Thick fog has caused delays for thousands air passengers. Poor visibility led to 40 flights being cancelled at Heathrow airport. At London City Airport in Docklands nearly every early-morning service was either delayed or cancelled.
Major airports reported that they were back to "business as usual" after an air traffic control centre glitch caused chaos across the UK and Ireland.
Hundreds of flights were cancelled or delayed yesterday after problems arose at the National Air Traffic Service centre in Hampshire.
A spokeswoman for Heathrow Airport said: "Today we have 18 cancellations - 11 arrivals and seven departures - and that's mostly due to crew displacement. Apart from that we are pretty much running as normal."
A Stansted Airport spokesman said they had experienced no problems today, while a Gatwick Airport spokeswoman said: "We've been back to business as usual from this morning."
Thousands of passengers have been left stranded at all of London's airports after an unprecedented technical glitch.
Hundreds of flights have been cancelled or delayed and, as Luke Hanrahan reports, the knock-on effect means the problems could continue long into this evening.
Thousands of people have been affected after a technical problem at an air traffic control centre caused chaos at airports across the UK.
- Heathrow cancelled 217 flights so far today
- Gatwick cancelled five flights but experienced 86 delays
- Stansted said flights had been delayed by up to three hours
Pipers from the Epping Forest Pipe band entertained travellers at terminal 5 at Heathrow airport today while soldiers helped push the total collected today closer to the target on one million pounds.
The first list showing the quietest and noisiest airlines at Heathrow puts BA short haul at the top and LOT at the bottom.Read the full story ›
Boris Johnson has said the Government must put an end to the uncertaintly over future air capacity in the capital.
Speaking to business leaders, the Mayor insisted further expansion at Heathrow is "politically and environmentally impossible."
Our Political Correspondent Simon Harris reports.