MPs and peers will return to Parliament later after the Supreme Court ruled that its suspension was unlawful.
Boris Johnson, who is flying back early from a UN summit in New York, faces calls to resign from opposition groups.
The PM has said he “profoundly disagreed” with Tuesday’s landmark ruling but he would respect it.
There would be no Prime Ministers’ Questions but urgent questions and ministerial statements would be heard, Commons Speaker John Bercow said.
On Tuesday, the court ruled it was impossible to conclude there had been any reason – “let alone a good reason” – to advise the Queen to prorogue Parliament for five weeks in the run-up to the Brexit deadline of 31 October.
Mr Johnson, who was attending the UN General Assembly in New York, spoke to the Queen after the ruling, a senior government official said, although no details of the conversation have been revealed.