Soyuz family

Soyuz 2.1a

ActiveRussia Progress Rocket Space Center

The Soyuz 2.1A converted the flight control system from analog to digital, which allowed launch from fixed platforms. It also allowed big fairings and payloads. It is currently used for crewed Soyuz and Progress flights to the ISS.

Flights flown581 scheduled

Success rate98.3%57/58

Payload to LEO7,020kg

Cost per kg to LEO$11,396$80M per launch

Maiden flight2004-11-04

Peak year20237 flights

Soyuz 2.1a is built by Progress Rocket Space Center of Russia. It first flew on 8 November 2004.

Flight record

59 records

98.3% success rate57 of 58 flown · 1 failed

2004peak 2023 · 7 flights2026

First flight2004-11-08

Latest flight2026-07-14

Failures1

Consecutive successes51

Fastest turnaround7d 6h

Payload

Per mission profile

Low Earth orbit	7,020kg
Sun-synchronous orbit	4,230kg
Geostationary transfer orbit	2,810kg
Launch cost	$80M
Cost per kg to LEO	$11,396

Vehicle

Stages	3
Length	46.3m
Diameter	2.95m
Launch mass	312t
Liftoff thrust	4,149kN
Maiden flight	2004-11-04
Reusable	No

Pads used

3 pads

31/650 43/4 (43R)8 43/3 (43L)1

Orbits delivered

2 orbits

Low Earth Orbit48Sun-Synchronous Orbit4

Compare

Same payload class

vs Soyuz U vs Tsiklon-3 vs Tsiklon-2 vs Long March 2D vs Vostok 8A92M vs Long March 3B/E

