A Delta Boeing 747 from New York was flying over the Mediterranean headed for Tel Aviv on Tuesday when it turned around and flew to Paris instead. Flight 468 had 273 passengers and 17 crew on board.
Airlines and passengers are growing more anxious about safety since last week, when a Malaysia Airlines jet was shot down over Ukraine, killing all 298 people on board.
The Federal Aviation Administration is also telling US airlines they are prohibited from flying to the Tel Aviv airport in Israel after a Hamas rocket exploded nearby.
The FAA said in a statement that the ban on flights is for 24 hours beginning at 12:15 pm EST on Tuesday.
The statement said the rocket strike landed about one mile from Ben Gurion International Airport on Tuesday morning.
The notice only applies to US airlines since the FAA has no authority over carriers from other nations.
The agency said it will continue to monitor and evaluate the situation, and that updated instructions will be provided to US airlines "as soon as conditions permit, but no later than 24 hours" from the time the directive went into force.