Most major airlines have B funds or very generous 401k matching programs. I can only speak for JetBlue directly. We put in 5% and the company contributes another 13% of your W2 earnings. 18% total per year. A320 CAs easily max out the yearly limits. The average line holding A320 CA easily clears 200k a year worth of gross earnings. Throw in the company 13% 401k contribution, profit sharing, per diem, overrides, and health insurance and the average A320 CA easily has a renumeration package worth 300k a year. Some guys can scheme the system and and clear 300k gross earnings alone. None of these guys are leaving to fly for fracs or corporate.