USAirways; June 30,2012
United; DASH-8/July 2013 but can be terminated by April 2010 as log as 6 months notice is given by UAL, CR2's/April 2010. The CR7's get a little tricky, but 2018 is the farthest date note don the contract.
Delta; November 2012.

Of course all those dates go out the window if MAG applies for bankruptcy protection.