Join Date: May 2012
Location: Munich, Algarve, Sussex or S.F Bay Area
Programs: Mucci, BA Gold, A3*Gold, LH SEN, HH Gold, Marriott Plat, IHG Plat Amb
Posts: 5,607
R class is used for booking OnBusiness redemptions and upgrades if that might have something to do with it. Also, R class is often only available on round-trip fares whilst D is almost always also available on a one-way fare. But then of course, this could all have nothing to do with it at all.