You got to put cotton balls in baby's ears

Feed him before landing and take off. Will ease the pressure

Yes dear this commom .. 
You have to keep feeding the baby while take off and touch down ... 
This helps in the jaw movements which eases air pressure ...you yourself can also chew gum to ease ... 
Since the babies ear drums are tender the uneasiness makes them to cry...

When i travel in flight my baby develops air pressure and he started crying half an hour before landing ...what is the solution...?