Just wondering what the Upgrade Class is for EK flights..

Trying to get a ticket from DXB-JFK-DXB.. my first leg is fine.. by the 2nd leg is no good.. There are standard J available.. and full biz upgrades.. but no economy to biz..

I figure it will be easier to check seatcounter daily than it will be to have to call skywards every day to see if anything opens up.