Originally Posted by
pbarnette
One earns 100% banked miles on CO flights with NW, as far as I can tell.
Personally, if one isn't chasing status, I would go with AS because of the ability to earn and burn on AA, as well. Between CO and NW, I would accrue with CO, since one can burn on VS. But this is ONLY if status is unimportant.
I stand corrected, I guess I was thinking EQM's where some fares offer fewer EQM's...
Crediting with AS for CO metal also does not accrue EQM's so if the OP is just interested in earning miles, AS is fine, otherwise status is not attainable on AS with CO flights unfort.