Separate the spacecraft's return from the astronauts' later return aboard another vehicle. This sequence prevents the September landing from being mistaken for the end of the crew's station stay.
Mission milestones from June 2024 to March 2025. Earlier launch delays and later certification decisions are not included.
Dates without a time use the local date of the event.
Starliner launched with two NASA astronauts, then docked with the International Space Station the following day.
Launch and docking were separate dates. This entry uses the launch date.
Starliner returned to Earth without astronauts while its original crew remained aboard the space station.
NASA assessed spacecraft performance separately from planning a safe return for the astronauts.
The Starliner test-flight astronauts returned to Earth aboard the SpaceX Crew-9 Dragon mission.
Their March return ended the extended station stay; it occurred months after Starliner itself landed.
Mission milestones from June 2024 to March 2025. Earlier launch delays and later certification decisions are not included.