Booking a rideshare launch is the most common way for small satellites to reach orbit. It is also more than paying for a seat. Between the first inquiry and the moment your satellite separates from the rocket lie roughly eight months of deliverables, reviews and deadlines. This guide walks through the process step by step, using SpaceX's Rideshare Payload User's Guide and NASA's Small Spacecraft Technology report as primary sources.
Step 1: Define your requirements
Before you contact anyone, know these five things:
- Mass, including the separation system.
- Volume and interface: CubeSat dispenser, or a standard ring interface of 8, 15 or 24 inches, or a 4-point interface.
- Target orbit: SSO, mid-inclination LEO, GTO or beyond.
- Readiness date: when the satellite will realistically be tested and ready to ship.
- Flexibility: how much the orbit and launch date can change without hurting the mission.
Flexibility matters because, as NASA points out, on rideshares with a primary spacecraft the primary mission determines the orbit and schedule. The drop-off orbit usually does not match the secondary payload's needs perfectly. If your orbit is critical, consider a orbital transfer vehicle for the last mile or a dedicated launch.
Step 2: Choose the booking route
NASA describes two routes for rideshares: the customer works directly with the launch service provider, or uses a launch broker or launch integrator.
- Direct with launch provider: what you get Direct contract, you handle analyses, hardware and documents, best for Experienced teams and larger smallsats
- Launch broker: what you get Matching with a launch opportunity and support in negotiations, best for Teams that want help finding a slot
- Launch integrator: what you get Compatibility analyses, physical integration, often the dispenser or separation system, best for CubeSats and first-time operators
NASA notes that a broker usually does not provide integration services beyond coordinating the relationship, while an integrator ensures compatibility through analyses and physical integration.
Step 3: Pick a mission and reserve
SpaceX lets customers search flights and reserve online. According to SpaceX, SSO rideshare missions fly approximately every four months, with frequent launches to mid-inclination orbits. You select a plate: from a quarter plate with 50 kg included to a full XL plate with 300 kg included. Once SpaceX approves a reservation request, it sends a welcome package with the next steps. Prices start at $350,000 for 50 kg to SSO, see How much does it cost to launch a satellite?.
Step 4: Sign the contract and start licensing
The launch services agreement defines price, payment schedule, delay rules and liability. At the same time, start licensing. NASA stresses that the spacecraft owner or operator is responsible for licenses, whether or not an integrator is involved, including radio frequency licensing and, where relevant, remote sensing licensing and laser usage approval. Launch providers require proof of licensing before integration. See spectrum licensing and ITU filings.
Step 5: Work through the integration timeline
SpaceX's user guide shows a typical rideshare schedule after contract signature. Kickoff materials arrive shortly after signing, and document templates live in a customer portal.
- About 8 months: Mission analysis inputs due
- About 6 months: First range safety submissions due, start of launch campaign planning
- About 5 months: Initial launch campaign planning submissions due
- About 4 months: Second range safety submissions due
- About 3.5 months: Final mission analysis inputs due
- About 3 months: Final launch campaign planning submissions due
- About 2 months: Mission analysis completed, final range safety submissions, launch campaign readiness review, deadline to register deployed objects
- About 1 month: Launch campaign at the launch site
Customers must also review and sign the Rideshare Interface Control Document (ICD), confirming that the referenced documents and information are correct. SpaceX requires customers to register all deployed objects with the U.S. Space Force's 18th Space Defense Squadron and SpaceX Space Traffic Coordination no later than two months before launch.
Step 6: Meet the "do no harm" rules
Because many satellites share one rocket, rideshare payloads must not endanger each other. NASA explains that these rules usually restrict transmitters, mechanical deployments after separation and hazardous materials. SpaceX's guide gives concrete examples:
- Payloads target a separation velocity between 0.3 and 1.0 m/s.
- Attitude maneuvers wait at least 120 seconds after separation.
- Propulsive maneuvers wait at least seven days after separation.
- Transmitters may only be switched on after a minimum delay that depends on transmitter power and separation velocity.
These requirements affect your satellite design, so check them early, ideally before your design is frozen.
Step 7: Test, ship and deliver
The satellite must pass environmental testing before shipping, see environmental testing and thermal vacuum testing. Before delivery, the ICD is signed and a readiness review confirms the launch campaign schedule. SpaceX receives rideshare payloads at the launch site around L-30, about 30 days before launch, and processes them in a SpaceX facility. Payloads must be cleaned to the "visibly clean, highly sensitive" standard before integration.
Step 8: Separation and first contact
After separation, SpaceX provides a best-estimate separation state vector shortly afterwards. From then on, the customer is responsible for tracking and contacting the satellite. Book your ground station passes well in advance.
What if your satellite is late?
Delays are common in satellite projects. SpaceX allows customers whose payload is delayed to apply 100% of the money paid toward rebooking on a future mission, subject to a 5 to 10% rebooking fee. Other providers set their own terms, so read the delay clauses carefully before signing.
Checklist before you sign
- Is the drop-off orbit acceptable, or do you need a last-mile solution?
- Can your team meet a deliverable schedule that starts about eight months before launch?
- Have licensing processes started?
- Does your design meet the provider's separation, transmitter and maneuver rules?
- Who supplies the dispenser or separation system?
- What happens to your payments if you miss the launch?
Frequently asked questions
How far in advance should I book a rideshare launch?
SpaceX's typical schedule starts with mission analysis inputs about eight months before launch. Licensing and testing often take longer, so many operators book well before the satellite is finished.
Can I book a rideshare launch online?
Yes, SpaceX offers online reservation for its Smallsat Rideshare Program. Most other providers work through direct inquiry or through brokers and integrators.
When do I need to deliver my satellite?
For SpaceX rideshare, around 30 days before launch. Other providers set their own dates.
Do I need a launch broker?
No, but a broker or integrator can save time, especially for CubeSats and first missions. NASA notes that integrators may provide the dispenser or separation system.
Who tracks my satellite after separation?
The customer. SpaceX provides an initial state vector, but tracking and contacting the satellite is the operator's responsibility.
Related reading
Sources
- SpaceX: Smallsat Rideshare Program (accessed 4 October 2026)
- SpaceX: Rideshare Payload User's Guide
- NASA: Small Spacecraft Technology State of the Art, Integration, Launch and Deployment
Cover image: The Nanoracks-IRIS CubeSat is prepared for installation into its deployer, March 2023. Credit: NASA (jsc2023e031082), public domain.