Canada airline WestJet cancels more than 400 flights after a surprise strike by mechanics union The Associated PressWestJet cancels hundreds of flights after aircraft mechanics strike CNNWestJet strike: More flight cancellations over the long weekend CP24WestJet cancelled 407 flights after union wnet on surprise strike New York Post WestJet cancels 407 flights as mechanics strike in surprise move on busy long weekend CBC.ca