Peter and Susan do not return to Narnia in The Voyage of the Dawn Treader, but the reason for this is different between the books and the films.
Here’s why Peter and Susan Pevensie didn’t return for The Chronicles of Narnia: The Voyage of the Dawn Treader. The third installment of the rebooted Chronicles of Narnia movie series, The Voyage of the Dawn Trader sees siblings Lucy and Edmund Pevensie, along with their cousin Eustace, traveling over the seas of Narnia – but conspicuously absent from the adventure are the elder Pevensie siblings, Peter and Susan, who don’t return to Narnia after being protagonists in The Lion, the Witch, and the Wardrobe and Prince Caspian.
The first two Fox/Disney movies set in Narnia centered all four Pevensie children, giving each of them detailed character arcs. Peter and Susan, however, only appeared briefly in The Voyage of the Dawn Treader after they were told by Aslan that they would be unable to return to Narnia after their departure at the end of Prince Caspian. This is consistent with the events of CS Lewis’ novels, though the reasoning for the eldest Pevensies’ inability to return differs between the books and the movies.