You can search for online courses specifically on the timetable available via MyUW.Here's how you do it:
1) Sign on to MyUW
2) Go into the "Student Center"
3) In the upper right hand corner, click on "Search for Classes"
4) After selecting the term, you can choose the "Mode of Instruction" from the drop-down menu.
5) Choose "Online only" option from menuOptions include: Classroom Instruction, Online (some classroom), Online only