By the way, every miles program is diffrent. Most programes charge 10% of the full fare for the baby. I think thats really not fair, since the full fare is miles. But never mind, we cant change that.
Air Canada has a flat fee of 100 USD for infants, no matter were and what booking class. Miles and more charges only the tax, since they cant charge 10% of the miles.
Most airlines let kids in F. I think its not right, since if a guy pays fullfare 10000 USD he wants to be able to sleep. My opinion is, the airlines should let in business, but not first. First should be exclusive with a "sleeping" no noise guarantee.
I once took my 6 month from JFK-Zrh in business and have to admit, I really felt like an indruter, every time he screamed everybody started looking. I didnt feel comfortable at all. But it was not my fault, we got upgraded
Best advice, when your kid screams in business or First, just walk back to Economy and wait there till he is quiet again :-) :-)