Originally Posted by
LilAbner
The OP made a mistake and some on here need to be reminded that if the kid gets to go with mom and dad it will cost money, PERIOD.
Not PERIOD, on purely domestic tickets the lap infant flies free with no ticket needed. If that is the only exposure someone had to flying with a lap infant it is very easy to believe international would be no different if the web doesn't advise you when you are getting your tickets. This is purely a UA web glitch with no fault on the OP's part.