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.
Maropeng is a new exhibition center that focuses on the evolution of the human race and how we have affected the planet. It consists of a boat ride through a series of tunnels portraying volcanoes, icebergs, and other basic elements of the earth and then to the beginning of time and then the present day. It highlights the formation of the continents, man's emergence and evolution, emergence of tec...
Located in the Bankenviertel (financial district), this building is an architectural success and holds the title of tallest building in the European Union. When it was completed in 1997, it was also the tallest building in Europe but was surpassed by the Triumph Palace in Moscow in 2005. With 56 stories and 259 meters, it holds 121,000 square meters of office space for Commerzbank. Address: ...
Chicago's Field Museum of Natural History was founded in 1893 during the Colombian Exhibition. It was moved to its current location in 1921 and is named for Marshall Field, the museum's first benefactor and retail giant Marshall Field. The magnificent Classical Revival building is located along Lakeshore Drive in Chicago's Museum Campus, along with the Shedd Aquarium and the Adler Plan...
The Botanical Gardens were established in 1864 by the French and were once the finest in all of Asia. Tropical plants and trees are a huge attraction here. location: Nguyen Binh Khiem, District 1 Tel: (08) 829 3728. ...