Star Trek cast dedicate film to Anton Yelchin
However, they have realised the best way to deal with the situation is to make the movie "about Anton".
He told Magic Radio: "He should still be here, but we have to make this about Anton now. And we talked about how hard it was gonna be to get out there and bang the drum for this movie when we've lost one of our family.
"But for his sake and for his memory we're gonna make it. It's something that we just now have to contend with."
Fellow Star Trek star Zachary Quinto recently described Anton's passing as a "devastating loss".
He said: "Beautiful, beautiful guy. I don't even know how to talk about it. We already knew this was going to be a bittersweet experience as a result of the loss of Leonard (Nimoy, who died in February 2015). But this has been absolutely devastating for all of us. I think our goal just has to be to celebrate his incredible life and honour him. It was a terrible loss, not only to us but to audiences and the industry."