Generally, there are only two (2) times per year that you can switch health plans outside of open enrollment. They are: 1. During the annual open enrollment period a Health insurance open enrollment for Under 65 health plans for the 2018 plan year took place from Nov. 1 to Dec. 15, 2017. The exact open enrollment dates for 2019 plans haven’t been announced as of yet, but will likely be announced in the fall of 2018. 2. During a "qualifying" special enrollment period a You mi