The Brentford FC Ticket Office has sold around 2,500 tickets for the Bank Holiday match against Milton Keynes Dons.
The Bees travel to Milton Keynes on Easter Monday, April 21, for a Sky Bet League One match.
Brentford have received around 3,000 advance tickets and most of these have gone.
They will be on sale until 3pm tomorrow, Good Friday, April 18.
Supporters are reminded they will not be available after the match against Preston North End, being played at Griffin Park tomorrow, but will be available at stadium:mk on Monday.
Bees fans travelling to the game are advised to buy tickets in advance as those paying on the day will have to buy them from the Away Ticket Booth at stadium:mk.
There may be long queues at the Away Ticket Booth and it is cash only for tickets bought on the day of the game.
Milton Keynes Dons have also advised Brentford that fans can buy tickets for the away section directly from them.
Tickets can be booked on the MK Dons ticketing website here.
Brentford fans will be in the North Stand at stadium:mk.
Those buying online can collect tickets from the MK Dons Box Office up to 12noon on Monday and thereafter from the Ticket Collection Point at Gate Six at the stadium.
Full ticket information and pricing can be seen here.
The Brentford FC Ticket Office will be open from 12noon tomorrow, Good Friday, for the sale of tickets.