Complex sentence: After deregulation of the airline industry in 1978 the terminal and airfield were too small, and in 1983 airline flights moved to the new Southwest Florida Regional Airport, now called Southwest Florida International Airport (RSW).
Split into simpler sentences: After deregulation of the airline industry in 1978, the terminal and airfield were too small. In 1983 airline flights moved to the new Southwest Florida Regional Airport, known today as Southwest Florida International Airport (RSW).