When I flew as a child (mainly on Brittania Airways flights) I used to get ear ache badly especially in the descent phase.
The cabin crew would supply me with what they called 'hot cups'. These were the plastic drinking cups you would usually be served drinks in during a flight. In the bottom of the cups was cotton wool soaked in very hot water.
Placing these over the ears is very effective at reducing ear ache - it may look a little odd, but to someone who is suffering, they don't usually care!!
I hope this helps.