British Airways will become the first airline in Europe to allow its customers to use electronic devices in the air.
From tomorrow, British Airways customers will be able to use their tablet devices in 'flight safe' mode from the moment they board the plane.
The airline has demonstrated to the Civil Aviation Authority (CAA) that the changes will comply with all existing safety regulations.
Customers can now use their handheld devices during taxiing, take off and landing.
Air passengers in the South East were facing delays and cancellations due to early morning fog.
Gatwick, Heathrow and London City airports were affected by the poor weather, with British Airlines having to cancel seven flights from Heathrow.
London City airport said, "Due to low visibility this morning, flights to and from London City Airport are experiencing disruptions. Passengers are advised to contact their airlines for more information."
NATS air traffic controllers are working with airlines toclear the backlog of flights following runway closures at Heathrow today.
Controllers at Heathrow airport, as well as airports in the South East, are working out which flights are most important to help contain the situation.
Both runways were closed at Heathrow this morningafter a BA flight to Oslo had engine problems and returned to the airport.
David Johns has our report on the new services from Manston Airport in Kent to Amsterdam. His piece includes an interview with Henri Hourcade, KLM.
Today sees the first KLM flight from Manston in Kent to the Netherlands. Passengers can travel to Amsterdam and from there to many other world-wide destinations.
Air traffic controllers at Swanwick in Hampshire are bracing themselves to cope with an extra 4,000 flights this summer because of the Olympic Games. Airspace will be restricted to private planes, hot air balloons and microlights for a month from July 16.