The Schengen Area countries are: Austria, Belgium, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden and Switzerland.
Most of the countries in the area are members of the European Union. Norway, Iceland, Switzerland and Lichtenstein are not, but they opted into the Schengen Area and are included in the travel ban.
The United Kingdom includes England, Scotland, Wales and Northern Ireland.
[Have questions about travel and the coronavirus? We have answers.]
Which airlines will be most affected?
The travel ban will affect all 28 trans-Atlantic carriers, which collectively make around 1,500 flights per week from Europe and carry more than 400,000 passengers.
Delta Air Lines, the largest trans-Atlantic carrier, has 266 flights from Europe to the United States weekly, according to Cirium, an airline data research firm. In a memo released Friday, Ed Bastian, Delta’s chief executive, said the airline would halt flights to and from continental Europe for 30 days, beginning Sunday.