Not limited to just the ending right? And not just sad tears?
The Lord of the Rings: The Return of the King.
Godzilla: Minus One.
Big Fish
Avengers: Endgame
The first 10 min of Pixar’s Up!
Grave of the Fireflies.
Huh, this topic’s trickier than I originally thought. Good on ya, OP.
Your country Thanks you and so do I. 
“Dances With Wolves” gets me every time to the point where I avoid watching it.
The Green Mile and a lot of the movies mentioned here as well.
The end of Lord of the Rings: Return of the King where Aragorn is being crowned king and the Hobbits attempt to bow before the king and Aragorn says, “No my friends, you bow to no one.” Then everyone including the king bows before these Hobbits who saved Middle Earth. I lost it so bad.