<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by SDF_Traveler:
I'm doing a "reverse" of what you're doing tomorrow. I'm flying on a NWA ticket with NW outbound, but flying CO on my return the day after. I'm already checked-in & boarding passes are printed for my outbound on NW (too bad they don't give out the bonus every time I use nwa.com to check-in 
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As my return is on CO (NW codeshare flight #), I won't be able to use nwa.com online check-in. I wouldn't mind using a CO kiosk and doing it at the destination airport upon arrival, but I suspect the kiosks can only be used to check in for same-day travel (and the CO kiosk would reject me the day prior).
FWIW, would I be able to use CO's website to check in for NW codeshare / CO metal flights?
Best,
SDF_Traveler
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If the CO kiosks are programmed the same as the NW kiosks (I suspect they aren't), you can check in on the kiosk within the same time window as the internet (30 hours).