Originally Posted by
fqtv_kraven
Does UA make any problems at the CKI when there is no infant to check-in, just the main traveler?
Nope, no problem at all (domestically). I've had first hand-knowledge doing this 4-5 times in the past year, and never had even the slightest issue. However, I can't speak to the international situation, wherein the baby would have a ticket number (10% ticket plus tax).
In my case, what would typically happen domestically is that my wife and I would book onto the same PNR with the baby as a lap child. SHARES would come along and auto-split the res. My wife would look at her res and not see the baby on the res, so she'd call UA and they'd add the baby to her res. Of course, SHARES had decided to put the baby with me, so the case would be that at the time of check-in, my wife would have her res+lap child, and I'd have my separate res + lap child, even though there was only one lap child (N=3 in total). We never had any problem at all.
If you don't mind sending me a PM explaining how it's cheaper with a lap child, I'd love to know. Does it possibly have something to do with a flight credit tied to one particular person plus a lap child, and the only way to use the credit to keep the passenger + lap child on the new res?