We got fairly cheap flights for July/August by joining virgin flying club and using virgin airmiles (miles plus money) you can also buy airmiles if you dont quite have enough OR there is always their credit card which gives you airmiles as you spend (just as long as you pay it off each month!!) any way our flights were £1700 for 2 adults and 2 kids which for the six weeks holidays I didnt think was too bad.