In February 2014, if you are a Diamond frequent Delta flier from West Coast cities into JFK - prepare to get comfy in coach. Delta has selected flights to/fro LAX, SFO and Seattle into JFK and eliminated Diamond unlimited upgrades replacing them with only 4 (yes 4!) Global upgrade certificates.

Now we all know they don't sell out the business class on these flights so why do this to their most loyal fliers...and why only West Coast? I hear it's because (1) they are testing to see if the Diamonds will now actually purchase the business class seats once they are taken away from them and (2) it's a "test case" for many, many other Delta routes. In other words, if they start selling business class seats on the West Coast routes, then look out Atlanta and others...they are going to roll it out wider.

As for myself, I will indeed start buying business class seats...but on any other airline - not Delta. Not going to reward them with more of my $$ on a stunt like this.