In my working years were on the road alot with the work teams and needed internet. The sat internet was big flop for us - too much money up front and never knew if it was going to work or not.
We went with VERIZON and their air cards back in the day. These worked almost everywhere we went.
I now use the VERIZON MIFI unit which is a stand alone unit and provides a WIFI hotspot for about 60-feet around the unit. I can connect to this unit with up to five of my internet devices. This works anywhere a Verizon cell phone works. I got into it when the rates were lower and got setup for 3GB at $27 a month. I think they are 5GB plan now for $50 a month. This runs all of the tablets, portable computer, etc that have WIFI capability.
The MIFI 2200 (they have a newer version out now) fits in the palm of your hand or shirt pocket, has a good 4hrs on internal battery or runs from a 120VAC xfmr plug. We are completely happy with the service we get with ours using the VERZION Network for checking emails, bank accounts, keeping up with the kids... I carry my Dell 17-inch M90 laptop computer and the wife has her HP 11-inch portable... Connects to the internet everytime we turn them on. No wires connected.
photo from google images
NOTE: I just read the post from Mr TEXAS about his service with VERIZON and yes it is true "total" coverage of the US is not available with Verizon. It certainly has been the best coverage for us in our travels anyway all over the south and southwest as far as OKLA and TEXAS. All cellphones in the back roads of ALA and MISS is a bad spot for us as well. These are mostly run by mom and pop companies I think.. Even here at our VA stick home VERIZON was bad until they finally put up another tower somewhere. It was like green acres here as you almost had to climb a telephone pole to clear the 300-foot ridge we live under to get the service. The wifes family was living outside of Bonham TX (Gober, TX) and coverage was bad there as well.