While there may not be one standard size for flyers, we recommend sticking to A4 size sheets of paper. This will lower printing costs, and volume of printing and trimming. Three DL flyers, or four A6 size flyers fit exactly on a sheet of A4 paper. These are the most common sizes. AS is used for larger flyers, and can fit 2 of these on an A4 sheet. However, we can print just about any size.