Several strikes hit Beirut's southern suburbs Sunday morning and at noon, after the Israeli military warned people to evacuate twice.
Columns of smoke were seen rising over the capital's southern suburbs, where Lebanon's only international airport is located.
Further south, overnight Israeli air strikes and shelling hit the flashpoint town of Khiam, the Lebanese state-run National News Agency reported.
Following the bombardment, the Israeli army said about 20 projectiles were seen crossing from Lebanon into Israel, and that some of them were intercepted. Emergency services did not immediately report any casualties.
Israel has escalated its bombing of Lebanon since September 23 and has since sent in ground troops, following almost a year of limited, cross-border exchanges of fire begun by Hezbollah militants in support of Iran-backed Hamas in Gaza.
Its military on Saturday said Hezbollah had already "paid a big price", but vowed to keep fighting until tens of thousands of Israelis displaced from the north can return home.
Israeli forces also shelled the southern area of Lebanon along the Litani River, the NNA said on Sunday.