Laflin grew up in San Francisco, California, the daughter of a law enforcement officer father. She first gained public attention as a cheerleader with the Golden State Warriors of the NBA and is a former San Francisco 49ers and Dallas Cowboys Cheerleader in the National Football League. Laflin's work as a cheerleader and model helped her into television with recurring roles on Baywatch in the 1998–1999 season and Ally McBeal in 2000. She then became a TV personality, hosting Hotlines and United Rockcrawling & Off-Road Challenge Series. Laflin was also a correspondent for Prime 9 News with KCAL-TV in Los Angeles, California,, and a correspondent for ESPN's Cold Pizza. Her accolades in the sports industry also include broadcasting jobs for CBS, Fox and NFL Network. She is the creator and host of a basketball TV show for China, Muho TV. She also appeared on To Tell the Truth in 2017Laflin played Dierks Bentley's love interest in CMT's 2005 Sexiest Video of the Year, "Come a Little Closer". In 2005, she appeared as one of the suitcase-holding models during the airing of the opening week of Deal or No Deal on NBC. Laflin was ranked #89 on the Maxim Hot 100 Women of 2005. She has also worked as a model for Frederick's of Hollywood and Venus Swimwear, and her print campaigns include Coors Light, Bacardi, Wrangler, FedEx, and McDonald's. Laflin has been featured in several magazines including FHM, Maxim, GQ, Sports Illustrated, ESPN the Magazine, Women's Health, Fitness RX, Origin and New Beauty. She was named among the Top Hooters Girls as part of the restaurant chain's 25th anniversary in 2008. Laflin was a cast member on season 6 of VH1's Basketball Wives. Laflin has worked with the Los Angeles Lakers as a professional basketball scout, making her the league's first female scout, and as one of the two assistant general managers of the Lakers' developmental team, the Los Angeles D-Fenders. On March 7, 2012, she announced that she and Kareem Rush would pair up in a fantasy basketball sports radio program on SiriusXM named The Rush Hour. The show launched on October 23, 2012; the show was renewed for 2013. In 2013, she appeared as an in-studio guest on KNBR's Damon Bruce Show, once to discuss the San Francisco 49ers' run to Super Bowl XLVII, and another time to discuss Bay Area sports in general. She also appeared on the show, now on KGMZ, in October 2014 at Kansas City's Kauffman Stadium to discuss the San Francisco Giants' 2014 World Series run. Laflin's other radio shows include Playboy Fantasy Football on Sirius/XM and University of Texas pre- and post-football game shows for ESPN Austin. Laflin has appeared on the ABC game show To Tell The Truth. Laflin currently hosts "Bonnie-Jill Laflin's The Weekly Pass" on Afterbuzz TV, the first ever sports show on the network. Since September 2018 she is now a regular host on KNBR's Murph and Mac show. As of March 2019 she is concurrently also a television on air host and reporter for NBC Sports Bay Area.