Delta Air Lines and United Airlines canceled dozens of Christmas Eve flights because of staff shortages tied to omicron.
Four global long-haul airlines say passengers on U.S.-bound flights face new security interviews at the request of American officials.
The head of the Russian Federal Aviation Agency has chided the owner of the plane that crashed in Egypt on Saturday for pointing to one cause of the crash, saying investigators simply do not have enough data to reach any conclusion.
Lufthansa indicated Monday that it was under no obligation to report to Germany's national aviation authority the fact that Germanwings co-pilot Andreas Lubitz suffered from depression several years ago.
Lufthansa says its insurers are setting aside $300 million to deal with possible costs resulting from last week's crash of a Germanwings jet in the French Alps, in which 150 people died.
The Federal Aviation Administration says it will continue its ban on U.S. airline flights to Tel Aviv while assessing the danger of rocket attacks.