So far, nothing has been announced about a second "Commuter" film with Neeson reprising his role. And there are various reasons why "The Commuter," despite being commercially successful, hasn't spawned a second installment almost a half decade later.
One factor is that Neeson's action films, save for the "Taken" series, don't usually receive sequels. The scripts usually bring the characters to a natural conclusion that don't demand more adventures. Audiences are also more loyal to Neeson as a star, not to the people he's playing. They expect a certain kind of fun action film from the actor, even if he's a different character each time.
Neeson is getting older too, and he's indicated that he's ready to hang up his prop guns after 15 years of making thrillers. When asked about retirement from action films in early 2021, he told Entertainment Tonight, "Oh, yeah. I think so, I'm 68 and a half. 69 this year."
"The Commuter" also did well internationally, but it only made $36 million in the United States (Box Office Mojo). Because studios make more from domestic box office (via Investopedia), that number just doesn't sound great to Lionsgate even if they made a profit on the film overall. Ultimately, "The Commuter" will likely remain a standalone film.
