Yes, similar to Shradh rituals, some Pandits and specialized service providers in Prayagraj now offer remote or online Asthi Visarjan services.
Process: You would need to securely ship the ashes (following all regulations) to the designated Pandit or service provider. They will then perform the immersion ritual at the Triveni Sangam on your behalf at an agreed time. Often, they provide options for live video streaming (via WhatsApp, Zoom etc.) so you can witness the ritual remotely, or they send photos/videos afterward.
Consideration: While physical presence is traditionally preferred, this is a valid option for those genuinely unable to travel. Ensure you choose a highly reputable and trustworthy Pandit/service, confirm all details, and understand how the process will be conducted and verified.