Getting into space is still difficult - if you don't have a mass driver. Linear acceleration catapults make up the bulk of any modern spaceport. These are magnetic accelerators, that pull a rocket-sled along often tens of miles of magnetized rails. Cargo drivers that don't move living, biological humans can be much shorter, but the spaceports that transport living human beings require very long acceleration stretches to allow for a gradual increase of G's.

Most space traffic off Earth's surface goes towards the Moon. The lower lunar gravity allows for a better energy / acceleration ratio, and thus makes Luna a better point of departure for interplanetary travel.

Rocket-sleds accelerate a payload and detach, allowing for repeated reuses.

Spacecraft use fusion-powered drives to traverse the void.

Most biological humans are put into hibernation for interplanetary travel, which takes anywhere from a little over a month between Earth and Mars or Venus up to several months between Earth and Mercury, or up to multiple years if one tries venturing into the outer system.