The offer will provide coach travel for fans at each of the 32 away Third Round fixtures in order to reduce the environmental impact of the FA Cup. By logging onto www.carbonfootyprint.com, fans can pledge leave their car at home and travel by coach for free.
Hull City fans face the longest journey in Round Three with a 677 mile round trip to Plymouth Argyle. If 50 City fans travel in a coach together they will save over 4 tonnes of CO2, equivalent to powering a house for the entire football season.
Meanwhile the game at Plymouth is one of six chosen by the FA that children can attend for just £1.
Likewise, for the Football League's "Fans of the Future" campaign, children can get tickets for the home match against West Brom on 12th January for £1. The game is also being shown live on Sky Sports.