The club is charging just £10 each for a spot on the coach for the 150-mile round trip to Surrey.
The coach leaves Shepherd Neame Stadium at 4pm sharp and also picks up at Medway Services before heading round the M25.
Supporters wanting a seat should call 07709 395001 or email the club via enquiries@favershamtownfc.co.uk.
Chairman Ray Leader said: "The team need all the support they can get for the replay.
"It's a massive boost to them to see and hear fans backing them at an away game, so we want to make it easy for them to join us."