* A flight of steps: A flight of steps is already a complete phrase and doesn't have a homophone. However, "flight" as a word itself has the homophone flite, which is an archaic word meaning "to flee."
* To look fixedly: The homophone for "to look fixedly" is to look fix it lee (to look at something very closely).
Note: "Fix it lee" is a bit of a playful and informal way to represent the homophone. It's not a real word, but it captures the sound of the phrase being pronounced with the homophone.