Here's how the 3-day WestJet strike is impacting flights at Toronto Pearson Airport

WestJet flights have been cancelled or delayed at Toronto Pearson International Airport on Tuesday in the wake of a mechanics' strike over the weekend.

The strike lasted three days and saw the cancellation of 1,137 flights, according to the Calgary-based airline. More than 100,000 guests were impacted and 55 of the airline's 180 fleet remain grounded.

Live updates as of 7 p.m.:

• At least 33 WestJet flights were delayed at Pearson airport Tuesday, with five additional delays reported in the last hour, according to FlightAware. No additional flights were cancelled

Live updates as of 6 p.m.:

• At least 28 WestJet flights were delayed at Pearson airport Tuesday, with one additional delay reported in the last hour, according to FlightAware. No additional flights were cancelled

Live updates as of 4 p.m.:

• The total number of delayed WestJet flights at Pearson reached 27 after two additional flights were delayed Tuesday afternoon, FlightAware data shows. No additional flights were cancelled

Latest updates as of 3 p.m.:

• FlightAware data shows one additional WestJet flight was delayed Tuesday afternoon, bringing the total to 25. No additional flights were cancelled

Latest updates as of 2 p.m.:

• One additional WestJet flight was delayed at Pearson, bringing the total number of delayed flights to 24, according to FlightAware. No additional flights were cancelled

Latest updates as of 1 p.m.:

• At Pearson, 23 WestJet flights have been delayed and no additional flights have been cancelled, FlightAware shows

Latest updates as of 11 a.m.:

• 17 WestJet flights have been cancelled and 16 have been delayed at Pearson, according to FlightAware

Latest updates as of 10 a.m.:

• No additional WestJet flights have been cancelled at Pearson this hour while one more flight was delayed, bringing the delays to 15

Latest updates as of 9:30 a.m.:

• 72 WestJet flights have been cancelled and 43 have been delayed across the country, FlightAware shows 

Latest updates as of 9 a.m.:

• 17 WestJet flights at Pearson have been cancelled, according to FlightAware
• 14 WestJet flights at Pearson have been delayed, according to FlightAware

Latest updates as of 8 a.m.:

• 13 WestJet flights at Pearson have been cancelled on Tuesday, according to FlightAware
• Across Canada, 68 WestJet flights have been cancelled and 35 have been delayed, FlightAware reports

WestJet said further cancellations will be required in the coming days as the airline ramps back up its regular operations, according to a statement on Monday.

In order to do so, WestJet said flight crews need to be transported to airports across the country. That will include retrieving crew members who were stranded while the strike took place, the airline added.

President of WestJet Airlines and Group Chief Operating Officer Diederik Pen said the airline is working around the clock to get the 55 grounded planes back in the sky.

“We are grateful to be recovering our operation; however, we fully recognize the continued impact on our guests and sincerely appreciate their patience and understanding,” Pen said. 

This is a developing news story. More details to come.