Hmmm......I'm guessing the codeshare flight is still out of the question for the reasons described above. I am flying on rewards miles, so would CO really lose money if I flew on their NW codeshare?

Flying standby at a coterminal might be possible, however? Did you have to use the $25 confirmed standby option to fly at a coterminal? It sounds like you just drove to the airport and used a regular standy option.

Thanks again for all the help!