Cheap flight sites....

[Pleatfooted]

Try opodo flights ......they bundle flights together irrespective of the airline .....so you could fly out with Monarch and back with EasyJet etc.and they'll get you the cheapest price doing that

Skyscanner do exactly this mate

 

[City_Sean]

Cheapoair.co.uk

 

[feedthegoat27]

Google.co.uk/flights.

Great tool for playing about on, and an excellent site if you have a more complex flight requirement than a bog standard return.