LAX
LAX is a good option to fly into if you are looking for many options for direct flights to Southern California. LAX is about 95 miles south of Montecito. You can then either rent a car, Uber, or take the Santa Barbara shuttle (https://www.sbairbus.com/lax-shuttle-schedule-fares/).
SANTA BARBARA AIRPORT
SBA is about 15 miles north of Montecito and is very convenient. You can rent a car or take a taxi, Uber, or Lyft from the airport to your accommodations.