Flights were diverted and others grounded throughout the Midwest after a temporary outage at a Minnesota air traffic control facility caused issues, the FAA said.
Neither of the other major US airlines that historically offered flights to Israel, Delta and American Airlines, have resumed service yet.
Video taken by a passenger shows the flight crew spraying insect repellent as the mosquitoes buzzed around the cabin.
The FAA is slowing traffic in and out of LaGuardia and Newark airports in New York due to the smoky conditions.
Biden himself offered no explanation -- or reassurance -- to the public.
The first incident was a suspected Chinese spy balloon, which entered U.S. airspace on Jan. 28 north of the Aleutian Islands in Alaska, according to a senior military official.
