Raymond Benjamin, the secretary general of the International Civil Aviation Organisation (ICAO), said the group will include around 40 people from "all the segments of the aviation sector", including pilots and air traffic controllers.
The UN Counter-Terrorism Committee as well as Interpol will also be represented. The group will meet for the first time in Montreal from August 14-15.
"They will have to work very quickly. They will have around six weeks to come up with a certain number of recommendations," Benjamin told a press conference during an official visit to Singapore.
All 298 people onboard flight MH17 were killed when it was shot down in rebel-held territory on July 17.
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The United States accuses insurgents of downing the Boeing 777-200 jet with a surface-to-air missile likely supplied by Russia, while Moscow and the rebels blame the Ukrainian military.
Benjamin, who was in Singapore for meetings with local civil aviation officials, said he did not believe the task force would suggest the ICAO take on a supervisory role over countries' sovereign airspace.
"What we are looking for is how we can enhance the current system," he added. Currently, individual countries have full control over their own airspace. ICAO has no powers to open or close airspace.
Airlines make decisions on their flight routes based on their own independent assessments as well as that of their respective home countries' civil aviation authorities.
"What the airline industry wants... Is to be provided with credible information on what are the risks, and then they can take a decision," said Benjamin.