| Rank (Country) | Name | Age | Mission | Days since last mission |
| N/A | Virgil I. Grissom+ | 40 | Apollo 1 | N/A |
| 1.(USA 1) | Walter Schirra | 45 | Apollo 7 | 1,030 |
| 2.(USA 2) | James Lovell | 40 | Apollo 8 | 767 |
| 3.(USA 3) | Thomas Stafford | 38 | Apollo 10 | 1,077 |
| 3.(USA 3) | John Young | 38 | Apollo 10 | 1,032 |
| 5.(USA 5) | Charles Conrad+ | 39 | Apollo 12 | 1,156 |
| 6.(RUS 1) | Vladimir Shatalov | 43 | Soyuz 10 | 552 |
| 6.(RUS 1) | Alexei Yeliseyev | 36 | Soyuz 10 | 552 |
| 8.(USA 6) | David Scott | 39 | Apollo 15 | 865 |
| 9.(USA 7) | Eugene Cernan | 38 | Apollo 17 | 1,290 |
| 10.(RUS 3) | Oleg Makarov | 45 | Soyuz 27 | 1,011 |
| 11.(RUS 4) | Pyotr Klimuk | 35 | Soyuz 30 | 1,067 |
| 12.(RUS 5) | Valeri Bykovsky | 44 | Soyuz 31 | 762 |
| 13.(RUS 6) | Nikolai Rukavishnikov | 46 | Soyuz 33 | 1,584 |
| 14.(RUS 7) | Valeri Ryumin | 40 | Soyuz 35 | 234 |
| 15.(RUS 8) | Valeri Kubasov | 45 | Soyuz 36 | 1,171 |
| 16.(RUS 9) | Viktor Gorbatko | 45 | Soyuz 37 | 1,244 |
| 17.(RUS 10) | Vladimir Kovalyonok | 39 | Soyuz-T 4 | 861 |
| 18.(RUS 11) | Vladimir Dzhanibekov | 40 | Soyuz-T 6 | 451 |
| 19.(RUS 12) | Leonid Popov | 36 | Soyuz-T 7 | 453 |
| 20.(RUS 13) | Gennady Strekalov | 42 | Soyuz-T 10-1 | 159 |
| 21.(USA 8) | Vance Brand | 52 | Challenger 4 | 444 |
| 22.(USA 9) | Robert Crippen | 46 | Challenger 5 | 287 |
| 23.(USA 10) | Thomas Mattingly | 48 | Discovery 3 | 935 |
| 24.(RUS 14) | Georgi Grechko | 54 | Soyuz-T 14 | 2,742 |
| 25.(USA 11) | Karol Bobko | 48 | Atlantis 1 | 167 |
| 26.(USA 12) | Henry Hartsfield | 51 | Challenger 9 | 420 |
| 27.(USA 13) | Charles Walker | 37 | Atlantis 2 | 221 |
| 28.(RUS 15) | Leonid Kizim | 44 | Soyuz-T 15 | 527 |
| 29.(RUS 16) | Yuri Romanenko | 43 | Soyuz-TM 2 | 2,324 |
| 30.(RUS 17) | Vladimir Titov | 41 | Soyuz-TM 4 | 1,547 |
| 31.(RUS 18) | Viktor Savinykh | 48 | Soyuz-TM 5 | 985 |
| 32.(RUS 19) | Vladimir Lyakhov | 47 | Soyuz-TM 6 | 1,741 |
| 33.(USA 14) | Frederick Hauck | 47 | Discovery 7 | 1,413 |
| 33.(USA 14) | George Nelson | 38 | Discovery 7 | 985 |
| 35.(USA 16) | Robert Gibson | 42 | Atlantis 3 | 1,049 |
| 36.(USA 17) | James Buchli | 43 | Discovery 8 | 1,223 |
| 37.(USA 18) | Norman Thagard | 45 | Atlantis 4 | 1,459 |
| 38.(USA 19) | Brewster Shaw | 44 | Columbia 8 | 1,349 |
| 39.(RUS 20) | Aleksander Serebrov | 45 | Soyuz-TM 8 | 2,328 |
| 40.(USA 20) | F. Story Musgrave | 54 | Discovery 9 | 1,569 |
