ACA-compliant coverage is generally available only during the open enrollment period from Nov. 1 through Dec. 15. Most private insurers who offer plans outside of the marketplace also adhere to this open enrollment schedule. You may also be eligible to enroll in health insurance if you have a qualifying event such as marriage, divorce, or a change in existing coverage. The easiest way to find insurance today is by using the FirstQuote Insurance Health Insurance tool to find and compare coverage options from many providers.