The Air Line Pilots Association said Monday that 75 percent of Eagle pilots who voted favored ratification. Turnout was 85 percent of eligible pilots.
Pilots for Fort Worth-based American Airlines have resumed negotiations with their company, which is trying to reduce labor costs through the bankruptcy-protection process.
Eagle and American Airlines are owned by AMR Corp. All three filed for bankruptcy protection in November.
AMR had wanted to sell or spin off Eagle, but those plans were put on hold with the Chapter 11 filing.