I don't pay attention to NW fares (only *A), but I am looking for cheap flights for some friends who prefer NW. Particularly, I am looking for fares during the last 2 weeks of July. When I search with flexible travel dates on Travelocity, many of the NW fares have a latest travel date of June 8th, if any. It seems to be that way for fares from several different cities I checked (GSP, NYC, BOS, FLL).

Does anyone know when they will start publishing fares that will cover through the end of July? I realize that some of the fares currently published don't have a latest travel date, but I'm just trying to estimate when the fares with a date would be published to wait and see if those might be cheaper. Hopefully you NW gurus know the answer.

Thanks.