It is the second bout of snowfall this year in north Kent, dubbed the mini Beast from the East, after blizzards at the end of February caused road and rail disruption lasting several days.
Widespread snow across the United Kingdom overnight has hit transport links, with police forces in the worst-hit regions urging people to avoid non-essential road travel.
Amber warnings for snow and ice are in place from 4pm on Saturday until 9am on Sunday for northwest England, Yorkshire and the Midlands, as well as in London, the South East, and east of England.
Travel disruption is likely, rural communities could become cut off, vehicles may be stranded and power cuts could occur, forecasters have warned.
The Cardiff City away game against Derby is also one of a number of events to be called off.
Mark Wilson, a Met Office meteorologist, said: "It's going to be a very, very cold start, with a widespread frost and ice around as well". Bristol airport was closed on Sunday morning but opened by midday.
MET OFFICE MET OFFICE FORECAST The south-east and parts of Scotland will see snow on Friday
Majority were short haul routes but a few longer British Airways flights to NY and Chicago also had to be postponed.
Highways England's head of road safety, Richard Leonard, said gritter lorry drivers would be working "around the clock", though he also stressed it was important for drivers to take care.
Great Western Railway advised passengers not to travel on Sunday, while Arriva Trains Wales said all lines were blocked between Newport South Wales and Hereford.
Snow and ice has gripped the United Kingdom again.
A weather warning will remain in place across the North East until tomorrow.. "Some injuries from slips and falls on icy surfaces are expected".
To find out if it will snow in your area and when, you can visit UK Snow Map.
Devon County Council has said more than 250 schools will close on Monday following the severe weather, while dozens of school closures were reported in Somerset, Gloucestershire and parts of Wales.More news: Nidahas Trophy 2018, India vs Bangladesh, Final: Hits and Misses