**SpaceX's September 2026 launch cadence centers on sustained Falcon 9 operations from Vandenberg for polar-orbit Starlink batches, alongside Cape Canaveral missions for Crew-13 and O3b mPOWER satellites.** Confirmed or targeted flights include Starlink Group 15-23 (Sep 2) and 15-24 (Sep 6), the crewed Crew-13 mission (Sep 12), O3b mPOWER 11-13 (NET Sep 19), SDA Tranche 1 Transport Layer A (NET September), and Starship Flight 14 as a potential wildcard. Florida Starlink flights have largely transitioned to Starship, concentrating Falcon 9 activity at Vandenberg while historical monthly rates hover near 8–10 missions. Close market-implied odds around 12 launches reflect variables like additional Starlink slots, weather or range delays, and possible Starship slippage during reusability testing, with traders weighting operational tempo against typical schedule variability.