VANCOUVER, July 1 -- A WestJet flight en route from west Canada's city of Vancouver to the eastern city of Toronto was diverted to Calgary in Alberta province Wednesday night after a bomb threat, WestJet spokesman Robert Palmer said.

The affected flight was WestJet 722, which took off from Vancouver at 5:14 p.m. local time, Palmer said in a statement.

The Boeing 737-700 carrying 30 passengers and five crew members landed safely in Calgary just before 8 p.m. local time. This was the fourth such incident targeting the airline in the past five days.

After WestJet found it to be "another hoax," the airline then managed to find seats for the passengers on Toronto-bound flights later Wednesday evening.

"We understand and appreciate that four false threats in five days is generating a great deal of interest and unfortunately, rumour and speculation," the WestJet statement said.

"We will not comment on these rumors nor will we share information about how we handle these incidents, for obvious reasons. We will continue to work closely with law enforcement to find those responsible. Safety remains our top priority and we will continue to be vigilant to keep our guests and our crews safe," the statement said.