Jet2.com and Ryanair were among those to urge passengers travelling on Wednesday (20 November) to check their arrangements.
Met Office yellow warnings for snow and ice were issued for large parts of the UK on Tuesday (19 November), with many remaining in place on Wednesday.
These cover the East Midlands, East of England, London and the South East, the North East, the North West, Northern Ireland, Scotland, the South West, Wales, the West Midlands, and Yorkshire and Humber.
It comes after temperatures fell below freezing in parts of the country on Tuesday, with some areas experiencing their first snowfall.
Jet2 said its operations team was continually monitoring the forecast, and stressed – "as usual" – it planned to operate all of its flights as scheduled.
However, it warned there could be disruption if the weather worsens. "The Met Office has warned wintery conditions are due to impact parts of the UK in the coming days," said the airline and operator.
Jet2 passengers are advised to arrive at their departure airport and check in as normal, and to follow any updates sent via text or email.
It’s a cold start to Wednesday morning with widespread frost across the country 🥶
— Met Office (@metoffice) November 20, 2024
Wintry showers continue to affect northern Scotland and coastal regions through the morning, but expect plenty of sunshine further inland ☀️
Stay #WeatherAware ⚠️ pic.twitter.com/7oQmffo92l
Ryanair, meanwhile, warned of potential disruption to flights to and from the UK on Wednesday owing to snow and ice.
"Affected passengers will be notified and any passengers travelling to/from the UK on Wednesday 20 November should check their Ryanair app for the latest updates on their flight," said the budget carrier.
"We regret any inconvenience caused to passengers by these weather conditions, which are outside of Ryanair’s control and affect all airlines operating to/from the UK on Wednesday 20 November."
Earlier this week, Manchester airport said it was taking steps to minimise any disruption owing to the cold weather, posting a picture to X (formerly Twitter) of its fleet of snow clearing equipment.
Manchester Airport is operating as normal this morning despite light, wet snow overnight.
— Manchester Airport (@manairport) November 19, 2024
We encourage all passengers travelling today to check travel conditions before setting off and to allow extra time for their journey to the airport pic.twitter.com/nyPbxWdj1f
On Tuesday, it said: "Manchester airport is operating as normal this morning despite light, wet snow overnight.
"We encourage all passengers travelling today to check travel conditions before setting off and to allow extra time for their journey to the airport."
