I just booked a B fare to Tokyo for 2.5x the coach fare. There are 33 seats in business class. When I called to use the certificate, there aren't any seats available.

How are there no seats available? It's just because Delta is trying to bait and switch its best customers. So glad Southwest is finally in Atlanta. I now have a way to "reward" Delta.

For this trip I ended up buying an actual business class seat through LAX instead of direct and will give my money to Korean Airlines from Tokyo to Seoul and from Seoul back home.