One of the nice things about the new PEDs being allowed on Delta jets is that, according to Sky Magazine, that “Wireless Mouse, Keyboard or Other Accessory” are now allowed. This to me means bluetooth devices are just fine now.
There are many different apps to share your wifi or cell connection to other bluetooth enabled devices. As an Android user I chose PDAnet+ as it is simple and works for me. I just enable the app as you can see and then share the connection.
Then, on my other devices, like a tablet, I just go to the bluetooth settings and one of the options paired to my phone is to connect to the interent via bluetooth. On my laptop, there is a program that is included to link up via USB or bluetooth.
Either way, if you are likely to have more than one device online at a time or to say share your connection with your other devices this is one workaround. – René