The Speed Force shows Barry his mother's grave, and later he visits it with Iris in episode 2x21 "The Runaway Dinosaur". The team attends Barry's father's funeral in episode 2x23 "The Race of His Life". Barry finds Joe visiting Iris's grave in the future in episode 3x19 "The Once and Future Flash". Appears in 1 more episode.
Savage watches the deployment of the Leviathan weapon and later he fights with Kendra in episode 1x13 "Leviathan".
Jax gives the eulogy at Martin Stein's funeral in episode 3x08 "Crisis on Earth-X, Part 4".