"Am due to" refers to an event that is scheduled or expected to happen at a certain time. The antonyms for this phrase include "not due to," which signifies that an event is not expected or scheduled to happen at a specific time, "unexpected" which denotes a situation that occurs unpredictably, and "unscheduled," indicating that an event is not listed on a planned schedule. Additionally, antonyms for "am due to" may include "late," implying that an event has not occurred on time or even at all, and "early," indicating that an event is anticipated to happen sooner than scheduled or expected. The antonyms for "am due to" help to convey a different meaning by demonstrating the opposite of the scheduled and predictable expectation.