I prayed on an airplane on my seat. I could stand in the small area i have but couldn’t do Ruku or sujud, so i gestured for them. Later on I found out that the airline allows you to pray on a small private area where you can do all the pillars of the Salah. Do I need to repeat that Salah?

Ustadh AbdulAziz al-Haqqan

If he didn't ask and he could have and they would have told him then his salah is incorrect.