Air France said one of its flights made an unscheduled stop in Germany Wednesday after having to change its planned route due to a partial closure of Kazakh airspace.
The A380 from Shanghai bound for Paris landed at the main airport in the northern German city of Hamburg, said a spokesman for the airline Air France-KLM.
He said the unscheduled landing was a precautionary measure to prevent the aircraft from running out of fuel.
Airspace between Kazakhstan and Kyrgystan on the route was temporarily closed for the launch of a Russian Soyuz spacecraft.
The flight landed in Paris with a delay of more than three hours, the spokesman added.
"Hamburg was a good option because it is an airport the right size to accommodate an A380," he said.
He was unable to say whether other airlines' flights also had to re-route due to the Soyuz launch.