Why were so many Canadians on the plane that crashed in Iran?

Article Link: https://www.cbc.ca/news/world/canadians-plane-crash-iran-1.5419076

Discussion posted by: Arye ben-Shaoul

63 Canadians on Ukraine International Airlines flight to Kyiv had limited travel options The end of winter break for schools as well as limited travel options between Iran and Canada contributed to the loss of Canadian lives on board a flight bound for Kyiv that crashed shortly after takeoff from Tehran, according to a spokesperson for the Iranian Canadian Congress. All 176 people aboard Ukraine International Airlines flight PS752 were killed early Wednesday morning, including 63 Canadians. Many of the 63 were students, researchers or lecturers with ties to schools across the country.