go to ibiza too. and jet2.com looks good but nvr tried it. with xl.com i have found to fly to greece cheapest, and its better if u wait until closer the date and then save loads. I'm flying with www.flythomascook.com i found really cheap one way flights to crete. sometimes buying return costs a fortune. hopefully helpful x