I can recall a few instances of using cliffs/cliffhangers within an episode of a tv show or film, but I'm struggling to think of an episode or a film that ends in a cliffhanger, except Big Little Lies, Hannibal, Game of Thrones, and possibly Alias.
Cliffhangers in episodes
LOST - 1x05 "White Rabbit" John saves Jack when he goes a over a cliff after chasing his father.
2x21 "?" John Dreams of Echo climbing the cliff from where the airplane fell and looks down to reveal the Pear Dharma station. In the dream Eco falls, playing on John's conscious in terms of what happened to Boone and foreshadowing Eko's role, as the plane was the plane his brother left Nigeria on.
Game of Thrones - Wall Climbing/Crumbling Motifs
3x06 "The Climb" - Jon, Ygritte, and Wildlings Climb Crumbling Wall. Ygriite Falls, Jon is able to hold onto them both.
7x07 "The Dragon and the Wolf" - End of Episode/Season 7 Finale - The knight King and Ice Dragon Collapse Wall/East Watch - Fates of Characters at Wall (Tormund, Beric, Edd) currently unknown.
Note: Philosophy "The Climb is All There Is" = Thematic.
Stranger Things 1x06 "Chapter 6" - Eleven Saves Mike From Jumping Off Cliff
Big Little Lies (Mini series) Episode 1.04 "Push Comes to Shove" - Episode Literally Ends with Jane about to jump off a Cliff!
Note: Cliffs are thematic to Big Little Lies foreshadowing the murder sequence and adds a great deal of suspense in many scenes.
Hannibal (TV Series) - 3x13 "The Wrath of the Lamb" - End of Episode - Will and Hannibal Fall Together Off A Cliff After the Murder of 'The Tooth Fairy'.
Alias 5.01 "Prophet Five" - Sydney Tells Vaughn She's Pregnant, Before They Both Escape Their Enemies by Jumping Off A Cliff. I believe this one is a cliffhanger, even though it happens in the middle of the episode. I think the remainder of the episode focuses on other characters. (But it's been a while since I watched).
Other In-Film/Episode Scenes:
Star Trek (Kelvinverse - Film Franchise) - Young Kirk Iowa Flashback (Star Trek), Kirk & "Bones" Chase/Jump Opening Sequence (Star Trek Into Darkness), USS Franklin Jump-Start Cliff/LOST Dharma Van Parallel (Star Trek Beyond)
Pirates of the Caribbean: On Stranger Tides - Blackbeard Makes Jack Jump
The Lion King - Scar Murder Mufasa Death Scene
LOST - Hurley Nearly Commits Suicide ("Dave"), Sawyer & Kate Jump Escape (finale season)
I'm sure there are more. If I think of them, I will edit my post.