1. Frank Rubio: Holds the NASA file for the only longest spaceflight at 371 days.
  2. Peggy Whitson: Holds the NASA file for probably the most cumulative days in house at 675 days.
  3. Oleg Kononenko (Roscosmos): Holds the world file for probably the most cumulative time in house, having spent over 1,000 days throughout a number of missions. ​
  4. Scott Kelly: Scott Kelly is known for spending nearly a yr aboard the ISS underneath the One 12 months Mission. He flew to the ISS twice, along with his longest single flight lasting 340 days.
  5. Jeff Williams: He was the file holder of cumulative time of 543 days in house till he was surpassed by Whitson
  6. Christina Koch: She established a file for the longest solo spaceflight of 328 days by a feminine astronaut whereas on board the ISS from March 2019 to February 2020. 
  7. Valeri Polyakov: Polyakov holds the world file for the longest single steady keep in house aboard Russia’s Mir house station from January 1994 to March 1995.