Police identified the woman Monday as Jenny Gamez, of Cottage Grove, Oregon. Local investigators say she disappeared in 2012.
The suitcases were found on June 5 in the Town of Geneva, Wisconsin. Police Chief Steven Hurley says Gamez had told her family she was moving, so they didn't realize she had disappeared.
Walworth County Undersheriff Kurt Picknell says Gamez was identified with dental records. He declined to say how investigators made the link between the remains found in Wisconsin and her disappearance.
Investigators have charged 52-year-old Steven Zelich with two counts of hiding a corpse in the case. Authorities say he met both women online.