Danny Provençal, 33, and Benjamin Hudon-Barbeau, 36, escaped from the facility northwest of Montreal at around 2:30 ET by climbing on board a helicopter with the help of a rope.
The jail's warden told police that Hudon-Barbeau and Provençal had grabbed a rope dropped from the helicopter to make their getaway, said Sgt. Benoit Richard.
Police located the chopper at around 3:30 p.m. in the Mont-Tremblant area, but only the pilot remained.
Police later arrested Hudon-Barbeau and two other suspects 50 kilometres north of Saint-Jérôme. Hudon-Barbeau is alleged by police to have ties to the Hells Angels, Radio-Canada reported.
Police said the pilot was taken to an area hospital to be treated for shock.
"He's going to be questioned later on by investigators … within the next couple of hours," Richard said, adding that it's too early to say what the pilot's role was in the escape.
'Ready to die'
A Montreal radio station, 98.5 FM, received a call Sunday from a man claiming to be Hudon-Barbeau, who said he was "ready to die" as he tried to evade police.
A little over a month ago, the Saint-Jérôme detention centre experienced a mini-riot by about a dozen prisoners.
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In that incident, police had been asked to secure the outside of the prison, which holds about 480 inmates, and facility staff used pepper spray to disperse the mob.