Spokespersons of Air India, Jet Airways and Kingfisher Airlines said they have suspended operations to and from these destinations due to closure of airspace.
Kingfisher spokesperson Prakash Mir Puri said, "In view of continuous restriction over UK airspace and closure of London's Heathrow airport, Kingfisher airlines cancelled its flights from Mumbai and New Delhi to London today."
Air India has rescheduled its long haul flights to Toronto, New York and London till 2 pm on Apr 16.
On Thursday, Apr 15, Jet cancelled two flights from the two Indian metropolises and one from London to Delhi.
Officials have urged passengers to call the airline office to know their flight schedule before proceeding for airports.
Ash clouds from Icelandic volcano continued to hang over European skies on Apr 16, shutting down major airport hubs like Frankfurt, London and Paris for the second day.
The British Air Traffic Control has prohibited aircraft from entering certain parts of airspace over the UK as flying ash can compromise visibility and debris can be sucked into the engines of aircraft.