$5 bought me unlimited Internet access while flying from San Diego to Baltimore on Southwest Airlines and it was an offer not to pass up. 

And it was easy to access.  Once we followed the prompts on the phone, I was connected at 36,000 ft!   I began emailing my friends and telling them where I was, overlooking Santa Fe or Wichita, and what the latest news on my end was.  Their responses were immediate and amazed like I was to have such a good connection and no dropped messages.  My security connection was intact!

I played around with the Internet and searched airline fares on different airline websites and got the answers right away.  Ahh, technology in the sky, the only way to fly!