Fly to Tallinn,spend the night at a hotel and take the boat back.
Package trips are delivered in cooperation with Viking Line Abp

 

http://www.vikingline.fi/index.asp?lang=en

 

Hospitable accommodation in Tallinn can be found in all price ranges with the Hotels provided by:

http://www.tallinnhotels.ee/_eng

 

Customers in Helsinki are quickly transported to their final destinations by:

http://www.taksihelsinki.fi/htdeng/page1.aspx