World's largest airline: Delta, Northwest in merger deal
http://www.usatoday.com/travel/fligh...st-merge_N.htm
The 64,000 frequent flyer mile question is what happens to the miles already accumulated on both airlines?
Fortunately, since both are part of the Sky Team Alliance I put as much as I can on Korean Air. Still, I doubt seriously if the NWA mileage will be honored equally since Delta is the surviving brand and Northwest goes the way of the dinosaur.