What age for iPad?

We do not allow our baby (currently 10 months) any screen time and don’t plan to.

However after the worst flight of our lives from LA to Vietnam, we will consider giving her an iPad for the next flight. Our next 20 hour flight will be when she’s 21 months old.

My question is, at what age do babies/toddlers begin to actually watch an iPad so that they are not incessantly crying/throwing a tantrum?

Because I swear I can’t do another 20 hour flight from hell again, it was so hard.

Edit: to people giving me screen time advice, do you not see my comment above that I don’t plan on giving my child an iPad except for 1 time travel a year omg. We fly business so I’m not gonna let my child ruin the trip for others, it’s highly stressful. I’m asking for advice - thank you in advance y’all 😭😭😭