The credits will expire two years after being put into your Westjet Bank. If you have any questions or concerns concerning the Westjet Airlines Future Credit, please contact us at. You may need to cancel your airline ticket while travelling for a variety of reasons. The non-refundable cost will be credited to your Westjet Bank account and can be used for future travel with us. Please contact us at +1 (805)-309-5415 if you have any questions about the Westjet Airlines Future Credit.