A statement on Ryanair's website said the airline's flights from Stansted and Luton were affected by the wintry conditions.
All Ryanair flights from Stansted and Luton this morning will be affected. Passengers should check the status of their flight on the ‘flight info’ section of Ryanair.com.
More top news
Emergency services have declared a "major incident" in Leicester following reports of an explosion.
Parts of the UK will feel colder than the Arctic Circle in the coming week as bitter winds make it feel -15C in some places.