Question: What major U.S. airline and the world's largest low-cost carrier headquartered in Dallas, Texas, ended service at Jack Brooks Regional Airport in 1980?
Sentence (from "Jack Brooks Regional Airport"): Jack Brooks Regional Airport (IATA: BPT, ICAO: KBPT, FAA LID: BPT) , formerly Southeast Texas Regional Airport, is near Port Arthur, Texas, nine miles (14 km) southeast of Beaumont and northeast of Port Arthur.
Relevant evidence: Yes