Thousands of passengers were stranded this morning after authorities grounded flights to and from Europe.
The ash grounded flights for six days, and triggered a deluge of tweets and Facebook posts from stranded travelers asking for help.
Last month, volcanic ash clouds from Iceland grounded flights for six days.
JetBlue says that Bradley was simply overwhelmed by too many diversions, and that its grounded flights were lower priority than bigger international planes.
Liverpool's game at Atletico Madrid and Fulham's trip to Hamburg had been in doubt due to the cloud of volcanic ash from Iceland that has grounded flights.
It started 10 months ago and has taken in 18 matches and nearly 20, 000 miles of travel, including a lengthy trip by coach to Hamburg for the semi-final first leg when the volcanic ash cloud crisis grounded flights in Europe.
JetBlue Airways Corp. had six diverted planes on the ground, and jetBlue officials said all its captains were acutely aware of the tarmac-delay rule, which threatens heavy fines on airlines if they keep passengers on board grounded domestic flights for more than three hours (four hours for international) without offering a chance to deplane, with certain exceptions.
That incident followed one in Los Angeles, California, on Thursday that delayed or grounded hundreds of flights headed to the city.
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Last week it was revealed that aircraft would be grounded and fewer flights made from RAF Lakenheath due to cuts in American defence spending.
This year blizzards on the East Coast grounded thousands of flights Sunday and caused people to stay in, putting a damper on mall activity.
It said 90% of long-haul flights would be operating, but domestic flights would be the worst affected, with more than half of flights grounded.
Earlier this year, dozens of Southwest Airlines planes were found to have missed federal inspections, and American Airlines grounded thousands of flights in order to inspect wiring.
Earlier this year, dozens of Southwest Airlines (nyse: LUV - news - people ) planes were found to have missed federal inspections, and American Airlines (nyse: AMR - news - people ) grounded thousands of flights in order to inspect wiring.
In cases of delays of more than three hours "likely due to heavy winds impairing two of the available runways at JFK, airlines will be forced to return customers to the gate in great number and this will result in thousands of customers grounded with their flights canceled, " said JetBlue spokesman Mateo Lleras via e-mail.
Airlines across the region slashed flights, grounded planes and planned sweeping staff cuts in response.
Striking airline workers, claiming a rise of 9.8%, have grounded scores of Lufthansa flights this week.
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But service is limited, and delays expected after more than 18, 000 flights were grounded during the storm.
Terminal C was locked down and passengers were evacuated from the secure area, while some flights were grounded.
Flights were grounded by the Director General of Civil Aviation (DGCA) on Saturday.
An inquiry has been launched by BAA to look into "what went wrong" at Heathrow Airport as flights were grounded for days following snowfall.
Another 800 tourists stuck in Bangkok had been hoping to go to the island for a holiday, before 50 flights were grounded this week.
Virgin said it would maintain its current flight capacities for several weeks, until it cleared the backlog of passengers stranded while transatlantic flights were grounded last week.
In an illustration of the scale of the problem Mr Hammond said 100, 000 tonnes of snow were cleared from Gatwick airport in the last 24 hours but the flights remained grounded.
Nearly 20, 000 flights were grounded by Sandy.
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Flights have been grounded across the UK and much of Europe since Thursday following the eruption of Icelandic volcano Eyjafjallajokull.
Beyond New York City, public transport has been halted in several eastern US cities, and thousands of flights have been grounded.
Despite later cancelling its flights, the Irish carrier Ryanair claimed it had made a test flight through ash over Scotland and challenged a ruling some flights should be grounded.
As I hopped on, I heard something that made no sense: all flights across the country had been grounded.
The volcano has already caused severe disruption to flights in South America, with planes grounded for several days in Chile, Argentina, Uruguay and Brazil.
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