In the US, airlines scaled back on these requirements after a court order

Dubai: Passengers on UAE-based airlines will continue to wear face masks, two carriers confirmed, while US-based carriers removed the requirement following a court ruling.
An Emirates airline spokesperson said: “There’s no change to our mask mandate.”
Passengers must wear a cloth or medical mask throughout Dubai International airport, during boarding, throughout the flight, and as they leave the aircraft. Children under 6 years old and customers who have certain medical conditions do not have to wear a mask.
Due to local government regulations, only medical face masks are accepted on flights from Dubai to Germany, France, and Austria. If for medical reasons, passengers are unable to wear a mask throughout the entire journey, they can contact Emirates airlines 48 hours before their flight to request an exception and present a medical certificate at check-in.
“Kindly note that wearing masks on board remains mandatory on flydubai,” said a spokesperson for the Dubai budget airline.
According to the flydubai website, medical reasons for being exempt from wearing a face mask include the following cognitive, intellectual and sensory conditions:
This also applies to passengers who require supplemental oxygen or have the following respiratory conditions:
Some medical experts have urged passengers suffering from serious ailments to continue wearing masks. US-based oncologist Tatiana Prowell on Twitter said she is receiving messages from cancer patients who are concerned about flying without a mask mandate in place. “In addition to wearing N95 masks, I’m advising them to travel on less popular days/times if possible during the #pandemic for fewer crowds,” said Prowell on Twitter.
Another user on Twitter said: “I will still be wearing my mask in the airport and on planes”.
Some have welcomed the decision on the popular social media platform. “Unpopular opinion: I have a flight in 23 hours and am really excited to fly unmasked again. Incredibly supportive of those who choose to continue wearing masks - will happily mask up again if the mandate reverses,” said a user.
As per media reports, a federal judge in Florida has ruled that the directive was unlawful. Now, face masks are no longer required for airline passengers and staff at US airports and on domestic flights.