Easiest upgrade to get (r space) from IAD to Europe
I tried doing a search and found nothing. I was looking for flights to Europe next July (yes that far away) and saw no R space from IAD/EWR/ORD to lhr. Granted its a long time from now but I was a little surprised. Is this because I'm so early in looking? Or is lhr very low on r space? Which European destination from IAD (or EWR or ORD) has most consistent r space? I would probably fly on a Tuesday-Thursday to optimize my chances! Thanks for any help! And if there is a thread about this, please direct me. Thanks.