Airlines from the US, Europe and Asia have suspended flights to Israel and Lebanon, citing security concerns following recent developments in the Middle East.

The decision comes after the assassination in Tehran of the political head of Hamas, Ismail Haniyeh. Iran's expected retaliation against Israel has increased security risks, affecting airline operations.

United Airlines, which operates 14 weekly flights between New York and Israel, has suspended flights to Israel until August 6.

On Wednesday, US Delta Airlines and British Airways also suspended their flights to Israel.

Meanwhile, Swiss International Air Lines suspended flights between Zurich and Tel Aviv until at least August 8, citing crew and passenger safety. Also, the suspension of Zurich-Tel Aviv flights, which was originally supposed to end on July 29, has been extended until August 12.

Likewise, the German airline 'Lufthansa' announced that it has suspended flights to Beirut and Tel Aviv until August 8 and 12, respectively, due to security concerns.

The airline said it will monitor the situation on the ground to determine when flights can resume.

Air India also canceled its flights to Tel Aviv until August 8, citing security concerns, reports ASTh.

ITA Airways, Italy's flag carrier, announced that flights to and from Tel Aviv have been suspended until August 6 due to "geopolitical developments in the Middle East and to ensure the safety of its passengers and crew".