Wigan have offered fans free coach travel for their game at fellow Championship strugglers Fulham on Friday, 10 April. The Latics sit 23rd and are eight points from safety with five games remaining.
"We have a huge five games ahead of us and we will keep fighting to stay in this division, starting on Friday," said chairman David Sharpe.
"We need the supporters to come to London and back the team.
"This is when we need to stick together as a football club, on and off the field, starting on Friday."