Grounded

European Airlines and Airports are growing frustrated with the continued air ban:

The flight bans came amid fears that the ash - a mixture of glass, sand and rock particles - can seriously damage aircraft engines. Airlines are estimated to be losing some £130m ($200m) a day.
The two airline bodies, ACI Europe and AEA, said: "The eruption of the Icelandic volcano is not an unprecedented event and the procedures applied in other parts of the world for volcanic eruptions do not appear to require the kind of restrictions that are presently being imposed in Europe."

A few airlines have done tests:

Germany's two biggest airlines, Lufthansa and Air Berlin, also said they had carried out test flights without apparent damage, as did Air France.

While the airlines are losing an obscene amount of money because of the flight bans, it's important to keep its passengers safe. Perhaps there should be an independent group that tests the skies. It's about time they started flying again.