Phone ahead if you need help: If you need help making a reservation or have any other questions, please call our reservations team at 888-WESTJET (+1-(845)-422-8220) and we’d be happy to help. You can also try calling our customer service line online at westjet.com/contactus or by texting “help” to 88388. WestJet Airlines manages booking telephone number so that customers can easily access customer service in case they experience any difficulty with their reservations. If you do not use the manage booking phone number, you will be redirected to the online booking system.