Rescue teams have found no trace of a missing Canadian bushwalker after searching the Mount Kosciusko and Charlotte Pass area in New South Wales.

Prabhdeep Srawn, 25, set out on a mountain walk on Monday last week but has not been seen since.

A rescue helicopter took off just before 7am and used a thermal camera to search areas around Perisher and Kosciuszko.

The search has been suspended and resume at 7:30am tomorrow.