BHP extended the arrangement through an exercise of its option, outlining that Alliance will manage charter services into Coondewanna near the company's Mining Area C, as well as Barimunya, near its Yandi operation.

Alliance is the largest supplier of air charter services for resources FIFOs in the country.

"We are very pleased with the continuation of the contract and look forward to continuing to provide BHPIO with our industry leading service on flights between Perth and the BHPIO owned and operated Coondewanna and Barimunya airports," Alliance managing director Scott McMillan said.

Alliance also has a contract with BHP Nickel West as well as the Olympic Dam operation in South Australia. Both are multi-year deals.