CA: IAH-SIN R/T 19,950mi = $731 (3.66cpm)
Routing IAH-PEK-SIN on CA (Air China) = 19,950 miles
Books into U, so limited mileage earning potential with most *A (50% on UA)... but maybe some may benefit from it.
Few dates in May
more in August
... and lots in September/October!
-pilluelo