Updated - June 21, 2016 One nursing mom reported that Sacramento International Airport now offer traveling breastfeeding and breastpumping mothers a dedicated nursing mothers room located in Terminal B.
It's equipped with Chair, Table, Changing Pads, power outlet for your electric breastpump, and a sink. It's accessible by one person at a time, so there still might be delays if the line is long. This is a huge improvement.
Other options (Not dedicated or entirely private) There are family rooms located in Terminal A, but these rooms are not limited to moms only so dads and other family members might be in and out.
Contact the phone number listed here for help in finding other quiet and private spaces to temporarily serve as a place to breastfeed your baby at the airport if the nursing room has a long delay.
Note: California law gives moms the right to openly breastfeed in public or private places wherever they feel comfortable without prosecution.