Swiss Air permits passengers to upgrade their seats to the higher class cabins in several ways. Travelers may use the miles, place a bid, or pay in cash during check-in, but it depends on the seat availability. The Swiss Air Upgrade also provides benefits to passengers, such as bigger seats, priority boarding, dedicated assistance, and more baggage. If you want to learn more about upgrades, you can contact Swiss Air customer service or read the blog on the Airlines Group Travel website. Read more: https://www.airlinesgrouptravel.com/blog/how-to-get-upgrade-with-swiss-air