Originally Posted by
geo1005
The above advice is correct. My daughter just passed the 2 year mark and we flew with her regularly out of DCA. We would always wait until the sweeps cleared the upgrades and then call in and add the lap-child to the PNR.
This is what they told me to do when I was having problems the past two years... It worked flawlessly after the fact. I called 1-2 days before if my upgrade had not cleared and sometimes they'd do it then as well. The trick is to add after the sweeps and your upgrade clears....