Mr Crawford said the number of seats sold per flight so far had varied from nine to this morning's 7.30am return flight from Wellington which was empty.
That flight time would change to 8.15am from next Monday. Feedback from House of Travel and some business customers indicated people coming to Westport from Christchurch and Auckland couldn't make Wellington early enough to catch the 7.30am flight.
The 6.15am departure time for the flight from Westport to Wellington would remain unchanged.
Meanwhile, the Westport Airport Authority says Buller ratepayers won't have to top-up Sounds Air's new service unless the average number of seats sold per flight over a year falls below three.
The airline has a six-year deal, including a seat guarantee, with the Buller District Council which operates Westport Airport.
Asked for details of the guarantee, Westport Airport Authority chief executive Sonia Cresswell said it was a "robust legal agreement which safeguarded the council and exposed it to minimum risk".
"As long as the average of three seats per flight is met then there will never be any need to enact the guarantee. The average is worked out over a year.
"We don't anticipate having to enact the guarantee given our history of seat averages on flights over several years being 12."
The amount had not been budgeted for but had been noted as a contingency, she said.
"It is now up to the community to show evidence of their support in the form of passengers on flights. I look forward to welcoming people and putting on extra flights to meet demand."
- Westport News