Can you fly with ear infection?

Yes but wouldn't: You can fly with an ear infection but there is a significant chance that you will have severe ear pain or rupture of the ear drum on descent.

Not recommended: Ear infections are inflammatory processes so flying and changing pressure in flight will most likely cause a great deal of pain. It can also cause the inflammation to worse, possibly cause the ear drum to rupture or cause further local damage. If you have questions definitely see a specialist.