Originally Posted by BOS-NWA
OK. I checked First/mileage upgrade for NW 387 May 27 BOS-DTW. It is available for $430+30,000 miles and fare basis is H3E254N.
So does it mean that R class is available? But why didn't I get an upgrade now at 5-day Plat window if there is R seat?
I only need one R seat

Perhaps one opened up and they've yet to run EUA on that flight? R-class is available since you're pulling up the standard mileage award that draws from R-class seats.
NW's been going nuts with their EUA lately. I wouldn't lose hope, though, with 4 seats showing and still many days for the EUA to pick you up. Out of curiosity, why'd you choose a A319 on the BOS-DTW route (a heavy elite route) instead of a 757? Scheduling, perhaps?