Complex sentence: Gustavo Rojas Pinilla International Airport, also known as Sesquicentenario Airport, is an airport located on the San Andres Island, Colombia, but it also commercially serves the nearby island of Providencia, both major Caribbean vacation spots for South and Central American tourists.
Split into simpler sentences: Gustavo Rojas Pinilla International Airport, also known as Sesquicentenario Airport, is an airport located on the San Andres Island, Colombia, which also commercially serves the nearby island of Providencia. These are both major Caribbean vacation spots for South and Central American tourists.