Free "Downton Abbey" reruns are available on PBS.org. As of March 2015, all nine episodes of season five are available to watch on the website. Previews and shorts of other episodes are also available to view for free.
Season four had an average of 13.2 million viewers, making "Downton Abbey" the highest-rated PBS drama to date. Season five began on January 4, 2015, and concluded on March 1.
Amazon Prime members can enjoy the first four seasons of "Downton Abbey" on Amazon Prime Instant Video. These episodes are available at no additional cost beyond the price of an Amazon Prime membership.