Following a security alert, the Portadown to Newry Line has been closed and trains cancelled.
Enterprise services from Portadown to Dundalk have been cancelled and there are now bus transfers in operation for passengers. On arrival in to Dundalk trains will operate as normal to Dublin.
Extra Translink services for the matches at Croke Park have been completely cancelled. Affected passengers will be refunded on Monday.
AA Roadwatch has warned of heavy volumes on the roads south as a result of the cancellations.
Traffic is extremely heavy on the Dundalk inner relief road onto the M1 and on the M1 southbound from the N32 slip road back to the Airport Roundabout.