The US president, wearing a blue baseball cap, made no comment to waiting reporters as he boarded his helicopter Marine One in Rehoboth Beach, Delaware, to fly back to Washington.
After his arrival, Biden went straight to the Oval Office.
He had been due to stay in the coastal town where he keeps a house on Sunday, but cut the trip short for consultations on the Middle East situation, the White House said.
Biden had arrived in Rehoboth less than 24 hours earlier, shortly after warning Iran not to attack Israel but saying he expected an attack sooner rather than later.
Earlier Saturday, White House National Security Advisor Jake Sullivan said he spoke with his Israeli counterpart Tzachi Hanegbi to emphasize Washington’s “ironclad” support.
Defense chief Austin also spoke to his Israeli counterpart and “made clear that Israel could count on full US support to defend Israel against any attacks by Iran and its regional proxies,” the Pentagon said.
A retired Israeli general, Amos Yadlin, told the country’s Channel 12 news that the Iranian drones were equipped with 20kg of explosives each.
Israel’s military said sirens would sound in any threatened areas and that its defences were poised to deal with them.
Israel and neighbouring Jordan, which lies between Iraq and Israel, said they were closing their airspace on Saturday night.
The Gaza war between Israel and Hamas, now in its seventh month, has driven up tensions in the region, spreading to fronts with Lebanon and Syria and drawing long-range fire at Israeli targets from as far away as Yemen and Iraq.
Earlier on Saturday, Iran’s state-run IRNA news agency reported that a Guards helicopter had boarded and taken into Iranian waters the Portuguese-flagged MSC Aries.
MSC, which operates the Aries, confirmed that Iran had seized the ship and said it was working “with the relevant authorities” for its safe return and the wellbeing of its 25 crew.
MSC leases the Aries from Gortal Shipping, an affiliate of Zodiac Maritime, Zodiac said in a statement, adding that MSC is responsible for all the vessel’s activities. Zodiac is partly owned by Israeli businessman Eyal Ofer.
Israeli Foreign Minister Israel Katz accused Iran of piracy.
