Dubai-based Emirates has announced it will stop flying over Iraq amid fears of missile threats to passenger planes from terrorists.
Emirates' chief executive Tim Clark told London's The Times that the MH17 tragedy had "changed everything".
"We cannot continue to say 'Well, it's a political thing'. We have to do something," Sir Tim said.
"We have to take the bull by the horns."
Qantas says its average flight level over this space is around 38,000 feet to 41,000 feet.
Watch: Family of MH17 victim pay respects at crash site
The Australian airline will be represented by the airline peak body IATA at Tuesday's International Civil Aviation Organisation talks in Montreal, and says it will "review any broader recommendations for mitigating risks associated with areas of conflict".
- AAP