npm install @danielmoraes/fly-cli -g

$ fly-cli
Usage:
    fly-cli [command] <options>
Example:
    fly-cli search sao rio 2019-01-01
Commands:
    search <origin> <destination> <date>  Find the lowest fares by source

$ fly-cli search sao rio 2019-01-01
{ sources:
   [ { sourceName: 'Avianca', lowestFare: 169 },
     { sourceName: 'Azul', lowestFare: 187.1 },
     { sourceName: 'Gol', lowestFare: 175.17 },
     { sourceName: 'Latam', lowestFare: 195.84 } ],
  lowestFare: 169 }