Resulting from the travel ban in the U.K., British Airways has warned it's workers that they are struggling to survive on a crisis "worse than 9/11" caused by the coronavirus epidemic. Alex Cruz, who is British Airways' chief executive wrote to some 45,000 employees informing them that the airline would be "parking aircraft in a way [they] never have before." 

Above: Grounded British Airways Planes

Source: https://bit.ly/2IJULkX 

British Airways is a part of the IAG (International Airlines Group). Its main sister carrier, which is Iberia Airlines is based in Madrid where there is a "focus of a major Covid-19 outbreak," and on top of that, recently, the Forign Office advised against all travel to the Spanish capital unless absolutely necessary.

Above: The amount of Coronavirus Cases in Spain; 

Focused in Madrid with up to 1,000 cases

Source: https://bit.ly/2QiKW1z 

Even before Trump's travel ban, passenger airlines were estimated to lose $113,000,000,000 ($113bn) in revenue just this year.

Source: https://www.theguardian.com/business/2020/mar/13/ba-says-jobs-will-go-as-airline-industry-faces-crisis-worse-than-9-11-coronavirus