Stranded tourists gather in front of a ticket office in Nepal after their flights were cancelled a day after the earthquake. REUTERS/Navesh Chitrakar
More than 200 Australians have been confirmed safe but 549 were registered with the government as travelling in the area.
Saturday's 7.8 magnitude earthquake has been described as a "huge disaster" by World Vision chief Tim Costello, who was due to arrive in Nepal on Monday.
A 6.7-magnitude aftershock on Sunday compounded the worst disaster to hit the impoverished Himalayan nation in more than 80 years.
Australia has committed $5 million in aid.
