Ryanair have said all flights to and from East Midlands, Leeds Bradford, Edinburgh and Glasgow airports are cancelled today.
A number of flights to and from Aberdeen have been cancelled this morning.
We told earlier how one Emirates flight was unable to land at the Glasgow airport today due to the red weather warning.
Dublin Airport announced that all flights will be suspended from 3pm this afternoon, with Aer Lingus and Ryanair cancelling all flights out of Ireland for Friday, March 2.
"We apologise for the inconvenience caused however this decision has been made in the interest of the safety of customers and our employees".
Glasgow Airport is now closed and has been since 7am this morning.
British Airways said the "very poor" weather conditions will continue to affect some of its flights.
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The airport had been closed all day yesterday but reopened this morning after staff worked from 4am today to clear the runway of snow.
Jet 2 has tweeted, "We are now advising travel as normal, and would notify our customers should there be any updates".
"Our teams have been clearing snow continually since Tuesday evening and will continue to do so throughout the day".
The airport tweeted earlier: "Morning!"
Edinburgh Airport remains open, but passengers are urgedto check with their airline before travelling.
"We believe that closure at 6pm gives us the best opportunity to prepare for tomorrow, when we are expecting further disruption". We understand that the fluidity of the situation can be frustrating and we thank passengers for their ongoing patience and support.
The airport's twitter reads: "Our runway is now closed with an estimated opening time of 2pm. Delays and some cancellations are expected".