When U.S. and European airlines quickly canceled flights to Israel on Tuesday, they showed both a skittishness and a new sense of urgency in dealing with global trouble spots following last week’s downing of a passenger plane over Ukraine.

Delta Air Lines turned around one of its jets midflight and indefinitely canceled all future flights between the U.S. and Israel after a rocket fired from the Gaza Strip landed near Tel Aviv’s Ben-Gurion Airport. Other U.S. airlines quickly took similar action, and counterparts in Europe and Canada followed within hours, despite protests from the Israeli government. Israeli airline El Al maintained its regular flight schedule.

The airlines were out ahead of aviation regulators in stopping service. The Federal Aviation Administration imposed a 24-hour ban on flights to Israel after the U.S. airlines acted. Germany’s Lufthansa, Italian airline Alitalia and Air France all acted before the European Aviation Safety Agency issued an advisory.

How long the cessation of flights will last is unclear. U.S. airlines now must wait for the FAA, which said it will provide updated guidance by midday today.

Scandinavian Airlines canceled two flights from Copenhagen to Tel Aviv on Tuesday evening and this morning, and said it will rethink the situation for two more flights this week. Budget airline Norwegian said it had scrapped a flight from Stockholm to Tel Aviv today and was monitoring the events closely, the airline’s spokesman Charlotte Holmbergh Jacobsson said.

Also today, Royal Jordanian suspended its flights to Ben Gurion until further notice, according to the airline’s spokesman, Basil al-Kilani.