Yes, you can absolutely use Avios to upgrade on Qatar Airways in 2026, and it is considered one of the best uses of the currency following Qatar's full adoption of Avios as its reward unit. You can upgrade from Economy to Business Class (including the world-class Qsuite) or from Business to First Class. Upgrades can be requested online through the Qatar Airways website or app up until 2 hours before departure, or even at the check-in counter at Hamad International Airport. In 2026, the cost of an upgrade is calculated based on your original fare class; "Lite" or "Classic" fares require more Avios than "Comfort" fares. A 2026 "pro-tip" is to use the "My Calculator" tool on the Qatar website before you book, as it will tell you the exact amount of Avios needed to move from your current seat into a premium cabin for your specific flight.