ngc1514 wrote:
If you had a filter on the lens, try removing it and see if that eliminates, or decreases, the amount of flare.
Some lenses are more prone to flare when shooting into the sun. If you have other lenses in the bag, give them a try and see if it helps.
I agree, flare will result when light reflects off the lense to the back of the filter then back throug the lense.