Jetstar free birthday flights offer

Jetstar has been flying in New Zealand for seven years. Photo / Mark Tantrum

Jetstar is celebrating seven years of domestic operations by offering passengers a free return leg ticket for flights to a range of domestic and trans-Tasman destinations.

The sale started this morning for travel periods between October-December and February-March 2017.

Jetstar's head of New Zealand Grant Kerr said seven years was a major milestone for the company.

"It's been a very big year for Jetstar's New Zealand operations with significant growth," he said. "We're delighted to be celebrating by offering thousands of more reasons to travel with us."

Its birthday sale fares start from $39 return. The airline does not say how many of the free flights are being offered as part of the promotion.