Unless you fly as often as pilots and other onboard staff, it's unlikely to be significant.

If flying were invented today, I bet it wouldn't be allowed due to the radiation. It's more than many medical procedures which guidelines say to only do when the medical benefits outweigh the radiation risk.

I suppose if flying were invented today the plane would have no windows and the pilots would use cameras.

Clearly the benefits of flying outweight the radiation risks, though.