The Met Office has issued two rare red weather warnings for high winds of us to 90mph covering the south-west of England, the south-east and south Wales.
Yellow and amber warnings for wind, snow and heavy rain are also in place across much of the rest of the UK, with people generally advised not to attempt to travel on Friday (18 February) and to stay at home.
Storm Eunice, though, comes during the tail-end of half-term, disrupting outbound and return travel plans. While major airports remain open, travellers are warned to check with their airline before attempting to travel.
"We are working closely with our airline and air traffic control partners to get passengers safely away on their journeys as quickly as possible," said Heathrow.
"High winds and poor weather can cause last-minute delays, but we will do everything in our power to minimise any disruption. We recommend allowing extra time to get to the airport as some public transport services may be disrupted due to the weather. Please continue to check with your airline for the latest flight information."
Gatwick added: "Due to Storm Eunice, we are expecting very high winds on Friday 18 February, which could cause some delays and cancellations to flights. We advise passengers to allow plenty of time to get to the airport and to check the status of their flight with their airline."
Bristol and Cardiff airports, both of which fall into areas covered by the Met Office’s red weather warnings, told travellers to exercise caution and check with their airlines.
"A red warning has been issued by the Met Office for Friday 18 February from 7am to midday," said Bristol. "The wind is forecasted to reach 70-80mph at times. Please take precaution when travelling to and from the airport. There is likely to be some disruption to flight operations."
Cardiff added: "The Met Office has issued a red weather warning of high winds and adverse conditions. The extreme weather is likely to effect travel-related activities in the region where Cardiff airport is situated."
British Airways, Jet2.com, easyJet, Wizz Air, Aer Lingus and KLM were among carriers to suspend some flight operations on Friday morning, largely as a precaution. Disruption is expected until early afternoon.
Rail travel has been hit too, with many rail operators advising people not to travel and warning of speed restrictions in areas due to be affected by Storm Eunice, limiting journeys to 50mph. Network Rail engineers have been working round the clock dealing with fallen trees and damage to overhead power cables.
Great Western Railway has dramatically reduced services in south Wales, Devon and Cornwall and said it would "significantly reduce" long-distance routes. Other operators advising people not to travel on Friday include Avanti West Coast, CrossCountry, Great Northern, LNER, Southern and Thameslink.
