Research suggests traffic will be at its heaviest today and tomorrow, before it eases on Sunday and picks up again on Monday.
The weather is likely to be a big factor with more getaways and trips traditionally made when the sun is out.
Traffic hotspots are expected to be on the M25 at Wisley because of the ongoing works and between J7 for the M23 for Gatwick Airport and J16 for the M40.
The roads around Heathrow are also expected to be heavier than usual.
On SWR, the lines in the Teddington area will be closed all day from Saturday to Monday, due to maintenance work.
Passengers for the replacement bus services should change at Kingston.
Stay tuned to Jackie across the weekend for the latest traffic news.
