Iceland is to close two of its four international airports because of ash from the Eyjafjallajokull volcano.
The national aviation authority says Keflavik and Reykjavik airports will close on Friday.
It is the first time Icelandic airspace has been affected by the eruption, which saw an unprecedented closure of air space in Europe for six days.
Meanwhile, the EU air traffic agency expects European flights to be back to almost 100% soon. Eurocontrol says about 80% of flights took place on Wednesday.
The volcano continues to erupt, but is no longer discharging ash into the atmosphere.
The Icelandic Met Office said "there is much, much, less ash production and the plume is low."