Fare class G and D
 

I was trying to use miles for a front cabin trip CLE to CDG. There was a lot of availability on Continental for the outbound, but only a Northwest flight for the return. I decided to go for it, but as I progressed, Co.com revealed that the CLE/EWR leg was a G class, and the Northwest return was a D class from Paris to Detroit, and an A from Detroit to Cleveland, with no explanation of what these classes are. Northwest's web site was no help.

I think because of the equipment on the CLE/EWR leg, the G might indicate that no front cabin seats are available (could G mean gotcha?) and I thought the D class on the Northwest Paris/Detroit leg might mean something like deferred until we can confirm with Northwest (I've seen a notice to that affect when buying a ticket that involves a leg on Alaskan), but I'm a bit reluctant to give up some of our hard-earned miles without knowing just what I am getting, since I noticed that when you buy a first class ticket, but one of the legs is on a plane without first class, they advise you, but apparently give you no break on the price.

When I tried to read the rules associated, all I got was a page saying read the rules associated with all legs, and the lowest class rules apply to the entire ticket, but it would never show me the actual rules.

Thanks
 

Thanks for the work digging that information out.