Talk

drink with a straw?

Water in a sports bottle

Breadsticks to chew

It's the sucking/swallowing that clears your ears. Can you find some sort of swizzle stick that she can suck on? Like kids who still suck on the lollipop stick once the lolliepop is finished.

Maybe ask the flight hostess if they have ice?

For myself, I've found that yawning is the best thing. Don't know if it will work for her.

Brilliant thanks for the ideas.
I am stressing about flying with her as it will be 1st time I have travelled alone with a child do far.
I gave to get connecting flights and due to circumstances I will be quite emotional so need things to be easy without small ine adding to my stress.

Sugar free sweets, widely available, though laxative in excess! Sugar free gum. Not all kids suffer with their ears. I remember it being awful as a child but DS aged 2.6 was fine when we last flew.

Sugar free chewing gum. The chewing action plus swallowing saliva is far more effective than anything else I have tried.