Breakdown service Green Flag said those taking to the roads were likely to make round-trips averaging 125 miles over the holiday period.
The company reckoned 10.30am on Saturday would be the peak time for congestion, with 10.30am on Good Friday also likely to be very busy.
It added that drivers were likely to spend around £360 million on fuel this Easter, a 145% increase on the Easter 2012 total.
Stansted airport is expecting more than 220,000 passengers through the terminal over the Easter weekend.
This is some of the advice from Stansted:
- Check your flight status with your airline's website before you leave home
- Pack liquids, gels and pastes in hand luggage into a clear re-sealable plastic bag
- Check the latest security information on the airport website
- Arrive at the airport two hours before your flight's departure time
Stansted Airport expects over 220,000 passengers to pass through the terminal across the Easter bank holiday weekend as Brits head-off to sunnier climes and Europe's ski resorts.
It's the busiest part of the year so far at the Essex airport has people also head in from aboard.
Hundreds of thousands more air travellers will also take to the skies over the remainder of the week as new routes launch and many seasonal destinations return as the new summer flying schedule comes into operation.
Southend Pier will re-open in time for Easter. It was closed after a fishing trawler crashed into it in February, damaging the walkway.
It happened just as repairs were being completed on previous damage, caused by a barge hitting the pier five months earlier.
An Easter strike by ground staff at Stansted Airport has been called off.
GMB union members were due to walk out for four hours on Friday, Saturday and Monday in a dispute over pay.
Union members employed by Swissport had voted for strike action after claims they were facing cuts of up to £1,000 a year because of shift changes.