Tips for flying with a toddler

Ki

I’m after your tips for flying with a toddler! I’m flying from Australia to the US (15 hour flight) next month, with my 2.5 year old daughter. Hubby isn’t coming, will have my parents with me on the way there, but not on the return flight. PLUS, I’ll be 20 weeks pregnant!!

So I’m after your best travel tips! What are my must haves for the plane? What will just be wasted space in my carry on? Is it ok to take play doh on the plane?