Flying and pregnant. When do airline restrictions kick in?

[Mummy_AllyK]

I'm fairly certain 28 weeks onwards, but if you "look" too pregnant you can't prove how far you are without one anyway. I personally would get one just in case, then if they ask for one you have it already :-)

[Liviam]

Always call and ask each individual airline you are thinking of flying with because they are all different.