Germany has grounded air traffic across its northern airspace because of ash from an erupting volcano in Iceland.
Bremen airport was closing at 0300 GMT and Hamburg at 0400 GMT, Germany's weather service said.
The airspace over Berlin and Hanover could also be affected.
Air traffic in Norway and Denmark has been disrupted but flights were expected to resume across the UK after some airspace in the north was closed.
However air traffic is returning to normal in other parts of northern Europe, a day after about 500 flights were cancelled across the region.
On Tuesday, dozens of planes were grounded at UK airports including Glasgow, Edinburgh, Newcastle, Barra, Prestwick, Cumbernauld, Londonderry, Tiree, Carlisle and Durham Tees Valley.
Airports say they are hoping to resume normal services but have warned of possible delays and passengers are advised to check with their airline before travelling.
Tuesday's cancellations came just over a year after another volcanic eruption in Iceland caused widespread disruption across Europe, including the closure of UK airspace, amid concerns about the damage volcanic ash could cause to engine aircraft.
The Grimsvotn volcano in Vatnajokull National Park began erupting on Saturday and closed Iceland's airspace for a period.
Experts say the eruption is on a different scale to the one last year and is producing larger ash particles, which fall to the ground more quickly.
Icelandic government adviser Professor Magnus Tumi Gudmundsson said the eruption from the volcano was slowing down "day by day" and he believed the worst was over.
This Museum has all the contemporary work of Finnish artists and those from neighboring countries. The place also hosts various exhibitions around the year to entertain tourists and to display the cultural and historic side of Finland. The museum building itself is a work of art and is worth a visit on your trip to Helsinki. Entrance fee for adults is 7 Euros while for students it is 5 Euros. Visi...
Named after the artist Matisse, this museum holds a great collection of Matisse's works. Matisse died here in 1954 and most of his works were painted in the city. The most famous painting here is the potrait of Madame Matisse dated 1905. 164 av. des Arènes-de-Cimiez Timings: Wednesday to Monday 10.00 to 18.00 Admission: € 4 adults € 2.50 students Free fo...
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The Children Arts Museum is an excellent destination if you have kids in tow. The museum features children’s art from over 150 countries throughout the world. The museum seeks to promote children’s art worldwide. While you probably won’t be blown away by anything within the museum, your kids might be, and they will gain exposure to numerous cultures and styles of art. Address: Lille Froens ve...