Flames spread Friday across a grassy open field in Chula Vista's Eastlake area, moving toward some homes but causing no reported structural damage.
The blaze erupted about 4 p.m. off Otay Lakes Road, near Woods Drive, for unknown reasons, officials said.
Cal Fire, which assisted Chula Vista Fire Department in fighting the blaze said that it burned 80 acres and was 100 percent contained by about 10:30 p.m.
Crews fighting the fire from the ground and aboard water-dropping helicopters had the flames largely under control within two hours, Chula Vista police Lt. Eric Thunberg said.