Bruce McCaffrey, the former highest-ranking U.S. executive of Qantas Airways Limited, Australia’s largest airline, agreed to a plea deal with federal prosecutors Thursday to serve eight months in prison and pay a $20,000 fine.

The deal, which is subject to approval by the U.S. District Court for the District of Columbia, requires McCaffrey to cooperate with an ongoing investigation by the Justice Department’s antitrust division into price-fixing within the airline industry.