My friend is taking her 10 week old to germany. As long as there is no medical reason not to should be ok, definately have a something for sucking on.
I'm booked to go to florida when ruby is 4 months old (on my own with DD1, mad I know) hopefully i'll still be BF so can just stick her on the booby. Also have a cot booked so she's not sitting on me the whole way.