Flights from Britain have been banned until midnight tomorrow.
Only ferry crossings for freight will be allowed after a new strain of Covid-19 in England has shown to spread up to 70 times faster.
The EU member states will meet today to discuss its response to the variant.
Minister Eamon Ryan says the Government can't rule out the possibility of that new mutated strain being here.
No decision was made by the Northern Ireland executive last night on whether travel from Britain should be banned.
It's expected discussions between the parties will continue later today.
Meanwhile, it did agree to reduce the five-day Christmas relaxation to just one day - December the 25th.
A six week lockdown will come into force there on Stephen's Day.