Timeline

Phase 1:
Iron Man

The Incredible Hulk

Iron Man 2

Thor

Captain America: The First Avenger

The Avengers

Phase 2:
Iron Man 3

Thor: The Dark World

Captain America: The Winter Soldier

Guardians Of The Galaxy

Avengers: Age Of Ultron

Ant Man

Phase 3:
Captain America: Civil War

Doctor Strange

Guardians Of The Galaxy Vol. 2

Spider Man: Homecoming

Thor: Ragnarok

Black Panther

Avengers: Infinity War

Ant Man And The Wasp

Captain Marvel

Avengers: Endgame

Spider Man: Far From Home

Phase 4:
Black Widow