Air New Zealand auction site GrabASeat is now 10% behind the main website of the carrier, the widest gap since the pair swapped positions in 2011.
The mothership saw its share of the airline category increase to over 34%, as GrabASeat dropped by 0.25%.
During early to mid-2011 the pair swapped positions on a number of occasions, but GrabASeat has now sat in second place for months.
Meanwhile, third placed Jetstar saw its market share fall by 1.25% from its previous week.
Most popular travel websites in New Zealand for the week ending January 7 2012:
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Destinations and Accommodation
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NB: Data courtesy of Experian Hitwise
NB2:Image via rook76/Shutterstock