Mums, taking my LO on her first holiday. She is 3 months old. How do I ensure she does not fall sick on the plane?

In addition to the advice above, planes also tend to be super cold. So bundle her up in full length onesies, and carry a warm blanket and possibly a cap as well. My son was ok on take off and landing but many parenting forums recommend feeding the baby so reduce the impact of pressure on their ears.