Business class upgrades unpredictably fluctuate as the departure date approaches, and while they can get cheaper, they often do the opposite. In 2026, airlines use sophisticated "dynamic pricing" algorithms that monitor remaining inventory. If a flight has many unsold business class seats 24–72 hours before departure, the airline may send "discounted" upgrade offers via their app or at the online check-in window to maximize revenue. However, if the cabin is nearly full, the price will skyrocket or the option will vanish entirely. A common 2026 strategy is to check the "Manage My Booking" section daily starting one week out. While "last-minute" bargains at the airport check-in desk still exist, they are becoming rarer as airlines prefer to sell those upgrades digitally before the traveler even arrives at the terminal. Essentially, waiting until the last second is a "high-risk, high-reward" gamble that works best during off-peak seasons or on mid-week flights.