Flying with 10 week old

You will be fine! His ears should be OK too especially if you breastfeed. And I have found that
a) Young babies tend to sleep most of the flight
b) People are actually much nicer than you think about babies - and if they are not - well its THEIR problem!
I have breastfed on loads of flights now and nobody has given me a funny look yet
- Try and get an aisle seat and if he has a dummy - get a strap to keep the dummy on him. (speaking from the experience of climbing under seats to recover a dummy with a five week old!)

Oh I traveled with my boy in a moby wrap while flying and he loved the closness to mummy and slept feeling all snug so that could also help too.

I flew to Perth with my girl at 8 weeks, and she slept most of the way there and back, so no need to feed during takeoff and landing. She cried for 20min all up both there and back thank goodness, so luckily I didn't worry too much about other passengers. I preferred to have a window seat, so I could BF semi-privately.. It can get quite cold on the plane too so I made sure she was well wrapped and held her the whole way
Good luck!