I've tried this before, it's a fucking nightmare lol it's not full-duplex at all so this severely limits your ability to do things at a reasonable speed for most shit. For me it was because at the time Zuckerbutt was giving out 'free' internet in the third world, but only for whatsapp, instagram, and facebook, so me and my friends wanted to see if this was exploitable, but it was just way too slow. It really gave me an impression of how fast TCP runs at normally which I took for granted before, and ideally bidirectionally fast.

For airport wifi I use a DNS tunnel or simple MAC rotation, for in-flight... well if they could make it quality someday maybe but every time I've shelled out like 50 bucks for an hour or whatever the ripoff deal is it doesn't work well enough to do anything. I hear the DNS tunnel method does work on some of them though, I should try that someday.

As a side note those in-flight screens in the backs of seats are interesting in this 'why the hell would they do this' kind of way. I managed to crash one when I noticed it had a USB port (bad idea on their part)... It was super easy, I tried to read the USB key but then just removed it when it was accessing the thing and the whole thing just went down. Apparently it was running x-windows on some type of *nix because I could see that default background with an X for the cursor. They should really get rid of those because I'm sure that they could be misused for nefarious ends.