Copying from the “gym model,” companies have set up unlimited flights for a single monthly fee, typically about $2,000 a month or less. This model has not gone mainstream yet. If you want to travel around the U.S. as often as you like there are four choices: OneGo, SurfAir, Rise and Beacon. These four companies offering unlimited flights for less than $2,000 a month, but make sure you know their rules. to take full advantage.