Air New Zealand says around 2000 passengers a day will be hit by flight cancellations after someone digging up a kauri log damaged the only jet fuel pipeline between Northland's Marsden Point refinery and Auckland Airport.
Air New Zealand said it was cancelling some domestic and trans-Tasman flights to consolidate passenger loads.
The pipeline, which is Auckland Airport's only supplier of jet fuel, was damaged by a digger, according to local media.
Air New Zealand says it can now only take 30 per cent of its normal fuel usage. At least 27 worldwide and domestic flights were cancelled over the weekend.
Due to a fuel shortage in Auckland, oil companies are limiting the amount of fuel being supplied to airlines at Auckland Airport.
Meanwhile, a number of its flights between Auckland and North America will operate with a refuelling stop at selected airports in the Pacific such as Nadi, Fiji.
Auckland Airport is New Zealand's largest global airport with passenger numbers of around 18 million a year.
Chief executive Adrian Littlewood said the airport was working with airlines to monitor the impact of the disruption, with a focus on assisting passengers.
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Mr English said he did not have details about what impact the shortage could have.
Refining NZ which owns the pipeline said it could take 10 to 15 days to fix.
Refining New Zealand said in a statement that it expected the fix could be made within two days by installing a clamp on the damaged section of the pipe.
Further, the company said in a statement to the New Zealand stock exchange on Monday engineers were at the site of the leak about eight kilometres south of the refinery.
"It's a private company that owns it and you would expect them to have better contingency plans", she told Radio New Zealand.
The Government was also trying to get more tankers on the road which could deliver fuel to Auckland and this included easing regulations around hours of work or weight restrictions.
It has raised questions about fuel supply security for the country's biggest city and Deputy Prime Minister Paula Bennett admitted it was embarrassing.