Although the lines for passengers at the Dover ferry port are progressively getting shorter, travellers are still advised to plan for a lengthy trip.
By midday, more than 17,000 passengers had boarded boats despite traffic and customs delays.
Customers were advised by P&O Ferries to allow three to four hours on Saturday to go through security checks and local roads.
Queues were encountered by passengers travelling by Eurotunnel on their way to the Folkestone terminal.
On the way to Dover, the AA issued a three- to four-hour delay warning.
Due to the summer break for most schools in England and Wales, this weekend is one of the busiest for UK tourists travelling abroad.
Dover was expected to see an additional 10,000 vehicles on Saturday in addition to the 8,500 that did so on Friday.
Due to the traffic, authorities in Kent declared a major incident on Friday. Long lines of people were waiting to go via Dover since the roads to the ferry terminal were congested.
On the eastbound M2, four-mile-long traffic lines also developed.
Additionally, 3,000 vehicles are waiting to cross the English Channel. On the M20 outside of Dover, they are temporarily stalled while vacation traffic is given priority.
UK authorities asserted that the delays were due to a shortage of French border agents, but Calais MP Pierre-Henri Dumont refuted this claim.
He said that insufficient port capacity and increased checks following Brexit were to blame.
On Saturday, the operator of Eurotunnel advised passengers to arrive two hours earlier due to traffic jams on the highways leading to the terminal in Folkestone.
According to John Keefe, director of public affairs for Eurotunnel, Friday’s collision on the M20 had created traffic delays due to the motorway being closed to all but freight traffic and diverting travellers to A-roads.