Launch history

59 launches

Date	Mission	Pad	Orbit	Outcome
2026-07-14	Soyuz 2.1a \| Soyuz MS-29	31/6	Low Earth Orbit	Success
2026-04-25	Soyuz 2.1a \| Progress MS-34 (95P)	31/6	Low Earth Orbit	Success
2026-03-22	Soyuz 2.1a \| Progress MS-33 (94P)	31/6	Low Earth Orbit	Success
2025-12-25	Soyuz 2.1a \| Obzor-R No.1	43/4 (43R)	Sun-Synchronous Orbit	Success
2025-11-27	Soyuz 2.1a \| Soyuz MS-28	31/6	Low Earth Orbit	Success
2025-09-11	Soyuz 2.1a \| Progress MS-32 (93P)	31/6	Low Earth Orbit	Success
2025-07-03	Soyuz 2.1a \| Progress MS-31 (92P)	31/6	Low Earth Orbit	Success
2025-04-08	Soyuz 2.1a \| Soyuz MS-27	31/6	Low Earth Orbit	Success
2025-02-27	Soyuz 2.1a \| Progress MS-30 (91P)	31/6	Low Earth Orbit	Success
2024-11-21	Soyuz 2.1a \| Progress MS-29 (90P)	31/6	Low Earth Orbit	Success
2024-10-31	Soyuz 2.1a \| Kosmos 2579 (Bars-M No. 6)	43/4 (43R)	Sun-Synchronous Orbit	Success
2024-09-11	Soyuz 2.1a \| Soyuz MS-26	31/6	Low Earth Orbit	Success
2024-08-15	Soyuz 2.1a \| Progress MS-28 (89P)	31/6	Low Earth Orbit	Success
2024-05-30	Soyuz 2.1a \| Progress MS-27 (88P)	31/6	Low Earth Orbit	Success
2024-03-23	Soyuz 2.1a \| Soyuz MS-25	31/6	Low Earth Orbit	Success
2024-02-15	Soyuz 2.1a \| Progress MS-26 (87P)	31/6	Low Earth Orbit	Success
2023-12-01	Soyuz 2.1a \| Progress MS-25 (86P)	31/6	Low Earth Orbit	Success
2023-09-15	Soyuz 2.1a \| Soyuz MS-24	31/6	Low Earth Orbit	Success
2023-08-23	Soyuz 2.1a \| Progress MS-24 (85P)	31/6	Low Earth Orbit	Success
2023-05-24	Soyuz 2.1a \| Progress MS-23 (84P)	31/6	Low Earth Orbit	Success
2023-03-23	Soyuz 2.1a \| Kosmos 2567 (Bars-M No. 4)	43/3 (43L)	Sun-Synchronous Orbit	Success
2023-02-24	Soyuz 2.1a \| Soyuz MS-23	31/6	Low Earth Orbit	Success
2023-02-09	Soyuz 2.1a \| Progress MS-22 (83P)	31/6	Low Earth Orbit	Success
2022-10-26	Soyuz 2.1a \| Progress MS-21 (82P)	31/6	Low Earth Orbit	Success
2022-09-21	Soyuz 2.1a \| Soyuz MS-22	31/6	Low Earth Orbit	Success
2022-06-03	Soyuz 2.1a \| Progress MS-20 (81P)	31/6	Low Earth Orbit	Success
2022-05-19	Soyuz 2.1a \| Kosmos 2556 (Bars-M No. 3)	43/4 (43R)	Sun-Synchronous Orbit	Success
2022-03-18	Soyuz 2.1a \| Soyuz MS-21	31/6	Low Earth Orbit	Success
2022-02-15	Soyuz 2.1a \| Progress MS-19 (80P)	31/6	Low Earth Orbit	Success
2021-12-08	Soyuz 2.1a \| Soyuz MS-20	31/6	Low Earth Orbit	Success
2021-10-28	Soyuz 2.1a \| Progress MS-18 (79P)	31/6	Low Earth Orbit	Success
2021-10-05	Soyuz 2.1a \| Soyuz MS-19	31/6	Low Earth Orbit	Success
2021-06-29	Soyuz 2.1a \| Progress MS-17 (78P)	31/6	Low Earth Orbit	Success
2021-04-09	Soyuz 2.1a \| Soyuz MS-18	31/6	Low Earth Orbit	Success
2021-02-15	Soyuz 2.1a \| Progress MS-16 (77P)	31/6	Low Earth Orbit	Success
2020-10-14	Soyuz 2.1a \| Soyuz MS-17	31/6	Low Earth Orbit	Success
2020-07-23	Soyuz 2.1a \| Progress MS-15 (76P)	31/6	Low Earth Orbit	Success
2020-04-25	Soyuz 2.1a \| Progress MS-14 (75P)	31/6	Low Earth Orbit	Success
2020-04-09	Soyuz 2.1a \| Soyuz MS-16	31/6	Low Earth Orbit	Success
2019-12-06	Soyuz 2.1a \| Progress MS-13 (74P)	31/6	Low Earth Orbit	Success
2019-08-22	Soyuz 2.1a \| Soyuz MS-14 Uncrewed	31/6	Low Earth Orbit	Success
2019-07-31	Soyuz 2.1a \| Progress MS-12 (73P)	31/6	Low Earth Orbit	Success
2019-04-04	Soyuz 2.1a \| Progress MS-11 (72P)	31/6	Low Earth Orbit	Success
2018-07-09	Soyuz 2.1A \| Progress MS-09 (70P)	31/6	Low Earth Orbit	Success
2018-02-13	Soyuz 2.1a \| Progress MS-08 (69P)	31/6	Low Earth Orbit	Success
2017-10-14	Soyuz 2.1a \| Progress MS-07 (68P)	31/6	Low Earth Orbit	Success
2017-06-14	Soyuz 2.1a \| Progress MS-06 (67P)	31/6	Low Earth Orbit	Success
2016-03-31	Soyuz 2.1a \| Progress MS-02 (63P)	31/6	Low Earth Orbit	Success
2016-03-24	Soyuz 2.1a \| Bars-M No. 2 (Kosmos 2515)	43/4 (43R)		Success
2015-12-21	Soyuz 2.1a \| Progress MS (62P)	31/6	Low Earth Orbit	Success
2015-06-05	Soyuz 2.1a \| Kobalt-M (Kosmos 2505)	43/4 (43R)		Success
2015-04-28	Soyuz 2.1a \| Progress M-27M	31/6		Failure
2015-02-27	Soyuz 2.1a \| Bars-M (Kosmos 2503)	43/4 (43R)		Success
2014-10-29	Soyuz 2.1a \| Progress M-25M (57P)	31/6	Low Earth Orbit	Success
2014-07-18	Soyuz 2.1a \| Foton-M No. 4	31/6		Success
2014-05-06	Soyuz 2.1a \| Kobalt-M (Kosmos 2495)	43/4 (43R)		Success
2013-04-19	Soyuz 2.1a \| Bion-M No. 1	31/6		Success
2004-11-08	Soyuz 2.1a \| GVM Oblik	43/4 (43R)	Low Earth Orbit	Success
TBD	Soyuz 2.1a \| Soyuz MS-30	31/6	Low Earth Orbit	Scheduled

Specifications from Launch Library 2 by The Space Devs, launch records from Space Index. Derived figures are computed here; see sources and method.