Wigan have offered fans free coach travel for their game at fellow Championship strugglers Fulham on Friday, 10 April.
The move comes the day after the Latics sacked manager Malky Mackay, who had just 138 days in charge.
Wigan 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."
Before their 1-0 loss at Middlesbrough on Good Friday, Wigan had won four games in a row away from home.
Their poor form at the DW Stadium is one of the reasons why the Latics have struggled this season, with no league win at home since August,
Wigan supporters wanting to take advantage of the free offer must contact the club before 14:00 BST on Wednesday, 8 April.