google has info on flights go to google.com/flights you put in the useual things and then it will show you the various prices starting wiht the cheapest - but this is only for the major airlines.
But on the bottom right hand side there is a little bar graph icon - click on that and it will show you the cheapest price it has for each day and you can scroll across the month - be aware that something as small and extending the trip by a day or 2 can change the price up or down so going from a 7 day to a 8 day trip might save money
I usually find a Friday afternoon flight so my trip is 15 days rather than 14 days
Good Luck
Have fun
dawrcm got a reaction from Chene in plane tickets