The Prime Minister used a hastily-arranged press conference in Downing Street to urge peers to rally round his deportation bill.
His comments came after the Commons passed his Rwanda plan by a majority of 44 after fears it could be defeated by Tory rebels.
He said: “There is now only one question: Will the opposition in the appointed House of Lords try and frustrate the will of the people as expressed by the elected House or will they get on board and do the right thing?”
He added: “It’s now time for the Lords to pass this Bill. This is an urgent national priority.
“The treaty with Rwanda is signed and the legislation which deems Rwanda a safe country has been passed unamended in our elected chamber.
Despite 11 Tory MPs voting against the legislation, he told the news conference that the Conservative Party had “come together” to pass the legislation.
Senior Tories including ex-Home Secretary Suella Braverman and ex-Home Office Minister Robert Jenrick voted against the bill.
Standing at a lectern with a ‘Stop The Boats’ sign, he called on Peers not to “frustrate the will of the people” saying it was time for them “to do the right thing”.
He took aim at Sir Keir Starmer and Labour saying they had no plan to tackle the small boats crisis.
The PM outlined how the number of migrants crossing the Channel was down by a third under his deterrent plans.
He said that Labour may “talk the talk but they have no plan”. He added Labour would give the green light to people smugglers.