There aren't any that provide a flat rate toll free access, that I know of.
I travel the US all the time. I've found
Earthlink/Mindspring to have pretty good coverage in other than tiny towns.....but sometimes finding the local access number is a pain. (You have to call a toll free number) Another option is to get a $10 a month Netzero account, which will cover a lot of the larger cities, and use a prepaid phone card for your access when there isn't a local number. You can pick these generic LD cards up at most major discount stores......ranging from 5 cents a minute, up. (Wal mart, Kmart...anywhere)
There aren't a lot of internet cafes in the US.
I think Mindspring and AOL offer toll free access.......but that will cost you the $20 plus monthly rate, and a per minute add on fee.
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