A report by ForwardKeys has suggested US carriers, such as Delta Air Lines and United Airlines, could both lose 400,000 seats after president Donald Trump banned foreign nationals for an initial 30 days.
It initially only applied to 26 countries in Europe’s Schengen area, but on 16 March the policy was extended to cover the UK and Ireland.
The ban is designed to curb the spread of Covid-19, which has killed almost 8,000 people worldwide.
Other impacted airlines include British Airways, American Airlines, Lufthansa, Virgin Atlantic, Air France, Aer Lingus, KLM and Norwegian Air.