The men were arrested by the Royal Canadian Mounted Police after allegedly "causing a disturbance", local media said.
A spokesman told the Winnipeg Sun: "None of the males resisted officers and all were escorted off the plane in handcuffs without incident."
The plane, an Airbus A330, landed in Winnipeg around 11.15am local time on Saturday morning and departed for Las Vegas just over two hours later.
Counter-terror officials are hunting for Mathlouthi Atef, 42, after he was flagged up as a "possible bomber", according to local media.
A mugshot of the Tunisian suspect has been circulated over fears he could strike bars, train stations and shopping centres in Rome.
The alert came after the Italian embassy in Tunisia's capital, Tunis, received an anonymous letter claiming a man was "ready to attack the centre of Rome".
The chilling threat was "considered reliable", according to Rome-based newspaper Il Corriere della Citta.Another newspaper, Il Giornale, reported that Atef is already known to police for drug dealing and "other minor crimes".Italy's military police force, known as the carabinieri, declined to comment.The Foreign Office website warns that "terrorists are likely to try to carry out attacks in Italy" and warns British tourists to be vigilant.It adds: "Attacks could be indiscriminate, including in places frequented by foreigners. There are isolated cases of domestic terrorism.
"Attacks carried out by the extreme left-wing and secessionist groups have generally been aimed at official Italian targets, mainly in the form of small bombs and incendiary devices.
"The Italian authorities have made a number of arrests of individuals with links to Daesh [Islamic State] and other extremist groups.
BEIJING
China pledged on Sunday to press ahead with market opening and reforms while reiterating that it will treat domestic and foreign firms equally and protect intellectual property rights.
The pledge on reform and equal treatment came from Vice Premier Han Zheng, at a time there are increasing prospects of a trade war with the United States.
Han, making his first speech since being named executive vice premier earlier this month, told the China Development Forum in Beijing that China needs to "open even wider to the outside world," and would do so via its Belt and Road Initiative.
China is fully aware that economic globalisation is "irreversible," said Han, adding that unilateralism and trade protectionism served nobody's interests.
Also at the forum, He Lifeng, chairman of the National Development and Reform Commission (NDRC), said China "will deepen supply-side structural reforms and work hard to eliminate ineffective supply".
LONDON
Facebook Chief Executive Mark Zuckerberg apologized to Britons on Sunday over a "breach of trust", taking out full page advertisements in British newspapers after a political consultancy got its hands on data on 50 million users.
"We have a responsibility to protect your information. If we can't, we don't deserve it," said the advert, signed by Facebook founder Zuckerberg.
The world's largest social media network is facing growing government scrutiny in Europe and the United States.
This follows allegations by a whistleblower that British consultancy Cambridge Analytica improperly accessed users' information to build profiles on American voters that were later used to help elect U.S. President Donald Trump in 2016.
The plain black text apology on a white background, with only a tiny Facebook logo, appeared in Sunday publications including The Observer - one of the newspapers whose reporting on the issue has sent Facebook's share price tumbling.
Yay confirmation
Glorious!