If you want flight only then no, Scheduled flights do not come down the nearer you get(usually) Airlines do have sales but not normally for August.
We once flew with 1 day notice to Florida in August, ended up using TCD and paid more than if we had booked 11 months out.
Very difficult geting good prices for August. I am even considering indirect flights from Heathrow next August as I can save over £600 (£200 each) compared to Manchester direct.
Can't help with packages, too expensive for us.