San Diego International Airport (IATA: SAN, ICAO: KSAN, FAA LID: SAN) , formerly known as Lindbergh Field, is an international airport 3 mi northwest of Downtown San Diego, California, United States. It is owned and operated by the San Diego County Regional Airport Authority. Using only the above description and what you know about the world, "San Diego International Airport and Lindbergh Field have never operated flights at the same time." is definitely correct, incorrect, or inconclusive? 