well we have just done 2 flights, my 2 year old was happy to be in his harness & when he fell asleep his head was still upright it never fell forward, he was very comfy in it, qantas staff had never seen or heard of it before i handed them the letter & the captain came up & chatted about it, the jet star flight they didn't say a thing, we still have 4 more flights to go till we arrive home so its getting good use on its 1st holiday, i highly recommend it & it was so easy & fast to install & remove & it does not cost much either... Lyn  NSW Australia