Hy.Does you wireless laptop work on a canadian highway?Or in the forrest?
Usually ,the wireless signal is send to a distance of merely 30 m from the antena,so you should stay in the cafe in order to use their wireless provided service.
If the plane has a system for wireless connection of personal laptops or pda's then it should work.Otherwise,the moment you're inside the plane you'll see no signal on your device.
So,you should check with the airline company if they provide wiless acces onboard of their airplanes.