They are following the advice of the Safety Advisory Group, an independent body made up of representatives from the local authorities - including Northumbria Police, the Tyne and Wear Fire Brigade and the Northumbria Ambulance Service.
The group have been monitoring Cardiff City fans at away games and have decided that because of persistent standing they must reduce the normal allocation.
A statement on the official Sunderland website reads
"As with the recent games against West Ham and Leeds United where the visitors ticket allocation was reduced, we respect the decision of the Safety Advisory Group and will of course abide by it as the safety of all supporters must be our priority.
"It is regretable however that the failure of other local authorities to impose sanctions, such as reduced ticket allocations, to control the problem of persistent standing has left the Safety Advisory Group with no option but to implement these measures, which unforrtunately impact on well-behaved supporters as well as those who persistanlty stand."
City's game at West Ham on Sunday February 6th is another "bubble" trip. Fans can only travel on organised coaches for the 1pm kick off at Upton Park.
The same is happening this Saturday for the trip to Leeds. Tickets for West Ham are on sale at the ticket office.