To dream that you are late signifies your fear of change and your ambivalence about seizing an opportunity. You may feel unready, unworthy, or unsupported in your current circumstances. Additionally, you may be overwhelmed or conflicted with decisions about your future. Time is running out and you no longer have time to accomplish all the things you want. Alternatively, being late in your dream could be telling you that it is better late than never.
- Common Dreams