| 41.(USA 21) | Daniel Brandenstein | 46 | Columbia 9 | 1,660 |
| 42.(USA 22) | David Hilmers | 40 | Atlantis 6 | 513 |
| 42.(USA 22) | Richard Mullane | 44 | Atlantis 6 | 449 |
| 44.(USA 24) | Steven Hawley | 38 | Discovery 10 | 1,563 |
| 45.(USA 25) | Richard Covey | 44 | Atlantis 7 | 777 |
| 46.(USA 26) | Steve Nagel | 44 | Atlantis 8 | 1,983 |
| 46.(USA 26) | Jerry Ross | 43 | Atlantis 8 | 850 |
| 48.(USA 28) | Guion Bluford | 48 | Discovery 12 | 1,999 |
| 48.(USA 28) | Michael Coats | 46 | Discovery 12 | 771 |
| 50.(USA 30) | John Blaha | 48 | Atlantis 9 | 613 |
| 50.(USA 30) | Shannon Lucid | 48 | Atlantis 9 | 648 |
| 52.(USA 32) | John Creighton | 48 | Discovery 13 | 557 |
| 53.(RUS 21) | Aleksander Volkov | 43 | Soyuz-TM 13 | 2,141 |
| 54.(USA 33) | Frederick Gregory | 50 | Atlantis 10 | 727 |
| 55.(USA 34) | Ronald Grabe | 46 | Discovery 14 | 989 |
| 56.(RUS 22) | Aleksander Viktorenko | 44 | Soyuz-TM 14 | 757 |
| 57.(USA 35) | Charles Bolden | 45 | Atlantis 11 | 695 |
| 57.(USA 35) | David Leestma | 42 | Atlantis 11 | 954 |
| 57.(USA 35) | Kathryn Sullivan | 40 | Atlantis 11 | 695 |
| 60.(USA 38) | Bonnie Dunbar | 43 | Columbia 12 | 887 |
| 60.(USA 38) | Richard Richards | 45 | Columbia 12 | 624 |
| 62.(RUS 23) | Anatoli Solovyov | 44 | Soyuz-TM 15 | 718 |
| 63.(USA 40) | Franklin Chang-Diaz | 42 | Atlantis 12 | 1,012 |
| 63.(USA 40) | Jeffrey Hoffman | 47 | Atlantis 12 | 599 |
| 63.(USA 40) | Loren Shriver | 47 | Atlantis 12 | 824 |
| 66.(USA 43) | William Shepherd | 43 | Columbia 13 | 743 |
| 67.(USA 44) | David Walker | 48 | Discovery 15 | 1,304 |
| 68.(USA 45) | G. David Low | 37 | Endeavour 4 | 680 |
| 69.(USA 46) | M. Rhea Seddon | 45 | Columbia 15 | 857 |
| 70.(USA 47) | Thomas Akers | 42 | Endeavour 5 | 565 |
| 70.(USA 47) | Kathryn Thornton | 41 | Endeavour 5 | 565 |
| 72.(RUS 24) | Sergei Krikalyov | 35 | Discovery 18 | 680 |
| 73.(USA 49) | John Casper | 50 | Columbia 16 | 419 |
| 73.(USA 49) | Charles Gemar | 38 | Columbia 16 | 898 |
| 73.(USA 49) | Marsha Ivins | 42 | Columbia 16 | 573 |
| 73.(USA 49) | Pierre Thuot | 38 | Columbia 16 | 657 |
| 77.(USA 53) | Jay Apt | 44 | Endeavour 6 | 566 |
| 78.(USA 54) | Robert Cabana | 45 | Columbia 17 | 576 |
| 78.(USA 54) | Richard Heib | 38 | Columbia 17 | 792 |
| 80.(USA 56) | Mark Lee | 42 | Discovery 19 | 727 |
| 80.(USA 56) | Carl Meade | 43 | Discovery 19 | 806 |
| 82.(USA 58) | Michael Baker | 40 | Endeavour 7 | 708 |
| 83.(GRM 1) | Ulf Merbold | 53 | Soyuz-TM 20 | 985 |
