Indonesia and India are two exciting countries to compare in handling this COVID-19 pandemic. There have been many studies on predictive analytics related to the COVID-19 pandemic, either in cases, deaths, or vaccinations. However, we have not found any studies that predict the achievement of herd immunity based on vaccination rates combined with several herd immunity theories, especially those comparing Indonesia and India. This study will compare the handling of the COVID-19 pandemic in Indonesia and India, especially regarding the two countries' national vaccination programs. Therefore, this research focuses on determining which countries are quicker to achieve herd immunity and when that herd immunity can be obtained using exponential smoothing predictive analytics. Our result shows that India would achieve herd immunity faster than Indonesia. It is predicted that India will reach complete vaccination for 85% of its population by mid-April 2022, while Indonesia will achieve it at the end of June 2022. This result is quite surprising because India has a population five times larger than Indonesia. Subsequent research is needed to determine whether the predictions made in this study have a pretty good level of accuracy or vice versa. For example, which herds immunity threshold is correct from the various herd immunity theories proposed.