Flew with 2 kids under 3yo return trip to USA.

1. Bring those baby food in sealed jars. Sometimes, the airline themselves have some too.

2. Ask for left or right most row of seats. In our case we got 3 in a row. Take the blanket and spread on the floor, also bring pillows or ask for pillows to cover sharp corners. Let them play/lie/sleep on the floor when no turbulence.

3. Diaper cleaning is messy. Bring spare clothes.

4. Bring QUIET toys.