After graduating from the London College of Communication in 2012 with a Bachelor of Arts in filmmaking, Wright founded her own production company, BonBonLumiere, and began to produce short films.

[7] In 1999, castings were held across the UK for Harry Potter and the Philosopher's Stone, the film adaptation of British author J. K. Rowling's best-selling novel.

[5] She gained a screen test for David Heyman after her pictures were sent to the film's casting directors, and her parents were told she got the role shortly after.

In 2002 and 2004, Wright co-starred in two television films: Stranded (2002), a period piece, and Agatha Christie: A Life in Pictures (2004), where she played the younger version of the titular writer.

[15]As Ginny, she appeared more prominently in Harry Potter and the Order of the Phoenix (2007), joining Dumbledore's Army and eventually participating in the climactic scene, battling against Lord Voldemort and the Death Eaters.

[18] In 2007, Wright guest starred on the Disney Channel's The Replacements, where she voiced Vanessa in the second-season premiere titled "London Calling".

Wright is one of the thirteen actors who have appeared in all eight films of the Harry Potter franchise, being part of the cast members Rowling referred to as "The Big Seven".

[32] The Sea received mixed reviews; one critic wrote that Wright was an "underused but ultimately ineffective screen presence".

[49] Reviews for After the Dark were mixed; The Village Voice commented that the film "slid[es] into a ... soapy backstory while suggesting that supporting actress Bonnie Wright might have been a stronger [..] lead".

[52][53][non-primary source needed] In July 2014, Wright directed the short film Fade to Gold, showcasing her parents' creative design of their jewellery.

[54][55] In August 2016, her company released the first instalment of Sextant, a twelve-part work with each short shot under a full moon, containing themes of cosmic order and poetry.

[59] The film was shot in Lincoln, England, and starred Kerry Fox as a woman experiencing a menopausal midlife crisis, alongside Harry Potter co-star Jason Isaacs as a charismatic, "self obsessed" hairdresser with whom she develops a fraught connection.

[61] Wright also directed the music video for Pete Yorn and Scarlett Johansson's single, "Iguana Bird", an "expressive personification of heartbreak recovery", released in October 2018.

[63] In March 2020, Wright narrated an audiobook adaption of Babbitty Rabbitty and her Cackling Stump from The Tales of Beedle the Bard, an in-universe book of Wizarding World children's stories written by Rowling.

[66][67] In January 2018, she visited the Coca-Cola headquarters in Atlanta, Georgia, to deliver a petition to urge them to stop producing single-use plastic.

[69] In February 2020, Wright, as an ambassador of the Rainforest Alliance, travelled to Guatemala to meet communities that practice sustainable forest management in the Maya Biosphere Reserve.

During the trip, she met staff in Uaxactun, a community that the Rainforest Alliance has been working with for more than 20 years to promote practices of sustainable forest management.

"[73] In 2021, Wright, along with other Harry Potter co-stars Evanna Lynch, Mark Williams, and Devon Murray, attended the 2021 Stuttgart Comic Con, where they did meet-and-greets with fans.

[74][75] In April 2022, Wright published and wrote a book titled, Go Gently: Actionable Steps to Nurture Yourself and the Planet, where it tells about the importance and tips of how to save the environment.

[76][77] In October 2023, Wright signed the Artists4Ceasefire open letter calling for ceasefire during the Israeli military response to the Hamas attack on Israel.

[80] In August 2013, Wright participated, along with Phoebe Collings James and Clara Paget, with jewellery designer Dominic Jones modelling southsea deckchairs in aid of the World Land Trust and Winchester School of Art charities.