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Residual launch capacity, listed

Cargo capacity that is already flying.

Every commercial launch leaves margin on the table. CharterSpace.IO lists it — see the mass, volume and launch window before you talk to anyone, and request a quote from the provider that holds the slot.

Browse open availabilities
How it works
  • 11open listings
  • 18launch sites
  • 29 Sep 2026next launch window

Why there is capacity to list

Margin on every manifest

A rideshare mission sells to its manifest deadline and lifts off with mass and volume unsold; a dedicated mission carries a primary payload well under the vehicle’s capability. That residual capacity is real, it is perishable, and until it is manifested it is worth more to the operator sold than empty.

CharterSpace.IO lists it. Search what is open on upcoming launches, see the operator’s own figures for mass, volume and launch window, and request a quote from the provider that holds the slot.

Rideshare mission, after manifest closeResidual
Dedicated mission, under its primary payloadResidual
The full track is the vehicle’s lift; the fill is what is left once the primary manifest is set — the part that gets listed.

How CharterSpace.IO works

Three steps, one reference number


  1. Search residual capacity

    Filter open capacity by vehicle, departure site, destination, available mass and volume, and launch window. Every listing shows the operator’s own figures — not an estimate we generated.


  2. Request a quote

    Pick a leg and submit a quote request with your cargo details and export-control declarations. Pricing is by quote: residual capacity is priced against what is left and when, so there is no rate card to publish.


  3. Track your booking

    Follow every request and booking from your dashboard — status, launch window, and the reference number that appears on every email we send you about it.

New to empty legs? Start with How It Works

Live listings

Open capacity right now

Browse open availabilities


Capacity is listed and booked quickly, and most of it is gone within days of appearing. Working out which launch sites you can realistically ship to? Start from your city.

Vehicle pages

Real hardware, published figures

Each vehicle shown here has a live page with the published payload figure behind the numbers you filter on — and a real, credited photograph of real hardware.

See the full vehicle fleet


See what is open on the next launches.

Search by vehicle, departure site, destination, mass, volume and window. No account needed to look.

Browse open availabilities
Talk to us

Holding capacity you are not selling? List it on CharterSpace.IO.

CharterSpace.IO is a marketplace, not a launch operator, and listed capacity is not guaranteed — read what we are, and what we are not, the Risk Disclosure and the Prohibited Cargo Policy before you request a quote.