Flights have now dropped to an average $150 dollars one way, and the carrier is providing free trips for immediate family members of those killed as well as discounts for wider family.
The pilots said that soon after engaging the autopilot on Boeing 737 Max 8 planes, the nose tilted down sharply.
The Boeing 737 Max 8 operated by Ethiopian Airlines crashed shortly after taking off from the capital of Addis Ababa.
The National and NZ First MPs spoke on TVNZ1 Breakfast's political panel.
The airline has been looking for ways to stimulate domestic demands since announcing a profit downgrade last month.
Would-be air travellers were blocked from buying tickets 17.5 million times last year for "social credit" offences including unpaid taxes and fines.
Local boards are concerned, but the council says without a bylaw in place, they have no power to enforce where and when people camp.