According to the following press release, SWISS is starting twice daily service to Oslo:

http://www.swiss.com/web/EN/about_sw...289&Country=CH

Schedule:

SWISS Zurich-Oslo services (from 19 June 2009)


LX 1210 Zurich - Oslo dep 07:05 arr 09:20 (daily)
LX 1216 Zurich - Oslo dep 16:50 arr 19:05 (daily)

LX 1211 Oslo - Zurich dep 09:50 arr 12:10 (daily)
LX 1217 Oslo - Zurich dep 19:40 arr 22:00 (daily)