While there's no recent news confirming a specific incident of Rishi Kapoor and Neetu Kapoor fighting on a flight as described in the title, here's a look at their relationship, based on available information.
Rishi Kapoor and Neetu Singh, later Neetu Kapoor, were a celebrated Bollywood couple. They married in 1980 and have two children: Ranbir and Riddhima Kapoor. Rishi Kapoor passed away on April 30, 2020. Their relationship, like many, had its complexities.
Ranbir Kapoor has spoken about witnessing frequent fights between his parents during his childhood. He described his early life as a "fire zone," recalling staying up late as his parents argued. However, Ranbir also mentioned that his parents eventually reconciled, understanding the value of their love and companionship.
Neetu Kapoor herself addressed Rishi Kapoor's rumored infidelities, admitting she had caught him flirting many times. She even stated that she used to fight with him about it but later adopted a more accepting attitude.
An anecdote shared by Vir Das highlights Rishi Kapoor's personality. Das, who worked with Rishi Kapoor and Katrina Kaif in "Namastey London," recounted an incident where Kapoor gave him acting advice and his blessing. Das also humorously mentioned an incident where Kapoor and Kaif left him to film his close-up in the sun.