Still, many of the characters you saw evaporate into thin air are slated to return for the still-untitled fourth Avengers movie. Perhaps they are not actually dead, maybe they will be resurrected or maybe they will appear in flashbacks?
A new video from nerd resource Looper details all of the Marvel superheroes that will return for Avengers 4, even if it can't explain how.
Here they are: Ant-Man, Black Panther, Black Widow, Captain America, Captain Marvel, Falcon, Gamora, Hawkeye, Hulk, Iron Man, Mantis, Nebula, Scarlet Witch, Spider-Man, Thor, Vision, War Machine, Wasp and Winter Soldier.
Some of them, like Ant-Man, survived by simply sitting out the apocalyptic events of Infinity War. Captain Marvel was particularly smart because she didn't even show up until after the credits.
She'll make up for lost time. Avengers 4 is out just a couple of months later, on May 3, 2019.