Does any know if using the fan on your central A/C unit, use as much energy as when it is cooling?

Central A/C units always have the option of using the fans. Does it waste as much energy as a regular fan or does it waste a bit more or would it be the equivalent of running your cooling system non stop?
I ask this because sometimes I like to air out the house. But if there is no breeze it would be nice just to run the fan to push the trapped air out.
I don’t want to run the cooling system and push my electric bill up.