Charlton fans driving to home games should be aware that London's Ultra Low Emission Zone (ULEZ) will be expanded to create a single, larger zone up to the North and South Circular Road from October 25th. Drivers of vehicles that don't comply will face a charge of £12.50 if they enter the zone.
The charge will apply for every home game from the Doncaster match on 30th October
You can check here to find out if your car meets the emissions standards and what fees you may need to pay:
https://tfl.gov.uk/modes/driving/check-your-vehicle/
Valley Express prices have been reduced to £10 per game. Maybe worth considering ?