Thanks @Jenny
Baby carrier?
I always took my boppy on the plane and then I would just clip it to the outside of my backpack when I wasn’t using it. I did just see a Instagram video where someone said they sell a specific travel boppy that is a smaller size
A rolled up hoody, cardi or jumper can be comfy and cushion the armrests. I’ve also used a normal travel pillow to help with breastfeeding on a plane. Whilst on holiday a rolled up towel can help or ask for extra pillows/cushions from your hotel.