[sky13]

All the parks (MK/Epcot/AK/DHS) have buses running one-way from park to Disney Springs from 4pm onwards.

Before 4pm, some of the alternative options (if relying on Disney transport) are:

For all parks: Take bus from park to SSR, which is the closest resort to Disney Springs. Walk from SSR to Disney Springs. (I've not personally done this myself though so not sure how long this walk is, but I know it's walkable!)

MK: walk to Contemporary, take bus from Contemporary to Disney Springs.

Epcot: walk from International Gateway entrance to Beach Club, take bus from Beach Club to Disney Springs. (The other Boardwalk area resorts - Boardwalk, Yacht Club, Swan/Dolphin - would work as well, just that BC is the closest.)

DHS: walk (or take boat) to any of the Boardwalk area resorts (Boardwalk probably closest) and take bus to Disney Springs. Alternatively, take Skyliner to CBR, and take bus to Disney Springs from CBR.

AK: unfortunately no resorts within walking distance of AK. So would need to transfer at any Disney resort. Or take the AK-SSR bus then walk. Or if you want something picturesque, one potential option is take the bus to one of the Port Orleans resorts then take the boat from there to Disney Springs.