| 84.(USA 59) | Donald McMonagle | 42 | Atlantis 13 | 208 |
| 85.(USA 60) | C. Michael Foale | 38 | Discovery 20 | 657 |
| 85.(USA 60) | James Wetherbee | 42 | Discovery 20 | 824 |
| 87.(USA 62) | Tamara Jernigan | 35 | Endeavour 8 | 861 |
| 87.(USA 62) | Stephen Oswald | 43 | Endeavour 8 | 693 |
| 89.(USA 64) | Ellen Baker | 42 | Atlantis 14 | 1,097 |
| 89.(USA 64) | Gregory Harbaugh | 39 | Atlantis 14 | 895 |
| 91.(USA 66) | Terrence Henricks | 43 | Discovery 21 | 808 |
| 92.(USA 67) | James Voss | 46 | Endeavour 9 | 1,009 |
| 93.(USA 68) | Ken Bowersox | 38 | Columbia 18 | 687 |
| 94.(USA 69) | Kenneth Cameron | 45 | Atlantis 15 | 1,075 |
| 95.(USA 70) | Brian Duffy | 42 | Endeavour 10 | 934 |
| 96.(USA 71) | Andrew Allen | 40 | Columbia 19 | 720 |
| 96.(SWS 1) | Claude Nicollier | 51 | Columbia 19 | 812 |
| 98.(USA 72) | Kevin Chilton | 41 | Atlantis 16 | 713 |
| 98.(USA 72) | Michael R. U. Clifford | 43 | Atlantis 16 | 713 |
| 98.(USA 72) | Linda Godwin | 43 | Atlantis 16 | 713 |
| 101.(USA 75) | Curtis Brown | 40 | Endeavour 11 | 552 |
| 101.(USA 75) | Daniel Bursch | 38 | Endeavour 11 | 586 |
| 101.(USA 75) | Mario Runco | 44 | Endeavour 11 | 1,216 |
| 104.(USA 78) | Susan Helms | 38 | Columbia 20 | 650 |
| 105.(USA 79) | William Readdy | 42 | Atlantis 17 | 1,100 |
| 105.(USA 79) | Carl Walz | 41 | Atlantis 17 | 786 |
| 107.(USA 81) | Kenneth Cockrell | 46 | Columbia 21 | 428 |
| 107.(USA 81) | Thomas Jones | 41 | Columbia 21 | 770 |
| 109.(USA 83) | Peter J.K. Wisoff | 38 | Atlantis 18 | 835 |
| 110.(USA 84) | James Halsell | 40 | Columbia 22 | 509 |
| 110.(USA 84) | Donald Thomas | 41 | Columbia 22 | 631 |
| 110.(USA 84) | Janice Voss-Ford | 40 | Columbia 22 | 791 |
| 113.(USA 87) | Charles Precourt | 41 | Atlantis 19 | 688 |
| 114.(USA 88) | Michael Gernhardt | 41 | Columbia 23 | 88 |
| 115.(USA 89) | N. Jan Davis | 43 | Discovery 23 | 1,281 |
| 115.(USA 89) | Kent Rominger* | 41 | Discovery 23 | 261 |
| 117.(FRA 1) | Jean-Loup Chretien | 59 | Atlantis 20 | 3,226 |
| 118.(USA 91) | Kevin Kregel | 41 | Columbia 24 | 517 |
| 119.(USA 92) | Terrence Wilcutt | 48 | Endeavour 12 | 494 |
| 120.(USA 93) | Richard Searfoss | 41 | Columbia 25 | 756 |
| 121.(USA 94) | Wendy Lawrence | 38 | Discovery 24 | 249 |
| 122.(RUS 25) | Sergei Avdeyev | 42 | Soyuz-TM 28 | 1,075 |
| 123.(USA 95) | Scott Parazynski | 37 | Discovery 25 | 398 |
| 124.(USA 96) | Nancy Currie-Sherlock | 39 | Endeavour 13 | 1,240 |
