A Wellington-bound Jetstar flight forced to return to Auckland has again departed, an airline spokesman says.

Jetstar spokesman Phil Boyen said JQ261 turned back shortly after take-off "due to an indication of an engineering issue".

The flight landed normally.

A passenger emailed the Herald to say the 3.10pm flight had been in the air 35 minutes when passengers were told something was leaking.

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However, Boyen reiterated in his response to the Herald that nothing was leaking.

Engineers checked the plane and took off for Wellington again about 7.30pm..