The AA says it expects a rush on Wales' roads over the weekend
Simon Calder, a travel journalist, says the disruption at London Paddington train station could continue into the weekend.
A number of services, including trains to and from south Wales, were cancelled after signalling problems caused major disruption to a line.
Flooding has led to disruptions to services between Chester and Wrexham General in north Wales.
Although it's currently fairly mild, the outlook is a bit more unsettled with the risk of wet and windy weather, which could affect the Christmas getaway.
It's always one of the busiest periods on the roads, so check the weather and traffic before heading off and plan accordingly. If you're travelling with children, take plenty of things to keep them entertained and break up any journey more than three hours long.
– Andy Smith, AA
Many breakdowns are preventable, so take a few minutes to do the basic checks on your car. Don't forget to top up the windscreen wash, check and clean your lights, and adjust tyre pressures for a full load, if required.
Also don't take a chance with the weather, so pack a few extra warm and waterproof layers, food, water, torch, fully-charged mobile and an atlas or sat-nav in case of any unexpected diversions.
Motorists are being warned to expect delays on major roads as the Christmas getaway starts.
AA Roadwatch and Trafficmaster say that roads are likely to be busy as most schools break up on Friday and many people will be travelling for Christmas.
- Friday and Saturday are expected to be the busiest days for travel
- 60% of AA members plan to drive over the festive period
- 55% AA members in Wales plan to drive over Christmas