Air New Zealand was recently forced to remove its pre-selected travel insurance after a warning from the Commerce Commission, but Jetstar is standing its ground.
A survey of Consumer NZ members in June found 93 per cent of respondents wanted Jetstar to stop using pre-ticked boxes.
Choice director of campaigns and communications Matt Levey said "this practice is shonky".
Earlier this year Jetstar said in a statement that checked baggage, seat selection and travel insurance were all pre-selected during its booking process.
"Jetstar is a low cost carrier and our pre-selected options are in line with other low cost carriers worldwide.
"The pre-selected items on Jetstar's website were all are clearly displayed and easy to deselect, a spokesman said.
"Pre-selection can alert travellers to services such as travel insurance or checked baggage that they may not have considered.
"If they don't want to purchase a pre-selected product they just tick a button and continue with their booking.
"We believe our pre-selection processes comply with all laws and we are explaining our position to the Commerce Commission."