Silja Line ferries are operated by Tallink, and offer services between Finland and Sweden. Tallink are a leading ferry operator in the Baltic Sea, with a fleet of 19 vessels in total. The Silja Line routes are operated by four of those ships (MS Silja Serenade, MS Silja Symphony, MS Silja Europa and MS Galaxy), covering the following routes:
- Helsinki - Mariehamn - Stockholm; and
- Turku - Mariehamn/Langnas - Stockholm.