Bottles and airplan

[finland]

I have a longhaul flight coming up with my 11 month old. Combined with a 6 hour train journey I think he will need 4 bottles for the journey. Does anyone know if airlines will clean your bottles for you? Was hoping to get disposables but they all seem sold out at moment. Any advice of what anyone has done is much appreciated!

As long as your child isn't ill in anyway I would just rinse with bottled water at 11 months they shouldn't be too susceptible to bugs and as long as you rinse after use then they won't be breeding too many nasty's - you could ask for a cup of boiling water to rinse but this might be a bit of a faff