To dream that you are Canceling an arrangement or arrangements recommends that you are hesitant to stand up to some matter. You would prefer not to acknowledge the obvious issues."

To dream that you are canceling an appointment or plans suggests that you are afraid to confront some matter. You don't want to face the facts.

Imagining that your flight was crossed out shows that you are feeling vulnerable or caught by some circumstance. You feel you are being kept down, either physically or rationally."

Dreaming that your flight was cancelled indicates that you are feeling helpless or trapped by some situation. You feel you are being held back, either physically or mentally.