A Saskatoon father received an early Father's Day gift when he was surprised with the opportunity to visit his sick son in an Alberta hospital. 

Marc Grimard was the unsuspecting subject of a heartwarming online video created by WestJet and Ronald McDonald House Charities. 

Marc Grimard Joel

Marc Grimard (left) and his son, Joel, were reunited in a heartwarming online video created by WestJet and Ronald McDonald House Charities. (YouTube)

The organizations arranged to have Marc's position with Saskatoon Transit filled for a week and flew him to Edmonton to be with his son, Joel, who has a congenital heart condition. 

Medel Villena, a customer service agent with WestJet, trained with Saskatoon Transit before covering Grimard's shift for a week. 

Villena says working in the bus barns was hard work, but helping out a family in need was worth it.

"It's just a great feeling knowing that the little thing that I did bought them a little bit of time to spend some quality time together," he said.

Grimard's supervisor says he's a family oriented, genuine kind of guy, and is very happy they could play their part.

"Saskatoon Transit is more than happy to have been involved in something like this," said Maintenance Manager Paul Bracken. "We believe this is an absolutely fabulous thing."

People at Saskatoon's Ronald McDonald House also say they are thrilled the family could be reunited.

"It's great when a family can be together," said Director of Family and Volunteer Services Marceline Zimmer. "We've seen in our research and our literature that when a family is together, that child heals faster."

Marc's wife Angela has been in Edmonton with their son for the past three and a half months.

For every 100,000 video views, to a maximum of 500,000, WestJet has pledged to bring together a Ronald McDonald House family.