| 124.(USA 96) | James Newman | 42 | Endeavour 13 | 1,184 |
| 126.(RUS 26) | Viktor Afanasyev | 50 | Soyuz-TM 29 | 1,869 |
| 127.(USA 98) | Ellen Ochoa | 41 | Discovery 26 | 1,666 |
| 128.(USA 99) | Eillen Collins | 42 | Columbia 26 | 799 |
| 129.(FRA 2) | Jean-Francois Clervoy | 41 | Discovery 27 | 948 |
| 129.(USA100) | John Grunsfeld | 41 | Discovery 27 | 1,071 |
| 129.(USA100) | Steven Smith | 40 | Discovery 27 | 1,041 |
| 132.(RUS 27) | Alexander Kaleri | 43 | Soyuz-TM 30 | 1,326 |
| 133.(USA102) | Scott Horowitz | 43 | Atlantis 21 | 1,193 |
| 133.(RUS 28) | Yuri Usachyov | 42 | Atlantis 21 | 1,549 |
| 135. (USA103) | Leroy Chiao | 40 | Discovery 28 | 1,735 |
| 135. (USA103) | William McArthur | 49 | Discovery 28 | 1,796 |
| 137. (CAN 1) | Marc Garneau | 51 | Endeavour 15 | 1,656 |
| 137. (USA105) | Brent Jett | 42 | Endeavour 15 | 1,418 |
| 137. (USA105) | Joseph Tanner | 50 | Endeavour 15 | 1,388 |
| Country | Shortest | Longest | Average |
| USA (106) | 88 | 1,999 | 861.198 days (2.358 years) |
| RUS (28) | 159 | 2,742 | 1,157.500 days (3.169 years) |
| ROW (5) | 812 | 3,226 | 1,525.400 days (4.176 years) |
| Total (139) | 88 | 3,226 | 944.777 days(2.587 years) |
| Jean-Loup Chritien - France | 59 | Atlantis 20 |
| Shannon Lucid - USA | 48 | Atlantis 9 |
| Vance Brand | 52 | Challenger 4 |
| None Yet | Not Applicable | Not Applicable |
| Georgi Grechko | 54 | Soyuz-T 14 |
| None Yet | Not Applicable | Not Applicable |
| Pyotr Klimuk - Russia | 35 | Soyuz 30 |
| Wendy Lawrence - USA | 38 | Discovery 24 |
| Eugene Cernan | 38 | Apollo 17 |
| None Yet | Not Applicable | Not Applicable |
| Jean-Francois Clervoy - France | 41 | Discovery 27 |
| None Yet | Not Applicable | Not Applicable |
| Jean-Loup Chretien - France | 3,226 days (8.832 years) | Atlantis 20 |
| Bonnie Dunbar - USA | 887 days (2.429 years) | Columbia 12 |
| Guion Bluford | 1,999 days (5.473 years) | Discovery 12 |
| Georgi Grechko | 2,742 days (7.507 years) | Soyuz-T 14 |
| None Yet | Not Applicable | Not Applicable |
| None Yet | Not Applicable | Not Applicable |
| Michael Gernhardt - USA | 88 days | Columbia 23 |
| Kathryn Thornton - USA | 565 days (1.547 years) | Endeavour 5 |
| Gennady Strekalov | 159 days | Soyuz-T 10-1 |
| None Yet | Not Applicable | Not Applicable |
| Claude Nicollier - Switzerland | 812 days (2.223 years) | Columbia 19 |
| None Yet | Not Applicable | Not Applicable |