The cost of an extra bag on Air New Zealand domestic flights is set to double from next Tuesday.
In the wake of attempts to crack down on passengers who breach the 7kg cabin bag limit, the airline will now charge $60 for one extra bag, and $100 for a second extra piece of luggage, a 100% increase in both cases.
Overweight bags will also accrue heavier fees, with anything over 23kg incurring a $60 fine.
The new rates come into force next Tuesday, the same day Air New Zealand will implement an online service that allows passengers to prepay extra bags ahead of time at a lower rate than is charged at the airport.
Domestic customers who use the new pre-pay service will pay $30 for one extra bag and $50 for a second extra bag, the same as the old rates.
Excess and overweight fees will also increase on international flights, with the cost of an extra bag to Australia to increase from $75 to $120.
Customers will be able to use the new pre-pay baggage service from Thursday and will also be offered the opportunity to choose prime seats for an added fee.
Rival airline Jetstar also charges its customers for extra baggage and some types of seat selection.