First infections are not uniformly distributed. Second, by the nature of travel people get into close contact with more and more importantly different people than usual. 200 people sitting in an aircraft for 2 hours is inherently more risky than 200 people sitting in a theater for 2 hours as aircraft mix people from wider geographic areas. So, regardless of infection rates, this is beneficial for both Europe and the US at the same time.

Multiple cities with hundreds of thousands of people in both the US and Europe are infection free right now. Extending that for even a few weeks is very useful.