Most accumulated time on spacewalks by a female

The woman astronaut with the most cumulative time on spacewalks (known at NASA as extra-vehicular activities, or EVAs) is Sunita Williams (USA), who had spent a total of 62 hours 6 minutes working on the exterior of the International Space Station as of 30 January 2025.

Sunita Williams is an Indian-American engineer and pilot from Euclid, Ohio. She joined the US Navy in 1987 and qualified as a helicopter pilot in 1989. She flew sorties in the Persian Gulf during the 1991 Gulf War and went on to qualify from the Navy Test Pilot School in 1993. She was accepted as an astronaut candidate in 1998 as part of Group 17 ("The Penguins") and first flew to space in December 2006, traveling to the ISS on the space shuttle Discovery as part of Expedition 14. This mission saw her make her first spacewalk (known as an Extra-vehicular activity) on 31 January 2007.

On 30 January 2025, Sunita Williams and Barry "Butch" Wilmore conducted a 5-hr 26-min spacewalk, the 274th in the history of the ISS programme, to remove some redundant radio equipment and carry out microbial analysis of various vents around the station's life-support systems. This spacewalk, the ninth of Williams's career, saw her surpass the total spacewalk time of her fellow astronaut Peggy Whitson.

Williams and Wilmore were originally supposed to be short-term visitors on the ISS, having arrived there as part of the Boeing Crewed Flight Test mission in September 2024. Doubts about the reliability of the prototype spacecraft's thrusters, however, led NASA to opt to send it back empty. Williams and Wilmore, both veteran astronauts, were rolled into the ISS's crew rotation schedule, joining Expedition 71. They are expected to return to Earth in the spring of 2025.