If you need to get a hold of WestJet's customer service team but don't have the contact number readily at hand, you can use this website to request a callback. If You are wondering “How do I request a callback on WestJet?” Fill in your name, email address and phone number where given, then follow step-by-step instructions to complete the form for your specific inquiry. WestJet Call Back within 24 hours (Monday - Friday).