Re: Will this work? Input appreciated
It should be possible with an Eye-Fi card. I have an Eye-Fi card in my camera and can use my smartphone as a wifi hotspot that the Eye_fi card can connect to so that when I take a picture with my camera, it is transferred from the Eye-Fi card to my phone, uploaded to the Eye-Fi server, then downloaded automatically to my computer at home.
I have done this on the ground but can't say this will work from an airplane. I believe it should work as long as the smartphone can get a proper cell signal.
In your post, you talked of transferring the photos to a laptop, then upload to the cloud. How do you propose that the laptop be connected to the internet? If your laptop has a connection to the internet using something like a MiFi cellular router/modem then you could connect the Eye-Fi card directly to it and bypass the laptop. If you use a USB dongle cellular modem plugged into the laptop, then you could use software called Connectify to turn your laptop into a wifi hotspot that would allow you connect the Eye-Fi card to and do the same thing with your laptop that I do with my phone. The Connectify software can use the wifi in your laptop to receive data from the Eye-Fi and transmit it via the same wifi adapter, however, it isn't necessary to do that to accomplish what you want to do.