Delta Air Lines absorbed Northeast in 1972 .
Delta Air Lines continued to serve the airport with the DC - 9 until 1978 , then 727 - 200s until 1980 when it discontinued service at Manchester .
Delta Air Lines absorbed Northeast in 1972 and continued to serve the airport with the DC - 9 until 1978 , then 727 - 200s until 1980 when it discontinued service at Manchester .