Lufthansa currently operates 3 C-Class only flights, these are:
LH408
MUC-
EWR 737
LH412
DUS-
EWR 319
LH436
DUS-
ORD 319 (I think, maybe a 737 as well)
If memory serves, 408/412 operate 6 days a week, while 436 goes daily.
LH seems to be satisfied with the performance of these flights and might add up to 5 more routes in the coming years. All airplanes are equipped with 48 seats.
I was also under the impression that
SQ was going to do the
SIN-
LAX/
SFO on a C-only (or mostly-C?) A340-500.
SailorOrion