For a quick snapshot, in 2014...
United CEO Jeff Smisek was paid $12,762,226 in 2014, up from $8,138,305 in '13. (Yes, that's $20+ million for 24 mo's work, or $860,000 PER MONTH

)
AA CEO Doug Parker was paid $12,301,976, including $687,884 in salary in 2014.
SWA CEO Gary Kelly was paid $5,002,785, including $675,000 in salary.
Alaska CEO Bradley Tilden was paid $3,468,722, including $436,769 in salary.
JetBlue CEO Dave Barger was paid $1,459,636, including $600,000 in salary.
Hawaiian CEO Mark Dunkerley was paid $3,103,945, including salary of $655,625.
Virgin Am CEO David Cush was paid $4,628,757, including salary of $665,000.
Delta, Spirit and Allegiant have not yet issued their proxy statements.
United Continental boss paid $12.8 million in 2014 | | Dallas Morning News