FILE - In this Aug. 26, 2016, file photo, a Southwest Airlines jet makes its approach to Dallas Love Field airport, in Dallas.
FILE - In this Aug. 26, 2016, file photo, a Southwest Airlines jet makes its approach to Dallas Love Field airport, in Dallas. Tony Gutierrez AP
FILE - In this Aug. 26, 2016, file photo, a Southwest Airlines jet makes its approach to Dallas Love Field airport, in Dallas. Tony Gutierrez AP