The Egyptian navy is currently sweeping the area 180 miles north of the Mediterranean coastal city of Alexandria looking for the plane's black box. It's still not known what brought it down.
The Republican frontrunner wasted no time in weighing in on the situation, despite officials saying repeatedly they do not know what happened yet.
The Airbus A320 carrying 66 people from Paris to Cairo disappeared over the Mediterranean on Thursday. Egypt's aviation minister said terrorism is more likely than an accident.
Egypt's government is facing an insurgency that has killed hundreds of soldiers and policemen, mostly in northern Sinai, since mid-2013, when President Abdel Fattah al-Sisi took power.
The militant group claimed responsibility and said a suicide bomber blew himself up at a security checkpoint before the mortar shelling began.
After months of denial, Egypt's president finally admitted something everyone else already knew: Islamic State militants snuck a bomb onto a Russian passenger jet last November that killed all 224 passengers and crew.
Russia, western governments and the Islamic State all say a bomb brought down a Russian passenger plane on its way back from an Egyptian tourist resort — but Egypt says otherwise.
The terror group pulled off a coordinated attack on a hotel where Egyptian judges who were monitoring parliamentary elections were staying.
The latest issue of Dabiq contains a short editorial praising the attacks in Paris, and a photo of the bomb that the group claims brought down a jet in Egypt.
The chairman of the Egyptian-led investigation into the crash did not address reports that a bomb brought down the plane, but said preliminary evidence indicates an “in-flight breakup.”
After intelligence suggested earlier this week that a Russian flight from the area might have been bombed, the British government suspended commercial flights between the UK and Sharm el-Sheikh. Russia has now suspended all Egyptian flights.