However some airlines, not affected by these rules have worked fabric face mask bans into their terms of service.
LATAM and most recently Finnair have opted to ban homemade face covering from their planes.
"Fabric masks are slightly less efficient at protecting people from infection than surgical masks," says Finnair's updated mask policy on 16 August.
Single-use medical masks are the only approved coverings on their flights. However these can still be removed "for a limited time while you're eating or drinking."
The move away from cloth face masks in Europe happened with the arrival of more virulent strains of Covid 19. In January, France made mask wearing mandatory in public places while Germany and Austria recommended that only surgical masks were used.
Overseen by Chancellor Angela Merkel, the German federal government decided to advise against cloth coverings, given they were "not subject to any standards with regards to their effectiveness."
In New Zealand the official guidelines on face coverings promote single use and reusable cloth masks equally. The official Covid 19 advice page even promotes instructions on how to make your own cloth face covering.
With the arrival of Delta in the country, policies on face coverings have been tightened. This afternoon the Prime Minister outlined new requirements for mask wearing.
"Just as a general rule, if you are leaving the house, please wear a mask," said PM Jacinda Ardern. "It makes all the difference."
Air New Zealand, which is currently operating a reduced service for essential travel, requires passengers to fly wearing face covers.
A spokesperson for Air New Zealand said that they "continue to monitor and adjust our risk assessment where required" but that their guidance on mask requirements was set by the Ministry of Health.
"To support customers with the mask mandate, we have surgical masks available at all our departure gates."
Both cloth face masks and single use medical masks are accepted on flights, referring passengers to the government's advice on face coverings.
The Ministry of Health said home made and bought cloth masks were approved as effective.
What masks can I wear on public transport?
Currently the ministry of health does not distinguish between the effectiveness of reusable fabric masks or single-use surgical masks.
"Re-usable fabric masks ideally have three layers of fabric and can be purchased through retail outlets, online or you can make your own," says the Ministry of Health guidance.
A scarf or a bandana are not recommended as a suitable cloth face covering.
Similarly construction dust masks with a one-way valve are also not permitted, as they allow droplets to spread if the wearer coughs or sneezes.
While surgical masks are regulated, they are designed to be worn only once. They may not be as effective if reused.
