The main cast of the Chinese drama "When I Fly Towards You" includes:

• Zhou Yiran as Zhang Lurang: The male lead, a top student with academic excellence but some personal struggles.
• Zhang Miaoyi as Su Zaizai: The female lead, a cheerful transfer student who falls in love with Zhang Lurang at first sight.
• Bian Tianyang as Gu Ran: Zhang Lurang's best friend who later develops feelings for Jiang Jia.
• Jiang Zhinan as Jiang Jia: Su Zaizai's best friend who falls in love with Gu Ran.
• Guo Zhe as Guan Fang: A part of the friend group.
• Xie Xingyang as Xie Lin Nan: Su Zaizai's senior and president of her department.
• Gao Wenfeng as Lin Mao: Zhang Lurang's uncle and a math teacher.
• Zhang Lei as Su Jian Hua: Su Zaizai's father.
• Chen Sisi as Zhou Xiaoli: Su Zaizai's mother.
• Hao Wenting as Lin Yun: Zhang Lurang's mother.
• Wang Muxuan as Zhu Miao: Support role.
• Wang Jiaxuan as Zhang Luli: Zhang Lurang's younger brother.

The cast features a mix of main and supporting roles with a focus on high school friendships, romance, and personal growth in the drama's story.