If you can wait, between Black Friday (which this year falls on November 25th) and Cyber Monday (November 28th) is usually when the best deals on laptops appear, though early Black Friday laptop deals appear throughout November.
That being said, Amazon Prime Day sales (July 12th -13th) and US Labor Day sales (the week before September 5th) are also great times to pick up laptop deals earlier in the year, and you can usually also find some good offers in the January sales.