Summary of CST-100 Starliner missions
| Note |
Scheduled and ongoing missions are highlighted in italics, respectively; NET = No earlier than. Throughout tables the European time format (day/month/year) is used; all times are UTC. |
Last update: 20 January 2026
| Mission | Crew | Mission duration (crew) | Landing site | Purpose / mission highlights / noticeable events | |||
|---|---|---|---|---|---|---|---|
| no. | designation | vehicle (callsign) | (up/down) | lift-off | landing | ||
| CST-100 Starliner | |||||||
| – | Boe OFT(-1) | S3.1 (Calypso) | - | 20/12/2019 | 22/12/2019 | White Sands M.R. | unmanned Boeing Orbital Flight Test; scheduled docking to ISS failed due to wrong orbital insertion burn, forcing premature landing |
| – | Boe OFT-2 | S2.1 | - | 19/05/2022 | 25/05/2022 | White Sands M.R. | successful repetition of partially failed first Boeing Orbital Flight Test |
| Boe CFT | S3.2 (Calypso) | 2 / 0 | 05/06/2024 | 07/09/2024 | White Sands M.R. | first crewed demonstration flight to ISS, or Boeing Crew Flight Test; following various issues during docking to the ISS with the capsule's RCS thrusters as well as helium leaks detected in the service module, NASA ultimately decided to return Starliner Calypso uncrewed | |
| – | Starliner-1 | S2.2 | – | NET Apr 2026 | Q4 2026 | TBD | originally planned first commercial Starliner mission to ISS, carrying members of an Expedition crew; after major issues on the CFT mission, it was downgraded to an uncrewed cargo mission |