Family-level launch record combining canonical variants, historical missions, public cadence forecasts, and available payload performance specs.
Historical missions are grouped by actual launch year. Forecast cadence uses family-level launch-rate rows.
| Year | Historical missions | Forecast launches |
|---|---|---|
| 2017 | 1 | 0 |
| 2018 | 2 | 0 |
| 2019 | 3 | 0 |
| 2020 | 1 | 0 |
| 2021 | 1 | 0 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
| 2024 | 1 | 0 |
Payload capacity by variant and target orbit when structured capacity rows are available.
| Variant | Orbit | Capacity | Altitude | Inclination | Source |
|---|---|---|---|---|---|
No performance specsNo structured payload capacity rows are linked to this vehicle family. | |||||
Latest launched missions using variants in this family.
| Mission | Variant | Launch |
|---|---|---|
| USA 353 Mission | Delta 4H B | Apr 9, 2024 |
| USA 345 Mission | Delta 4H B | Jun 22, 2023 |
| USA 338 Mission | Delta 4H B | Sep 24, 2022 |
| USA 314 Mission |
Canonical variants rolled up into this launch vehicle family.
| Variant | Stages | Missions | Status |
|---|---|---|---|
Delta 4H | Not stated | 8 | Retired |
Delta 4H A | Not stated | 5 | Retired |
Delta 4H B | Not stated | 3 | Retired |
Delta 4M | Not stated | 3 | Retired |
Delta 4H A |
| Apr 26, 2021 |
| USA 311 Mission | Delta 4H A | Dec 11, 2020 |
| GPS III SV02 Mission | Delta 4M+(4,2) A | Aug 22, 2019 |
| WGS 10 | Delta 4M+(5,4) A | Mar 16, 2019 |
| USA 290 Mission | Delta 4H A | Jan 19, 2019 |
Upcoming mission rows with announced launch timing.
| Mission | Variant | Announced |
|---|---|---|
No forecasted missionsNo upcoming announced mission rows are linked to this vehicle family. | ||
Delta 4M+(4,2) | Not stated | 13 | Retired |
Delta 4M+(4,2) A | Not stated | 2 | Retired |
Delta 4M+(5,2) | Not stated | 1 | Retired |
Delta 4M+(5,2) A | Not stated | 2 | Retired |
Delta 4M+(5,4) | Not stated | 4 | Retired |
Delta 4M+(5,4) A | Not stated | 4 | Retired |
The Delta IV Heavy configuration completed 15 launches including the NROL-68 mission.
The final Delta IV Heavy is scheduled to launch in 2024 as United Launch Alliance transitions its future missions from the East and West Coasts to the Vulcan rocket.
The Delta IV Medium configuration completed 29 launches from 2002 to 2019, including 25 National Security Space Launch (NSSL) missions, three NASA missions, and one commercial mission.
A United Launch Alliance Delta IV Heavy rocket carrying the NROL-68 mission for the National Reconnaissance Office launched on 2023-06-22 at 5:18 a.m. EDT from Space Launch Complex-37 at Cape Canaveral Space Force Station.
SLC-6 was reactivated in the 1990s for a handful of Lockheed Martin Athena launches and was turned over to United Launch Alliance in 2006 for the Delta 4 program.
The U.S. Space Force’s Space Systems Command, the National Reconnaissance Office, and United Launch Alliance are preparing to launch a Delta IV Heavy rocket no earlier than 2023-04-20 from Space Launch Complex 37B at Cape Canaveral Space Force Station, Florida.
NSSL Delta IV Medium launches began in 2006 and completed in 2019.
Pituffik Space Base hosts the 12th Space Warning Squadron, which is part of Space Delta 4 headquartered at Buckley Space Force Base, Colorado.
The Delta IV family has a record of 15 Delta IV Heavy launches including the NROL-68 mission.
Following the NROL-68 launch, the final Delta IV Heavy is projected to launch from Cape Canaveral Space Force Station in 2024.
NROL-68 will be the 10th Delta IV Heavy vehicle launched from Cape Canaveral Space Force Station, Florida.
NSSL has two remaining Delta IV Heavy launches procured under the Launch Vehicle Production Services contract.
The Delta IV Medium configuration recorded 29 launches from 2002 to 2019, comprising 25 NSSL launches, three NASA launches, and one commercial launch.
The National Security Space Launch program has launched a total of 37 Delta IV vehicles comprised of 25 Mediums and 12 Heavies.
Space Delta 4’s 2nd Space Warning Squadron at Buckley Space Force Base in Colorado is operating SBIRS GEO-6 and all systems are performing nominally.
Vandenberg Space Force Base hosted the final Delta IV Heavy launch of the National Reconnaissance Office mission NROL-91.
A United Launch Alliance Delta IV Heavy rocket carrying the NROL-91 mission for the National Reconnaissance Office lifted off on 2022-09-24 at 3:25 p.m. PDT from Space Launch Complex-6 at Vandenberg Space Force Base.
United Launch Alliance plans to retire the Delta IV Heavy in 2024 to make room for the Vulcan rocket.
A United Launch Alliance Delta IV Heavy rocket carrying the NROL-91 mission for the National Reconnaissance Office lifted off on 2022-09-24 at 3:25 p.m. PDT from Space Launch Complex-6 at Vandenberg Space Force Base.
The Delta 4 vehicle last flew in April 2021 when it launched NROL-82.