I havent got a baby myself.
But we took my nephew on holiday this christmas to australia, he was just under 1 at the time. he travelled amazingly as he just slept most of the way.
He didnt get on with the heat, but it was in the high 30s!
I would reccomend that if you go away, try going may time or sep or oct as they are cooler than the summer months. And maybe go to spain, or a canary island as they are both not to far to go.
xxx