If you blew all your money on back-to-school here are three things you should be able to save some money on in September.

1.  Mattresses.  They’re always a popular sale item for Labor Day, along with other furniture and appliances.

2.  iPhones.  We just heard the new ones come out September 12th, so you should be able to score last year’s models at a discount.

3.  Plane tickets.  According to a study on holiday airfare, prices for plane tickets over Thanksgiving and Christmas will increase throughout October, November, and December.  So if you can book now, do it.  

And a couple items you should HOLD OFF on buying are:  TVs . . . the prices are better November for Black Friday and January for Super Bowl . . . and Halloween costumes, which will get marked down the closer it gets to October 31st.