In Scotland, Glasgow Airport reports that it will remain closed for the rest of the day.
Shannon handled 20 flight diversions alone from Dublin and Cork Airports starting from 04.20 on Wednesday morning until midnight.
Glasgow Airport is now open again after it was forced to entirely shut down yesterday, but more than 70 flights have been cancelled.
By mid-morning on March 1 Glasgow Airport had said there will be no arrivals or departures before 15:00 local time.
RYANAIR and Aer Lingus have cancelled flights from Dublin Airport for tomorrow morning after the red weather warning was extended.
Nationwide, 2,334 flights had been canceled and another 896 delayed as of 10:50 a.m. ET, according to flight-tracking service FlightAware.
Dublin airport will remain closed until at least Saturday morning, as a result of the continuing adverse weather conditions across the United Kingdom and Ireland. The airport's Airline Moves project - when Gatwick's three biggest airlines switched terminals over a 72-hour period - was also cited by judges. It is important that passengers only travel to the airport if their airline confirms their flight is flying.
"It means 96 per cent of today's services are scheduled, however, there are delays so the advice remains that passengers should check the status of their flights with their airlines".
"The weather warnings suggests no significant snow at Edinburgh Airport overnight", an airport spokeswoman said.
Train services are not operating on any route on Friday.
Now, a second red alert has been issued for the south west of Britain from north of Cardiff to south of Exeter, as Storm Emma approaches from the Atlantic adding to the "Beast from the East".