He also expressed support for a ban on face coverings, like the burka.
Taking to the stage at a press conference in Dover, alongside party leader Nigel Farage, Yusuf claimed emergency measures were justified because the UK is being “invaded” by migrants and “the patience of the British people is now exhausted”.
Describing the almost 200,000 migrants who arrived by small boat in the last eight years as “an invasion”, he said this was “more than stormed the beaches of Normandy on D-Day”.
“A Reform government will launch an emergency programme to track down, detain and deport all illegal migrants in the UK,” he said.
“We will embark on mass deportations using chartered flights with five departures every single day.
“To guarantee success an RAF plane will be on standby in the event of mechanical issues. These flights will not be delayed.”
Yusuf had earlier told BBC Breakfast that Reform had “modelled a total of £2bn a year for this programme”.
He said: “That’s a fraction of the amount the British people spend on just accommodation for illegal migrants in this country,” he said. “It’s going to pay for itself many, many times over.”
He also claimed Reform could tackle the problem of countries like Pakistan refusing to accept deported citizens by denying them visa rights.
Yusuf said Pakistan had the “highest overstay rates of any country”, yet had “routinely refused” to allow these citizens to be returned from the UK.
“In order that we issue visas I think it’s very, very reasonable that we say you should take back the citizens of your country that have overstayed in our country and are here illegally and are a drain, in many cases, on resources in this country.”
The Labour government has announced it would clamp down on asylum claims from people who had arrived in the UK on a student visa.