You'll probably want to have at least one extra fitted sheet for the inevitable night time diaper explosion. (thespruce.com)
With enough time before your flight, you'll also be able to visit the bathroom to change your baby before hopping on the airplane to avoid any aforementioned diaper explosions. (rookiemoms.com)
The third drawer is full of chux pads which are used in the hospital, and are a necessity for all sorts of child - rearing issues whether baby diaper explosions in the bed, milk leaking through the night, fearing my water will break on the mattress, or even bed wetting in my older boys (maybe even for heavy menses and of course, postpartum bleeding). (believemidwiferyservices.com)