A massive flight backlog was growing and scientists feared that history could repeat itself with yet another volcanic eruption in Iceland.

积压航班数量非常大且呈上升趋势，科学家担心如果冰岛再有火山喷发，这一历史将重演。

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JetBlue pointed to icy conditions and the backlog of stranded passengers and flight crews from Wednesday's cancellations as a major cause of Friday's additional flight cuts.

CNN: JetBlue weather woes not yet overcome

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.

CNN: The airline says it will cut up to 1,200 jobs