This month I have travelled across countries in Europe by plane. It is quite a pain, specially because of the mask. Also the overall feeling of risks, controls, delays, etc. But overall better than I thought. Here in Germany, they offer Covid tests at the airport upon arrival. They are recommended (and sometimes required) when coming from certain destinations. It is quite efficient. The army has taken over an area with counters and so on, and it is quite impressive to see all the soldiers doing the admin in their camouflage uniforms and the health workers in their protective gear. They mail you the results in less than 24 h.