WNBA
Bonner was selected fifth overall in the 2009 WNBA draft by the Phoenix Mercury. In her first regular season game with the Mercury, Bonner played 26 minutes and scored 16 points. She won a championship with the Mercury during her rookie season.
On September 12, 2014, Bonner won her second WNBA Championship with the Mercury, scoring 12 points, 9 rebounds and 3 assists in the clinching game.
In 2017, Bonner sat out the season due to pregnancy. She returned to the team in 2018 and was voted into the 2018 WNBA All-Star Game. The Mercury made the 2018 playoffs as the fifth seed and were one game away from reaching the finals as they lost in five games to the Seattle Storm in the semi-finals.
On February 11, 2020, Bonner was traded to the Connecticut Sun in exchange for three first-round draft picks.
On February 2, 2025, Bonner signed a one-year contract with the Indiana Fever. On May 17, in her regular season debut for the Fever, Bonner became the number three all-time leading scorer in the WNBA, passing Tina Thompson. Bonner started the first three games of the season, but she came off the bench for the following six games (with Lexie Hull getting the starting nod). After the Fever's June 13 game, Bonner was listed on injury reports as unavailable due to "personal reasons." On June 24, it was reported by Annie Costabile from multiple sources that Bonner "[had] no interest in returning to play for the Fever." The next day, the Fever announced that they had waived Bonner, who in her own words stated she "felt the fit did not work out" and she preferred to play for teams such as the Phoenix Mercury or the Atlanta Dream. Fever general manager Amber Cox spoke to the press on June 26 and stated that Bonner expressed her dissatisfaction "nine, ten games [into the season]" and that equal trade opportunities were sought but no suitable trade options were found, which resulted in Bonner's being waived.
Bonner returned to the Mercury on July 8, 2025. She was described by the Associated Press as "instrumental" in helping the Mercury to qualify for the 2025 WNBA Finals, and was re-signed by the team in April 2026.
On August 24th, 2026, after being officially eliminated from playoff contention, the Mercury announced they would buyout the remainder of Bonner's contract to allow her to become an unrestricted free agent. Bonner signed with the Atlanta Dream on August 27th.