Upgrading to Business Class on WestJet can help you travel comfortably. To request an Upgrade with WestJet, frequent flyers can use their loyalty points to bid for an upgrade or purchase one directly at the time of booking. Another option is to inquire about a WestJet upgrade at check-in or the gate if there are business-class seats available. Some passengers are also offered complimentary upgrades based on their frequent flyer status or if flights still need to be fully booked.