FLIGHTS have been cancelled and more face delays in England today due to thick fog.
The Met Office issued a yellow weather alert for dense mist which stretched all the way from Newcastle to Exeter.
The warning, which was in force until 10am, urged people to take extra care if venturing out during the “challenging” conditions.
It also advised bus, rail and air journey times could be slower or called off completely.
Forecasters said: “Large areas of fog have developed across much of England overnight with visibility of 50-100 metres in many places leading to some challenging travel conditions.
“Fog will gradually lift through mid to late morning.”
London City Airport experienced disruption, with 13 flights cancelled before 9.30am.
Hold-ups were expected on other routes throughout the day thanks to the “adverse” weather, a spokesperson added.
Some British Airways departures from Heathrow Terminal 5 are also impacted.
An airline spokesperson said: “Like other airlines, we’ve had to make a small number of changes to our schedule today due to Air Traffic Control restrictions resulting from fog in the London area.
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“We’ve apologised to customers whose flights have been affected and our teams are working hard to get them to their destinations as quickly as possible.”
Airports elsewhere in the country, including Gatwick and East Midlands, appear to be operating as normal.
Anyone with a ticket to fly on February 14 is urged check with their airline before making their way to the airport.
Temperatures hovered in low single figures in towns and cities last night, dropping to freezing with frost forming in more rural locations.
But today, once the fog clears, Brits are in for “spring-like” sunny spells and highs of 15C.
Met Office meteorologist Jonathan Vaultrey said: “Overnight there are still a good number of clear intervals around for Wales, England and parts of Scotland.
“That will allow for some fog patches to form.
“These could be quite dense across the south-eastern areas of England, perhaps up into the valley in the Vale of York as well where we’ve got some lighter winds.
“A chilly start for most of us on Tuesday morning and the fog, particularly in the South East, will gradually clear its way off through the morning.
“Once it does so, it will be another fairly fine day with good sunny intervals coming through.
“Further west, we’ve still got that cloud around so more to contend with here and that could produce the odd bit of showery rain here and there.
“But most places will generally stay dry throughout the day.”
He said the breeze will pick up in the West, proving “quite gusty” around coastal areas of Northern Ireland, southwest Scotland and down into the Isle of Man.
But overall, temperatures will be “a good number of degrees” above average for the time of year.
Many of us will see 11C to 13C, and those in Wales will enjoy 14C or even 15C.