Heathrow Airport plans to cancel 260 flights on Sunday, 20% of its incoming and outgoing traffic, after the Met Office forecast 2-6cm of snow.
The hub airport suffered significant disruption today after 100 flights were cancelled due to weather conditions.
The decision to change Sunday's schedule was made to minimise anticipated problems caused by the ongoing bad visibility.
More top news
On English votes for English laws Ed Miliband is damned if he does and damned if he doesn't.
School fees, pricey private medical care and the fear of interest rate rises mean even those on £200,000 are feeling the pinch.
Overnight it will be cooler and fresher but most places will stay dry with a nippy start to Sunday.