Passengers who fly to Gatwick's South terminal will no longer have to be transferred by bus from the plane to the terminal.
The airport is officially opening its new £24m route at the terminal for domestic arrivals.
There have been several trials of the new entrance and a Gatwick spokesperson says it should make things easier for passengers.
Under aviation rules, international and domestic passengers have to be kept separate, which is why a bus had to be used to ferry passengers to the terminal.
This also meant passengers could not go through the usual baggage area but the new route at the terminal has its own baggage belt for domestic flyers.