The Civil Aviation Authority is planning to rely less on airlines for its funding.
In a review of the way it collects money, the CAA is proposing to increase charges and levies for small operators.
It says the big carriers have been subsidising the rest of the sector for too long.
At the moment, airlines fund 75% of the aviation regulator but account for just a quarter of its expenditure.
The CAA says there hasn't been a thorough funding review for 15 years.
Submissions on a range of new funding proposals are being taken for the next four months.