Air New Zealand is suspending Auckland to Chicago services due to ongoing issues with the availability of serviceable Rolls-Royce Trent 1000 engines used in Boeing 787 aircraft.

They'll suspended from the end of this month, until late October.

Customers can rebook on another flight, or get a refund or credit.

The airline's chief customer and sales officer, Leanne Geraghty, says the company will work to ensure customers can still get to where they need to go.

"Our teams are in constant communication with Rolls-Royce as we work through trying to resolve the issue."

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