Not exactly. for example, Air France:
- Our aircraft are equipped with an air recycling system consisting of HEPA «High Efficiency Particulate Air» filters identical to those used in operating theatres, which trap 99.9% of particles.
- The air in the cabin is renewed every 3 minutes.
KLM:
Fresh air
During the flight, the air is constantly refreshed with fresh air from outside the aircraft. Our aircraft are equipped with HEPA filters. These filters capture 99.99% of all bacteria and viruses, including the coronavirus.