Passengers on Lufthansa Group flights for the next four months will be required to wear face masks.

Mouth-nose covers will be a compulsory prerequisite throughout the entire journey on Lufthansa, Swiss, Austrian Airlines, Brussels Airlines and Eurowings flights until 31 August 2020.

In addition, Lufthansa Group is asking all passengers continue to wear masks at the airport, before and after the flight, wherever the required minimum distance cannot be guaranteed without restriction.

The group has also provided details of changes to in-flight procedures:

The current regulation of Lufthansa Group Airlines to keep the neighbouring seat free in Economy and Premium Economy Class will no longer apply, as wearing the mouth-nose cover provides adequate health protection.  Due to the current low occupancy rate, seats will nevertheless be allocated as widely as possible throughout the cabin. 

All flight attendants on Lufthansa Group flights in direct contact with customers will also wear a corresponding mask.

Passengers are requested to bring their own mouth and nose cover. A reusable fabric mask is recommended, but all other types of coverings such as simple disposable masks or scarves are also possible. The airlines will inform their passengers in advance by SMS or e-mail and on their websites about the new regulation.

The airline group also gave information about the likelihood of transmission on its flights:

In principle, infection on board remains very unlikely. Since the outbreak of the pandemic, no concrete cases of transmission on Lufthansa Group flights have become known. All Lufthansa Group aircraft are equipped with the highest quality air filters, which guarantee air quality similar to that in an operating theatre. In addition, the air circulates vertically instead of being distributed throughout the cabin

The requirement comes in to force on Monday, 4 May 2020 and will “preliminarily apply” until 31 August 2020.