The transition from First Officer (FO) to Captain in 2026 depends on "seniority" and total flight hours, but the average timeline is currently 5 to 12 years at a major airline. While the FAA requires a minimum of 1,500 hours for an Airline Transport Pilot (ATP) certificate, most major carriers won't consider an FO for upgrade until they have at least 3,000 to 5,000 total hours and significant "time on type." In 2026, the "pilot shortage" has slightly accelerated this process at regional airlines, where upgrades can occur in as little as 2-3 years. However, at legacy carriers, the process is slower because it depends on a "vacancy" being created by a retiring Captain. The upgrade process itself involves rigorous "Captain Upgrade Training," which includes advanced leadership simulations, a grueling check-ride, and a high-stakes oral exam focusing on emergency authority and crew resource management.